[lttng-dev] Adding New Tracepoints
Pavan Anumula
pavan.anumula at sasken.com
Mon Jul 2 10:35:58 EDT 2012
Hi ALL,
I am newbie to Tracing mechanism and LTTng usage ,I want to calculate the overhead of LTTng (without using caliberate command), For that I added some trace points to function "timer_interrupt() " inside kernel "arch/arm/mach-davinci/time.c", So that I can calculate time differences by enabling and disabling them.
I followed the Kernel documentation of tracepoints and also declared the tracpoints and defined and registered probefunctions for those trace points.
But I can't see my new trace points when I give the command "arm-none-linux-gnueabi-lttng list -k". Can we add our own new trace points so that it will call probe function which I define?? If so please let me know the procedure in order to use them for LTTng overhead measurement.
Also let me know the procedure for enabling and disabling newly added tracepoints in LTTng.
I am using.
Lttng modules 2.0.2
Lttng tools:2.0.1
Kernel:2.6.33.7 with RT-29 patch.
Thanks In Advance,
Pavan
-----Original Message-----
From: Pavan Anumula
Sent: Thursday, June 21, 2012 8:54 PM
To: 'David Goulet'
Cc: lttng-dev at lists.lttng.org; Mathieu Desnoyers (mathieu.desnoyers at efficios.com)
Subject: RE: [lttng-dev] Empty traces for UST
Hi David,
We tried to debug lttng commands with gdbserver on the arm target from host gdb remote target session following were obersevations:
1. create Session
gdbserver --remote-debug localhost:5560 arm-none-linux-gnueabi-lttng -vvv create sesAA
>>passed with out and errors
2. Enable events for session
gdbserver --remote-debug localhost:5560 arm-none-linux-gnueabi-lttng -vvv enable-event -u -a
>> failed randomly with segment faults and memeory allocation error see
>> below trace error
>>> (gdb) n
>>>312 goto error;
>>> (gdb) n
>>>318 handle = lttng_create_handle(session_name, &dom);
>>> (gdb) s
>>>lttng_create_handle (session_name=0x40015154 "", domain=0xbe810bbc) at lttng-ctl.c:395
>>>395 perror("malloc handle");
Some times it used to print:
>>>/lib/ld-linux.so.3: No such file or directory
Or
Segment faults
Here is the /proc/meminfo of device:
root at arago:~# cat /proc/meminfo
MemTotal: 28220 kB
MemFree: 12704 kB
Buffers: 0 kB
Cached: 7520 kB
SwapCached: 0 kB
Active: 4804 kB
Inactive: 4984 kB
Active(anon): 2296 kB
Inactive(anon): 84 kB
Active(file): 2508 kB
Inactive(file): 4900 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 2296 kB
Mapped: 2000 kB
Shmem: 112 kB
Slab: 3188 kB
SReclaimable: 808 kB
SUnreclaim: 2380 kB
KernelStack: 576 kB
PageTables: 288 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 14108 kB
Committed_AS: 47704 kB
VmallocTotal: 985088 kB
VmallocUsed: 400 kB
VmallocChunk: 984612 kB
Please suggest how to overcome this issue.
Regards,
Pavan
-----Original Message-----
From: David Goulet [mailto:dgoulet at efficios.com]
Sent: Friday, June 15, 2012 8:28 PM
To: Pavan Anumula
Cc: lttng-dev at lists.lttng.org
Subject: Re: [lttng-dev] Empty traces for UST
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi Pavan,
Glad for the kernel! :)
For UST, I'll recommend you start a session daemon like so "lttng-sessiond
- -vvv". After that, use the lttng-ust/tests/hello program and execute it. You should see on the debug output of the session daemon that the application "hello" has registered and is ready for tracing.
Your output below does NOT show those debug messages so it would be a good start to see if there is a problem at that point. Also, make sure that the liblttng-ust is installed upon compiling lttng-tools so that the user space tracer support is enabled in the tools.
Thanks!
David
On 15/06/12 10:50 AM, Pavan Anumula wrote:
> Hi David,
>
> Finally I was able to get kernel traces by referring to one of your
> other posts , Actually lttng-consumerd binary was actually not
> present at the needed path, Thanks for your help.
>
> And sorry for bugging you with mails :) .
>
>
> But this time I am facing issues at UST tracing . Please kindly help
> me on this.
>
> When I try to trace for User space it is creating an empty folder with
> no traces on ARM target, I tried with all the sample trace programs in
> LTTng-UST/tests folder.
>
> I am using NFS to load binaries and for tracing will that causes problem.
> Please also find the debug logs attached,
>
> Please also let me know if you want some more information.
