<html><body style="font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-size: 12px;">Hi,<br />> Not sure I understand which version of lttng-modules you are currently using.<br />
Sorry that was typo, I meant version 2.10 of lttng kernel modules and version 2.5 of lttng tools. Please find the modinfo result below.<br />pi@raspberrypi-BKe28DDGW7:~ $ modinfo lttng-tracer<br />filename: /lib/modules/4.4.44-v7+/extra/lttng-tracer.ko<br />version: 2.10.0-pre<br />description: LTTng Events<br />author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com><br />license: GPL and additional rights<br />srcversion: 93F12D7CDB1873B93DF8BE4<br />depends: lttng-lib-ring-buffer,lttng-kretprobes,lttng-clock,lttng-kprobes,lttng-statedump,lttng-ftrace<br />vermagic: 4.4.44-v7+ SMP mod_unload modversions ARMv7<br /> <br />
>Can you share with us the result of 'modinfo lttng-tracer'?<br />
>Could you pastebinit (or equivalent) the log produced by the lttng-sessiond in<br />
>verbose mode (lttng-sessiond -vvv).<br />please find below.<br /><b>pi@raspberrypi-BKe28DDGW7:~ $ sudo lttng-sessiond -vvv</b><br />DEBUG3 - 04:41:38.701706 [1086/1086]: Creating LTTng run directory: /var/run/lttng (in create_lttng_rundir() at main.c:4690)<br />DEBUG2 - 04:41:38.701861 [1086/1086]: Kernel consumer err path: /var/run/lttng/kconsumerd/error (in main() at main.c:5078)<br />DEBUG2 - 04:41:38.701880 [1086/1086]: Kernel consumer cmd path: /var/run/lttng/kconsumerd/command (in main() at main.c:5080)<br />DEBUG1 - 04:41:38.701933 [1086/1086]: Client socket path /var/run/lttng/client-lttng-sessiond (in main() at main.c:5138)<br />DEBUG1 - 04:41:38.701951 [1086/1086]: Application socket path /var/run/lttng/lttng-ust-sock-5 (in main() at main.c:5139)<br />DEBUG1 - 04:41:38.701966 [1086/1086]: Application wait path /lttng-ust-wait-5 (in main() at main.c:5140)<br />DEBUG1 - 04:41:38.701981 [1086/1086]: LTTng run directory path: /var/run/lttng (in main() at main.c:5141)<br />DEBUG2 - 04:41:38.702014 [1086/1086]: UST consumer 32 bits err path: /var/run/lttng/ustconsumerd32/error (in main() at main.c:5150)<br />DEBUG2 - 04:41:38.702030 [1086/1086]: UST consumer 32 bits cmd path: /var/run/lttng/ustconsumerd32/command (in main() at main.c:5152)<br />DEBUG2 - 04:41:38.702064 [1086/1086]: UST consumer 64 bits err path: /var/run/lttng/ustconsumerd64/error (in main() at main.c:5161)<br />DEBUG2 - 04:41:38.702079 [1086/1086]: UST consumer 64 bits cmd path: /var/run/lttng/ustconsumerd64/command (in main() at main.c:5163)<br />DEBUG3 - 04:41:38.702338 [1086/1086]: Created hashtable size 4 at 0x550de0a0 of type 1 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG3 - 04:41:38.702363 [1086/1086]: Created hashtable size 4 at 0x550de320 of type 1 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG3 - 04:41:38.702383 [1086/1086]: Created hashtable size 4 at 0x550de500 of type 1 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG3 - 04:41:38.702640 [1086/1086]: Created hashtable size 4 at 0x550de708 of type 1 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG2 - 04:41:38.702661 [1086/1086]: Creating consumer directory: /var/run/lttng/kconsumerd (in set_consumer_sockets() at main.c:4732)<br />DEBUG1 - 04:41:38.755859 [1086/1086]: Modprobe successfully lttng-tracer (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.761092 [1086/1086]: Modprobe successfully lttng-lib-ring-buffer (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.771345 [1086/1086]: Modprobe successfully lttng-ring-buffer-client-discard (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.781390 [1086/1086]: Modprobe successfully lttng-ring-buffer-client-overwrite (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.791401 [1086/1086]: Modprobe successfully lttng-ring-buffer-metadata-client (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.801943 [1086/1086]: Modprobe successfully lttng-ring-buffer-client-mmap-discard (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.811961 [1086/1086]: Modprobe successfully lttng-ring-buffer-client-mmap-overwrite (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.821920 [1086/1086]: Modprobe successfully lttng-ring-buffer-metadata-mmap-client (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.829615 [1086/1086]: Modprobe successfully lttng-types (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.834756 [1086/1086]: Modprobe successfully lttng-ftrace (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.839917 [1086/1086]: Modprobe successfully lttng-kprobes (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.845104 [1086/1086]: Modprobe successfully lttng-kretprobes (in modprobe_lttng() at modprobe.c:190)<br />DEBUG2 - 04:41:38.845198 [1086/1086]: Kernel tracer version validated (major version 2) (in kernel_validate_version() at kernel.c:701)<br />DEBUG1 - 04:41:38.853708 [1086/1086]: Modprobe successfully lttng-probe-asoc (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.862249 [1086/1086]: Modprobe successfully lttng-probe-block (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.870416 [1086/1086]: Modprobe successfully lttng-probe-btrfs (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.878920 [1086/1086]: Modprobe successfully lttng-probe-compaction (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.884270 [1086/1086]: Modprobe successfully lttng-probe-ext3 (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.892863 [1086/1086]: Modprobe successfully lttng-probe-ext4 (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.901249 [1086/1086]: Modprobe successfully lttng-probe-gpio (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.909818 [1086/1086]: Modprobe successfully lttng-probe-irq (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.915031 [1086/1086]: Modprobe successfully lttng-probe-jbd (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.923627 [1086/1086]: Modprobe successfully lttng-probe-jbd2 (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.931509 [1086/1086]: Modprobe successfully lttng-probe-kmem (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.936862 [1086/1086]: Modprobe successfully lttng-probe-kvm (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.942096 [1086/1086]: Modprobe successfully lttng-probe-kvm-x86 (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.947239 [1086/1086]: Modprobe successfully lttng-probe-kvm-x86-mmu (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.952458 [1086/1086]: Modprobe successfully lttng-probe-lock (in modprobe_lttng() at modprobec:190)<br />DEBUG1 - 04:41:38.961008 [1086/1086]: Modprobe successfully lttng-probe-module (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.969459 [1086/1086]: Modprobe successfully lttng-probe-napi (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.978036 [1086/1086]: Modprobe successfully lttng-probe-net (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.986109 [1086/1086]: Modprobe successfully lttng-probe-power (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:38.994188 [1086/1086]: Modprobe successfully lttng-probe-printk (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.216487 [1086/1086]: Modprobe successfully lttng-probe-random (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.107144 [1086/1086]: Modprobe successfully lttng-probe-rcu (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.192769 [1086/1086]: Modprobe successfully lttng-probe-regmap (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.245820 [1086/1086]: Modprobe successfully lttng-probe-regulator (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.297071 [1086/1086]: Modprobe successfully lttng-probe-rpm (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.377675 [1086/1086]: Modprobe successfully lttng-probe-sched (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.458216 [1086/1086]: Modprobe successfully lttng-probe-scsi (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.543405 [1086/1086]: Modprobe successfully lttng-probe-signal (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.627664 [1086/1086]: Modprobe successfully lttng-probe-skb (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.708022 [1086/1086]: Modprobe successfully lttng-probe-sock (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.787606 [1086/1086]: Modprobe successfully lttng-probe-statedump (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.868531 [1086/1086]: Modprobe successfully lttng-probe-sunrpc (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.953995 [1086/1086]: Modprobe successfully lttng-probe-timer (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.104008 [1086/1086]: Modprobe successfully lttng-probe-udp (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.112143 [1086/1086]: Modprobe successfully lttng-probe-vmscan (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.120207 [1086/1086]: Modprobe successfully lttng-probe-v4l2 (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.128172 [1086/1086]: Modprobe successfully lttng-probe-workqueue (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.136462 [1086/1086]: Modprobe successfully lttng-probe-writeback (in modprobe_lttng() at modprobe.c:190)<br />DEBUG1 - 04:41:39.136534 [1086/1086]: Kernel tracer fd 7 (in init_kernel_tracer() at main.c:2535)<br />DEBUG2 - 04:41:39.136566 [1086/1086]: Creating consumer directory: /var/run/lttng/ustconsumerd64 (in set_consumer_sockets() at main.c:4732)<br />DEBUG2 - 04:41:39.136838 [1086/1086]: Creating consumer directory: /var/run/lttng/ustconsumerd32 (in set_consumer_sockets() at main.c:4732)<br />DEBUG3 - 04:41:39.137038 [1086/1086]: Session daemon client socket 10 and application socket 11 