>
>
> ************************************** fcntl64(12, F_SETFD, FD_CLOEXEC)
> = 0 fcntl64(13, F_SETFD, FD_CLOEXEC) = 0 pipe([14, 15])
> = 0 fcntl64(14, F_SETFD, FD_CLOEXEC) = 0 fcntl64(15, F_SETFD,
> FD_CLOEXEC) = 0 getrlimit(RLIMIT_NOFILE, {rlim_cur=65535,
> rlim_max=65535}) = 0 write(2, "DEBUG1: poll set max size set to"...,
> 92DEBUG1: poll set max size set to 65535 [in
> compat_poll_set_max_size() at compat-poll.c:196] ) = 92 mmap2(NULL,
> 8388608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4024b000 mprotect(0x4024b000, 4096,
> PROT_NONE) = 0 clone(child_stack=0x40a49ef8,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_S
> YSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x40a4a3e8, tls=0x40a4a840, child_tidptr=0x40a4a3e8) =
> 921 mmap2(NULL, 8388608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x40a4b000 mprotect(0x40a4b000, 4096, PROT_NONE) = 0
> clone(child_stack=0x41249ef8,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_S
> YSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x4124a3e8, tls=0x4124a840, child_tidptr=0x4124a3e8) =
> 922 mmap2(NULL, 8388608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x4124b000 mprotect(0x4124b000, 4096, PROT_NONE) = 0
> clone(child_stack=0x41a49ef8,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_S
> YSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x41a4a3e8, tls=0x41a4a840, child_tidptr=0x41a4a3e8) =
> 923 mmap2(NULL, 8388608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x41a4b000 mprotect(0x41a4b000, 4096, PROT_NONE) = 0 clone(DEBUG1:
> [thread] Dispatch UST command started [in
> thread_dispatch_ust_registration() at main.c:1324] DEBUG1: Futex n to
> 1 prepare done [in futex_nto1_prepare() at futex.c:73] DEBUG1: Woken
> up but nothing in the UST command queue [in
> thread_dispatch_ust_registration() at main.c:1334] DEBUG1: [thread]
> Manage application registration started [in
> thread_registration_apps() at main.c:1392] DEBUG1: fd 3 of 1 added to
> pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 11 of 2
> added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
> Notifying applications of session daemon state: 1 [in
> notify_ust_apps() at main.c:687] DEBUG1: Got the wait shm fd 16 [in
> get_wait_shm() at shm.c:117] DEBUG1: Futex wait update active 1 [in
> futex_wait_update() at futex.c:62] DEBUG1: Accepting application
> registration [in
> thread_registration_apps() at main.c:1423] DEBUG1: [thread] Manage
> application started [in thread_manage_apps() at main.c:1179] DEBUG1:
> fd 3 of 1 added to pollfd [in compat_poll_add() at compat-poll.c:91]
> DEBUG1: fd
> 14 of 2 added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
> Apps thread polling on 2 fds [in thread_manage_apps() at main.c:1200]
> DEBUG1: [thread] Manage client started [in thread_manage_clients() at
> main.c:3794] DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add()
> at compat-poll.c:91] DEBUG1: fd 10 of 2 added to pollfd [in
> compat_poll_add() at compat-poll.c:91] DEBUG1: Accepting client
> command ... [in
> thread_manage_clients() at main.c:3826] child_stack=0x42249ef8,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_S
> YSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x4224a3e8, tls=0x4224a840, child_tidptr=0x4224a3e8) =
> 924 mmap2(NULL, 8388608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x4224b000 mprotect(0x4224b000, 4096, PROT_NONE) = 0
> clone(child_stack=0x42a49ef8,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_S
> YSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x42a4a3e8, tls=0x42a4a840, child_tidptr=0x42a4a3e8) =
> 925 futex(0x42a4a3e8, FUTEX_WAIT, 925, NULLDEBUG1: Thread manage
> kernel started [in thread_manage_kernel() at main.c:876] DEBUG1: fd 3
> of 1 added to pollfd [in compat_poll_add() at compat-poll.c:91]
> DEBUG1: fd 12 of 2 added to pollfd [in compat_poll_add() at
> compat-poll.c:91] DEBUG1: Updating kernel poll set [in
> update_kernel_poll() at main.c:748] DEBUG1: Thread kernel polling on 2
> fds [in thread_manage_kernel() at main.c:905] DEBUG1: Wait for client response [in thread_manage_clients() at main.c:3863] DEBUG1:
> Receiving data from client ... [in thread_manage_clients() at
> main.c:3898]
> DEBUG1: Nothing recv() from client... continuing [in
> thread_manage_clients() at main.c:3902] DEBUG1: Clean command context
> structure [in clean_command_ctx() at main.c:534] DEBUG1: Accepting
> client command ... [in thread_manage_clients() at main.c:3826] DEBUG1:
> Wait for client response [in thread_manage_clients() at main.c:3863] DEBUG1:
> Receiving data from client ... [in thread_manage_clients() at
> main.c:3898]
> DEBUG1: Processing client command 8 [in process_client_msg() at
> main.c:3309] DEBUG2: Trying to find session by name sesCCC [in
> session_find_by_name() at session.c:126] DEBUG3: mkdir() recursive
> /home/root/lttng-traces/sesCCC-20110327-045731 with mode 504 for uid 0
> and gid 0 [in run_as_mkdir_recursive() at runas.c:338] DEBUG1: Using
> run_as_clone [in run_as() at runas.c:322] DEBUG1: Tracing session
> sesCCC created in /home/root/lttng-traces/sesCCC-20110327-045731 with
> ID 1 by UID
> 0 GID 0 [in session_create() at session.c:234] DEBUG1: Sending
> response
> (size: 16, retcode: Success) [in thread_manage_clients() at
> main.c:3936]
> DEBUG1: Clean command context structure [in clean_command_ctx() at
> main.c:534] DEBUG1: Accepting client command ... [in
> thread_manage_clients() at main.c:3826] DEBUG1: Wait for client
> response [in thread_manage_clients() at main.c:3863] DEBUG1: Receiving
> data from client ... [in thread_manage_clients() at main.c:3898]
> DEBUG1: Nothing
> recv() from client... continuing [in thread_manage_clients() at
> main.c:3902] DEBUG1: Clean command context structure [in
> clean_command_ctx() at main.c:534] DEBUG1: Accepting client command
> ... [in
> thread_manage_clients() at main.c:3826] DEBUG1: Wait for client
> response [in thread_manage_clients() at main.c:3863] DEBUG1: Receiving
> data from client ... [in thread_manage_clients() at main.c:3898]
> DEBUG1: Processing client command 6 [in process_client_msg() at
> main.c:3309] DEBUG1: Getting session sesCCC by name [in process_client_msg() at main.c:3364] DEBUG2:
> Trying to find session by name sesCCC [in session_find_by_name() at
> session.c:126] DEBUG1: Creating UST session [in create_ust_session()
> at main.c:1965] DEBUG3: Created hashtable size 4 at 0x4fa08 of type 1
> [in
> lttng_ht_new() at hashtable.c:96] DEBUG3: Created hashtable size 4 at
> 0x4fb28 of type 1 [in lttng_ht_new() at hashtable.c:96] DEBUG3:
> Created hashtable size 4 at 0x4fc48 of type 0 [in lttng_ht_new() at
> hashtable.c:96] DEBUG2: UST trace session create successful [in
> trace_ust_create_session() at trace-ust.c:119] DEBUG3: mkdir()
> recursive /home/root/lttng-traces/sesCCC-20110327-045731/ust with mode
> 504 for uid 0 and gid 0 [in run_as_mkdir_recursive() at runas.c:338]
> DEBUG1: Using run_as_clone [in run_as() at runas.c:322] DEBUG1:
> Spawning consumerd [in
> spawn_consumerd() at main.c:1659] DEBUG1: Using 32-bit UST consumer at:
> /root/armfilesystem/lib/lttng/libexec/lttng-consumerd [in
> spawn_consumerd() at main.c:1777] DEBUG2: Consumer pid 934 [in
> start_consumerd() at main.c:1830] DEBUG2: Spawning consumer control
> thread [in start_consumerd() at main.c:1833] DEBUG1: [thread] Manage
> consumer started [in
> thread_manage_consumer() at main.c:982] DEBUG1: fd 3 of 1 added to
> pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 9 of 2
> added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG2:
> Receiving code from consumer err_sock [in thread_manage_consumer() at main.c:1043] DEBUG1:
> consumer command socket ready [in thread_manage_consumer() at
> main.c:1062]
> DEBUG1: fd 17 of 2 added to pollfd [in compat_poll_add() at
> compat-poll.c:91] DEBUG2: Trace UST channel channel0 not found by name
> [in
> trace_ust_find_channel_by_name() at trace-ust.c:52] DEBUG3: Created
> hashtable size 4 at 0x51310 of type 0 [in lttng_ht_new() at
> hashtable.c:96] DEBUG3: Created hashtable size 4 at 0x51430 of type 1
> [in
> lttng_ht_new() at hashtable.c:96] DEBUG2: Trace UST channel channel0
> created [in trace_ust_create_channel() at trace-ust.c:181] DEBUG2:
> Channel
> channel0 being created in UST global domain [in channel_ust_create()
> at channel.c:267] DEBUG2: UST app adding channel channel0 to global
> domain for session id 1 [in ust_app_create_channel_glb() at ust-app.c:1792] DEBUG2:
> Channel channel0 created successfully [in channel_ust_create() at
> channel.c:292] DEBUG2: Trace UST channel channel0 found by name [in
> trace_ust_find_channel_by_name() at trace-ust.c:47] DEBUG2: Trace UST
> event NOT found by name * [in trace_ust_find_event_by_name() at
> trace-ust.c:79]
> DEBUG3: Created hashtable size 4 at 0x51550 of type 1 [in
> lttng_ht_new() at hashtable.c:96] DEBUG2: Trace UST event *, loglevel
> (0,-1) created [in
> trace_ust_create_event() at trace-ust.c:260] DEBUG1: UST app creating
> event
> * for all apps for session id 1 [in ust_app_create_event_glb() at
> ust-app.c:1916] DEBUG1: Event UST * created in channel channel0 [in
> event_ust_enable_tracepoint() at event.c:446] DEBUG1: Sending response
> (size: 16, retcode: Success) [in thread_manage_clients() at
> main.c:3936]
> DEBUG1: Clean command context structure [in clean_command_ctx() at
> main.c:534] DEBUG1: Accepting client command ... [in
> thread_manage_clients() at main.c:3826] DEBUG1: Wait for client
> response [in thread_manage_clients() at main.c:3863] DEBUG1: Receiving
> data from client ... [in thread_manage_clients() at main.c:3898]
> DEBUG1: Nothing
> recv() from client... continuing [in thread_manage_clients() at
> main.c:3902] DEBUG1: Clean command context structure [in
> clean_command_ctx() at main.c:534] DEBUG1: Accepting client command
> ... [in
> thread_manage_clients() at main.c:3826] DEBUG1: Wait for client
> response [in thread_manage_clients() at main.c:3863] DEBUG1: Receiving
> data from client ... [in thread_manage_clients() at main.c:3898]
> DEBUG1: Processing client command 16 [in process_client_msg() at
> main.c:3309] DEBUG1: Getting session sesCCC by name [in process_client_msg() at main.c:3364] DEBUG2:
> Trying to find session by name sesCCC [in session_find_by_name() at
> session.c:126] DEBUG1: Starting all UST traces [in
> ust_app_start_trace_all() at ust-app.c:2207] DEBUG1: Sending response
> (size: 16, retcode: Success) [in thread_manage_clients() at
> main.c:3936]
> DEBUG1: Clean command context structure [in clean_command_ctx() at
> main.c:534] DEBUG1: Accepting client command ... [in
> thread_manage_clients() at main.c:3826]
> ************************************************
>
>
>
>
>
> Thanks in Advance, Pavan
>
>
> -----Original Message----- From: David Goulet
> [mailto:dgoulet at efficios.com] Sent: Tuesday, June 12, 2012 9:05 PM To:
> Pavan Anumula Cc: lttng-dev at lists.lttng.org Subject: Re: [lttng-dev]
> Lttng start failed
>
> Hi Pavan,
>
> The output below is normal and should be working fine. However, the
> problem is that you have _NO_ debug message after the "lttng start".
> That command should at least produce 10+ lines of messages after this last line:
>
> "DEBUG1: Accepting application registration [in
> thread_registration_apps() at main.c:1423]"
>
> Can you enlight me and tell me if by doing "lttng create newsessiom"
> and "lttng enable-event -a -k", you have output messages coming out of
> the session daemon in -vvv mode ?
>
> If NOT, you are talking to another daemon! A quick "ps faux | grep
> lttng-sessiond" could help clear that question.
>
> If only one daemon is running and stuck at the above debug message,
> the next step is to tell me on what the daemon is waiting on using
> either "strace -p" or "gdb" also. There is 6 threads so having the
> strace -p output for all of them would help me greatly.
>
> Thanks! David
>
> On 12/06/12 10:05 AM, Mathieu Desnoyers wrote:
>> * Pavan Anumula (pavan.anumula at sasken.com) wrote:
>>> Hi Mathieu, Still I am unable to start tracing, And I am facing the
>>> same start errors. Please kindly help me on this. This time I
>>> loaded the modules by modprobe( not with insmod as I did before),
>>> Then I run the command " arm-none-linux-gnueabi-lttng-sessiond
>>> -vvv " (before arm-none-linux-gnueabi-lttng-sessiond -d),
>
>> When using "arm-none-linux-gnueabi-lttng-sessiond -vvv", you should
>> _not_ run "arm-none-linux-gnueabi-lttng-sessiond -d".
>
>
>>> The below is the Output, And It got hanged overthere.
>
>> This is normal: the sessiond is waiting for applications to connect.
>> It does not hang, it just waits.
>
>> David, can you follow up on this issue ? It seems to be
>> sessiond-related.
>
>> Thanks,
>
>> Mathieu
>
>
>>> Later when I started lttng start I am acing the same erros below:
>>> root at arago:~/lttng-traces# arm-none-linux-gnueabi-lttng start LTTng:
>>> Failure to write metadata to buffers (timeout) Error: Starting
>>> kernel trace failed
>>>
>>> ********************************************************************
>>> *
>>> ***************************
>>>
>>>
> DEBUG3: Creating LTTng run directory: /var/run/lttng [in
> create_lttng_rundir() at main.c:4315]
>>> DEBUG2: Kernel consumer err path: /var/run/lttng/kconsumerd/error
>>> [in
>>> main() at main.c:4543] DEBUG2: Kernel consumer cmd path:
>>> /var/run/lttng/kconsumerd/command [in main() at main.c:4545] DEBUG1:
>>> Client socket path /var/run/lttng/client-lttng-sessiond [in main()
>>> at main.c:4592] DEBUG1: Application socket path
>>> /var/run/lttng/apps-lttng-sessiond [in main() at main.c:4593] DEBUG1:
>>> LTTng run directory path: /var/run/lttng [in main() at main.c:4594]
>>> DEBUG2: UST consumer 32 bits err path:
>>> /var/run/lttng/ustconsumerd32/error [in main() at main.c:4603] DEBUG2:
>>> UST consumer 32 bits cmd path: /var/run/lttng/ustconsumerd32/command
>>> [in main() at main.c:4605] DEBUG2: UST consumer 64 bits err path:
>>> /var/run/lttng/ustconsumerd64/error [in main() at main.c:4614] DEBUG2:
>>> UST consumer 64 bits cmd path: /var/run/lttng/ustconsumerd64/command
>>> [in main() at main.c:4616] DEBUG3: Created hashtable size 4 at
>>> 0x4a080 of type 1 [in lttng_ht_new() at hashtable.c:96] DEBUG3:
>>> Created hashtable size 4 at 0x4a168 of type 1 [in lttng_ht_new() at
>>> hashtable.c:96] DEBUG2: Creating consumer directory:
>>> /var/run/lttng/kconsumerd [in set_consumer_sockets() at main.c:4357]
>>> DEBUG1: Modprobe successfully lttng-tracer [in
>>> modprobe_lttng_control() at modprobe.c:163] DEBUG2: Kernel tracer
>>> version validated (major version 2) [in kernel_validate_version() at kernel.c:675] DEBUG1:
>>> Modprobe successfully lttng-ftrace [in modprobe_lttng_data() at
>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-kprobes [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-kretprobes [in modprobe_lttng_data() at modprobe.c:199] DEBUG1:
>>> Modprobe successfully lttng-lib-ring-buffer [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-client-discard [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-client-overwrite [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-metadata-client [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-client-mmap-discard [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-client-mmap-overwrite [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-ring-buffer-metadata-mmap-client [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-probe-lttng [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-types [in modprobe_lttng_data() at modprobe.c:199] DEBUG1:
>>> Modprobe successfully lttng-probe-block [in modprobe_lttng_data() at
>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-irq [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-probe-kvm [in modprobe_lttng_data() at modprobe.c:199] DEBUG1:
>>> Modprobe successfully lttng-probe-sched [in modprobe_lttng_data() at
>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-signal [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>> successfully lttng-probe-statedump [in modprobe_lttng_data() at
>>> modprobe.c:199]
>>> DEBUG1: Modprobe successfully lttng-probe-timer [in
>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Kernel tracer fd 6
>>> [in
>>> init_kernel_tracer() at main.c:1887] DEBUG2: Creating consumer
>>> directory: /var/run/lttng/ustconsumerd64 [in set_consumer_sockets()
>>> at main.c:4357] DEBUG2: Creating consumer directory:
>>> /var/run/lttng/ustconsumerd32 [in set_consumer_sockets() at
>>> main.c:4357] DEBUG1: Signal handler set for SIGTERM, SIGPIPE and
>>> SIGINT [in set_signal_handler() at main.c:4449] DEBUG1: All
>>> permissions are set [in set_permissions() at main.c:4250] DEBUG1:
>>> poll set max size set to 65535 [in compat_poll_set_max_size() at compat-poll.c:196] DEBUG1:
>>> [thread] Manage application started [in thread_manage_apps() at
>>> main.c:1179] DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add()
>>> at compat-poll.c:91] DEBUG1: fd 13 of 2 added to pollfd [in
>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Apps thread polling
>>> on 2 fds [in thread_manage_apps() at main.c:1200] DEBUG1: Thread
>>> manage kernel started [in thread_manage_kernel() at main.c:876]
>>> DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>> fd 11 of 2 added to pollfd [in compat_poll_add() at
>>> compat-poll.c:91]
>>> DEBUG1: Updating kernel poll set [in update_kernel_poll() at
>>> main.c:748] DEBUG1: Thread kernel polling on 2 fds [in
>>> thread_manage_kernel() at main.c:905] DEBUG1: [thread] Manage
>>> application registration started [in thread_registration_apps() at
>>> main.c:1392] DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add()
>>> at compat-poll.c:91] DEBUG1: fd 10 of 2 added to pollfd [in
>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Notifying
>>> applications of session daemon state: 1 [in notify_ust_apps() at
>>> main.c:687]
>>> DEBUG1: [thread] Dispatch UST command started [in
>>> thread_dispatch_ust_registration() at main.c:1324] DEBUG1: Futex n
>>> to 1 prepare done [in futex_nto1_prepare() at futex.c:73] DEBUG1:
>>> Woken up but nothing in the UST command queue [in
>>> thread_dispatch_ust_registration() at main.c:1334] DEBUG1: [thread]
>>> Manage client started [in thread_manage_clients() at main.c:3794]
>>> DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add() at
>>> compat-poll.c:91] DEBUG1: fd 9 of 2 added to pollfd [in
>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Accepting client
>>> command ... [in thread_manage_clients() at main.c:3826] DEBUG1: Got
>>> the wait shm fd 15 [in get_wait_shm() at shm.c:117] DEBUG1: Futex
>>> wait update active 1 [in futex_wait_update() at futex.c:62] DEBUG1:
>>> Accepting application registration [in thread_registration_apps() at
>>> main.c:1423]
>>> ********************************************************************
>>> *
>>> ***********************************
>>>
>>>
> Am I missing anything??
>>>
>>> Thanks in Advance, Pavan
>>>
>>>
>>> ________________________________________ From: Mathieu Desnoyers
>>> [mathieu.desnoyers at efficios.com] Sent: Monday, June 11, 2012 7:24 PM
>>> To: Pavan Anumula Cc: lttng-dev at lists.lttng.org Subject: Re:
>>> [lttng-dev] Lttng start failed
>>>
>>> * Pavan Anumula (pavan.anumula at sasken.com) wrote:
>>>> Hi Mathieu,
>>>>
>>>> Please find the info below as per your comments
>>>>
>>>>
>>>> ########## Output of command
>>>> "arm-none-linux-gnueabi-lttng-sessiond
>>>> -vvv " , After loading the modules #######
>>>>
>>>> DEBUG3: Creating LTTng run directory: /var/run/lttng [in
>>>> create_lttng_rundir() at main.c:4315] DEBUG2: Kernel consumer err
>>>> path: /var/run/lttng/kconsumerd/error [in main() at main.c:4543]
>>>> DEBUG2: Kernel consumer cmd path: /var/run/lttng/kconsumerd/command
>>>> [in main() at main.c:4545] DEBUG1: Client socket path
>>>> /var/run/lttng/client-lttng-sessiond [in main() at main.c:4592]
>>>> DEBUG1: Application socket path /var/run/lttng/apps-lttng-sessiond
>>>> [in main() at main.c:4593] DEBUG1: LTTng run directory path:
>>>> /var/run/lttng [in main() at main.c:4594] DEBUG2: UST consumer 32
>>>> bits err path: /var/run/lttng/ustconsumerd32/error [in main() at
>>>> main.c:4603] DEBUG2: UST consumer 32 bits cmd path:
>>>> /var/run/lttng/ustconsumerd32/command [in main() at main.c:4605]
>>>> DEBUG2: UST consumer 64 bits err path:
>>>> /var/run/lttng/ustconsumerd64/error [in main() at main.c:4614]
>>>> DEBUG2: UST consumer 64 bits cmd path:
>>>> /var/run/lttng/ustconsumerd64/command [in main() at main.c:4616]
>>>> DEBUG3: Created hashtable size 4 at 0x4a080 of type 1 [in
>>>> lttng_ht_new() at hashtable.c:96] DEBUG3: Created hashtable size 4
>>>> at
>>>> 0x4a168 of type 1 [in lttng_ht_new() at hashtable.c:96] DEBUG2:
>>>> Creating consumer directory: /var/run/lttng/kconsumerd [in
>>>> set_consumer_sockets() at main.c:4357] FATAL: Module lttng_tracer
>>>> not found. Error: Unable to load module lttng-tracer
>>>
>>> Hrm. You want to do kernel tracing, but modprobe cannot find the
>>> lttng kernel tracer modules. You might want to run depmod -a or
>>> something like that on your target, and ensure that modprobe works properly.
>>>
>>> Thanks,
>>>
>>> Mathieu
>>>
>>>> DEBUG2: Kernel tracer version validated (major version 2) [in
>>>> kernel_validate_version() at kernel.c:675] DEBUG1: Modprobe
>>>> successfully lttng-ftrace [in modprobe_lttng_data() at
>>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-kprobes [in
>>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>>> successfully lttng-kretprobes [in modprobe_lttng_data() at
>>>> modprobe.c:199] FATAL: Module lttng_lib_ring_buffer not found. Error:
>>>> Unable to load module lttng-lib-ring-buffer FATAL: Module
>>>> lttng_ring_buffer_client_discard not found. Error: Unable to load
>>>> module lttng-ring-buffer-client-discard FATAL: Module
>>>> lttng_ring_buffer_client_overwrite not found. Error: Unable to load
>>>> module lttng-ring-buffer-client-overwrite FATAL: Module
>>>> lttng_ring_buffer_metadata_client not found. Error: Unable to load
>>>> module lttng-ring-buffer-metadata-client FATAL: Module
>>>> lttng_ring_buffer_client_mmap_discard not found. Error: Unable to
>>>> load module lttng-ring-buffer-client-mmap-discard FATAL: Module
>>>> lttng_ring_buffer_client_mmap_overwrite not found. Error: Unable to
>>>> load module lttng-ring-buffer-client-mmap-overwrite FATAL: Module
>>>> lttng_ring_buffer_metadata_mmap_client not found. Error: Unable to
>>>> load module lttng-ring-buffer-metadata-mmap-client FATAL: Module
>>>> lttng_probe_lttng not found. Error: Unable to load module
>>>> lttng-probe-lttng DEBUG1: Modprobe successfully lttng-types [in
>>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>>> successfully lttng-probe-block [in modprobe_lttng_data() at
>>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-irq [in
>>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>>> successfully lttng-probe-kvm [in modprobe_lttng_data() at
>>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-sched [in
>>>> modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>>> successfully lttng-probe-signal [in modprobe_lttng_data() at
>>>> modprobe.c:199] DEBUG1: Modprobe successfully lttng-probe-statedump
>>>> [in modprobe_lttng_data() at modprobe.c:199] DEBUG1: Modprobe
>>>> successfully lttng-probe-timer [in modprobe_lttng_data() at
>>>> modprobe.c:199] DEBUG1: Kernel tracer fd 6 [in init_kernel_tracer()
>>>> at main.c:1887] DEBUG2: Creating consumer directory:
>>>> /var/run/lttng/ustconsumerd64 [in set_consumer_sockets() at
>>>> main.c:4357] DEBUG2: Creating consumer directory:
>>>> /var/run/lttng/ustconsumerd32 [in set_consumer_sockets() at
>>>> main.c:4357] DEBUG1: Signal handler set for SIGTERM, SIGPIPE and
>>>> SIGINT [in set_signal_handler() at main.c:4449] DEBUG1: All
>>>> permissions are set [in set_permissions() at main.c:4250] DEBUG1:
>>>> poll set max size set to 65535 [in compat_poll_set_max_size() at
>>>> compat-poll.c:196] DEBUG1: [thread] Manage client started [in
>>>> thread_manage_clients() at main.c:3794] DEBUG1: fd 3 of 1 added to
>>>> pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 9 of 2
>>>> added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>>> Accepting client command ... [in thread_manage_clients() at
>>>> main.c:3826] DEBUG1: [thread] Dispatch UST command started [in
>>>> thread_dispatch_ust_registration() at main.c:1324] DEBUG1: Futex n
>>>> to
>>>> 1 prepare done [in futex_nto1_prepare() at futex.c:73] DEBUG1:
>>>> Woken up but nothing in the UST command queue [in
>>>> thread_dispatch_ust_registration() at main.c:1334] DEBUG1: Thread
>>>> manage kernel started [in thread_manage_kernel() at main.c:876]
>>>> DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add() at
>>>> compat-poll.c:91] DEBUG1: fd 11 of 2 added to pollfd [in
>>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Updating kernel poll
>>>> set [in update_kernel_poll() at main.c:748] DEBUG1: Thread kernel
>>>> polling on 2 fds [in thread_manage_kernel() at main.c:905] DEBUG1:
>>>> [thread] Manage application started [in thread_manage_apps() at
>>>> main.c:1179] DEBUG1: fd 3 of 1 added to pollfd [in
>>>> compat_poll_add() at compat-poll.c:91] DEBUG1: fd 13 of 2 added to
>>>> pollfd [in
>>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Apps thread polling
>>>> on
>>>> 2 fds [in thread_manage_apps() at main.c:1200] DEBUG1: [thread]
>>>> Manage application registration started [in
>>>> thread_registration_apps() at main.c:1392] DEBUG1: fd 3 of 1 added
>>>> to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 10
>>>> of 2 added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>>> Notifying applications of session daemon state: 1 [in
>>>> notify_ust_apps() at main.c:687] DEBUG1: Got the wait shm fd 15 [in
>>>> get_wait_shm() at shm.c:117] DEBUG1: Futex wait update active 1 [in
>>>> futex_wait_update() at futex.c:62] DEBUG1: Accepting application
>>>> registration [in thread_registration_apps() at main.c:1423]
>>>>
>>>>
>>>>
>>>> #### Output of command "arm-none-linux-gnueabi-lttng-sessiond -vvv
>>>> " before loading the modules #############
>>>>
>>>> DEBUG3: Creating LTTng run directory: /var/run/lttng [in
>>>> create_lttng_rundir() at main.c:4315] DEBUG2: Kernel consumer err
>>>> path: /var/run/lttng/kconsumerd/error [in main() at main.c:4543]
>>>> DEBUG2: Kernel consumer cmd path: /var/run/lttng/kconsumerd/command
>>>> [in main() at main.c:4545] DEBUG1: Client socket path
>>>> /var/run/lttng/client-lttng-sessiond [in main() at main.c:4592]
>>>> DEBUG1: Application socket path /var/run/lttng/apps-lttng-sessiond
>>>> [in main() at main.c:4593] DEBUG1: LTTng run directory path:
>>>> /var/run/lttng [in main() at main.c:4594] DEBUG2: UST consumer 32
>>>> bits err path: /var/run/lttng/ustconsumerd32/error [in main() at
>>>> main.c:4603] DEBUG2: UST consumer 32 bits cmd path:
>>>> /var/run/lttng/ustconsumerd32/command [in main() at main.c:4605]
>>>> DEBUG2: UST consumer 64 bits err path:
>>>> /var/run/lttng/ustconsumerd64/error [in main() at main.c:4614]
>>>> DEBUG2: UST consumer 64 bits cmd path:
>>>> /var/run/lttng/ustconsumerd64/command [in main() at main.c:4616]
>>>> DEBUG3: Created hashtable size 4 at 0x4a080 of type 1 [in
>>>> lttng_ht_new() at hashtable.c:96] DEBUG3: Created hashtable size 4
>>>> at
>>>> 0x4a168 of type 1 [in lttng_ht_new() at hashtable.c:96] DEBUG2:
>>>> Creating consumer directory: /var/run/lttng/kconsumerd [in
>>>> set_consumer_sockets() at main.c:4357] FATAL: Module lttng_tracer
>>>> not found. Error: Unable to load module lttng-tracer DEBUG1: Failed
>>>> to open /proc/lttng [in init_kernel_tracer() at main.c:1871] Error:
>>>> Unable to remove module lttng-tracer Warning: No kernel tracer
>>>> available DEBUG2: Creating consumer directory:
>>>> /var/run/lttng/ustconsumerd64 [in set_consumer_sockets() at
>>>> main.c:4357] DEBUG2: Creating consumer directory:
>>>> /var/run/lttng/ustconsumerd32 [in set_consumer_sockets() at
>>>> main.c:4357] DEBUG1: Signal handler set for SIGTERM, SIGPIPE and
>>>> SIGINT [in set_signal_handler() at main.c:4449] DEBUG1: All
>>>> permissions are set [in set_permissions() at main.c:4250] DEBUG1:
>>>> poll set max size set to 65535 [in compat_poll_set_max_size() at
>>>> compat-poll.c:196] DEBUG1: [thread] Manage application started [in
>>>> thread_manage_apps() at main.c:1179] DEBUG1: fd 3 of 1 added to
>>>> pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 12 of
>>>> 2 added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>>> Apps thread polling on 2 fds [in thread_manage_apps() at
>>>> main.c:1200]
>>>> DEBUG1: Thread manage kernel started [in thread_manage_kernel() at
>>>> main.c:876] DEBUG1: fd 3 of 1 added to pollfd [in compat_poll_add()
>>>> at compat-poll.c:91] DEBUG1: fd 10 of 2 added to pollfd [in
>>>> compat_poll_add() at compat-poll.c:91] DEBUG1: Updating kernel poll
>>>> set [in update_kernel_poll() at main.c:748] DEBUG1: Thread kernel
>>>> polling on 2 fds [in thread_manage_kernel() at main.c:905] DEBUG1:
>>>> [thread] Manage application registration started [in
>>>> thread_registration_apps() at main.c:1392] DEBUG1: fd 3 of 1 added
>>>> to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 9
>>>> of 2 added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>>> Notifying applications of session daemon state: 1 [in
>>>> notify_ust_apps() at main.c:687] DEBUG1: [thread] Dispatch UST
>>>> command started [in thread_dispatch_ust_registration() at
>>>> main.c:1324] DEBUG1: Futex n to 1 prepare done [in
>>>> futex_nto1_prepare() at futex.c:73] DEBUG1: Woken up but nothing in
>>>> the UST command queue [in thread_dispatch_ust_registration() at
>>>> main.c:1334] DEBUG1: [thread] Manage client started [in
>>>> thread_manage_clients() at main.c:3794] DEBUG1: fd 3 of 1 added to
>>>> pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1: fd 8 of 2
>>>> added to pollfd [in compat_poll_add() at compat-poll.c:91] DEBUG1:
>>>> Accepting client command ... [in thread_manage_clients() at
>>>> main.c:3826] DEBUG1: Got the wait shm fd 14 [in get_wait_shm() at
>>>> shm.c:117] DEBUG1: Futex wait update active 1 [in
>>>> futex_wait_update() at futex.c:62] DEBUG1: Accepting application
>>>> registration [in
>>>> thread_registration_apps() at main.c:1423]
>>>>
>>>>
>>>> Regards, Pavan
>>>>
>>>> -----Original Message----- From: Mathieu Desnoyers
>>>> [mailto:mathieu.desnoyers at efficios.com] Sent: Saturday, June 09,
>>>> 2012 6:03 PM To: Pavan Anumula Cc: lttng-dev at lists.lttng.org Subject:
>>>> Re: [lttng-dev] Lttng start failed
>>>>
>>>> * Pavan Anumula (pavan.anumula at sasken.com) wrote:
>>>>> Hi Mathue,
>>>>>
>>>>> Thanks for the quick reply,
>>>>>
>>>>> After inserting lttng modules , I had given the command
>>>>> "arm-none-linux-gnueabi-lttng-sessiond -vvv" as you said, Below
>>>>> is the output where there are error messages. Please help me in
>>>>> resolving the issue, SO that I can catch kernel and user traces.
>>>>>
>>>>>
>>>>> root at arago:/usr/lttng/modules#
>>>>> arm-none-linux-gnueabi-lttng-sessiond -d
>>>>> root at arago:/usr/lttng/modules#
>>>>> arm-none-linux-gnueabi-lttng-sessiond -vvv DEBUG3: Creating LTTng
>>>>> run directory: /var/run/lttng [in create_lttng_rundir() at
>>>>> main.c:4315] DEBUG2: Kernel consumer err path:
>>>>> /var/run/lttng/kconsumerd/error [in main() at main.c:4543] DEBUG2:
>>>>> Kernel consumer cmd path: /var/run/lttng/kconsumerd/command [in
>>>>> main() at main.c:4545] DEBUG1: Client socket path
>>>>> /var/run/lttng/client-lttng-sessiond [in main() at main.c:4592]
>>>>> DEBUG1: Application socket path /var/run/lttng/apps-lttng-sessiond
>>>>> [in main() at main.c:4593] DEBUG1: LTTng run directory path:
>>>>> /var/run/lttng [in main() at main.c:4594] DEBUG2: UST consumer 32
>>>>> bits err path: /var/run/lttng/ustconsumerd32/error [in main() at
>>>>> main.c:4603] DEBUG2: UST consumer 32 bits cmd path:
>>>>> /var/run/lttng/ustconsumerd32/command [in main() at main.c:4605]
>>>>> DEBUG2: UST consumer 64 bits err path:
>>>>> /var/run/lttng/ustconsumerd64/error [in main() at main.c:4614]
>>>>> DEBUG2: UST consumer 64 bits cmd path:
>>>>> /var/run/lttng/ustconsumerd64/command [in main() at main.c:4616]
>>>>> Error: Already running daemon.
>>>>
>>>> Please kill the lttng-sessiond that is already started (the one
>>>> with -d). Instead of that one, run the sessiond with:
>>>>
>>>> lttng-sessiond -vvv
>>>>
>>>> (don't run lttng-sessiond -d before)
>>>>
>>>> Thanks,
>>>>
>>>> Mathieu
>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Thanks in advance, Pavan
>>>>>
>>>>> -----Original Message----- From: Mathieu Desnoyers
>>>>> [mailto:mathieu.desnoyers at efficios.com] Sent: Friday, June 08,
>>>>> 2012 11:12 PM To: Pavan Anumula Cc: lttng-dev at lists.lttng.org
>>>>> Subject: Re: [lttng-dev] Lttng start failed
>>>>>
>>>>> * Pavan Anumula (pavan.anumula at sasken.com) wrote:
>>>>>> Hi ,
>>>>>>
>>>>>> I am new to LTTng usage, I am trying to use LTTng 2.0.1 and
>>>>>> LTTng-modules-2.0.2 for ARM(omapL138), with Linux kernel 2.6.33
>>>>>> wit RT-29 patch on it.
>>>>>>
>>>>>> After enabling all the kernel events I am facing the below
>>>>>> errors. I loaded all the modules manually by insmod.
>>>>>>
>>>>>>
>>>>>>
>>>>>> root at arago:~/lttng-traces# arm-none-linux-gnueabi-lttng create
>>>>>> newsessiom Session newsessiom created. Traces will be written in
>>>>>> /home/root/lttng-traces/newsessiom-20110325-154922
>>>>>>
>>>>>> root at arago:~/lttng-traces# arm-none-linux-gnueabi-lttng
>>>>>> enable-event -a --kernel All kernel events are enabled in channel
>>>>>> channel0
>>>>>>
>>>>>> root at arago:~/lttng-traces# arm-none-linux-gnueabi-lttng start
>>>>>> LTTng: Failure to write metadata to buffers (timeout) Error:
>>>>>> Starting kernel trace failed
>>>>>>
>>>>>> Please kindly help me on this.
>>>>>
>>>>> I think you should look into the lttng-sessiond --help :
>>>>>
>>>>> --consumerd32-path PATH Specify path for the 32-bit UST
>>>>> consumer daemon binary --consumerd32-libdir PATH Specify path for
>>>>> the 32-bit UST consumer daemon libraries --consumerd64-path PATH
>>>>> Specify path for the 64-bit UST consumer daemon binary
>>>>> --consumerd64-libdir PATH Specify path for the 64-bit UST
>>>>> consumer daemon libraries
>>>>>
>>>>> options. My guess is that lttng-sessiond is not able to find the
>>>>> consumerd binary files, maybe due to a rename or because they have
>>>>> been moved after install.
>>>>>
>>>>> One more thing that might help is to launch the lttng-sessiond
>>>>> with "-vvv" : it will provide verbose output and let us know where
>>>>> things fall apart.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Mathieu
>>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>> Thanks in advance, Pavan
>>>>>>
>>>>>> ________________________________ SASKEN BUSINESS DISCLAIMER:
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>>>>>> Recipient of the message, you must not, directly or indirectly,
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>>>>>> message and you are requested to delete it and inform the sender.
>>>>>> Any views expressed in this message are those of the individual
>>>>>> sender unless otherwise stated. Nothing contained in this message
>>>>>> shall be construed as an offer or acceptance of any offer by
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>>>>>
>>>>>> _______________________________________________ lttng-dev mailing
>>>>>> list lttng-dev at lists.lttng.org
>>>>>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>>>>
>>>>>
>>>>> -- Mathieu Desnoyers Operating System Efficiency R&D Consultant
>>>>> EfficiOS Inc. http://www.efficios.com
>>>>
>>>> -- Mathieu Desnoyers Operating System Efficiency R&D Consultant
>>>> EfficiOS Inc. http://www.efficios.com
>>>
>>> -- Mathieu Desnoyers Operating System Efficiency R&D Consultant
>>> EfficiOS Inc. http://www.efficios.com
>
>
> _______________________________________________ lttng-dev mailing list
> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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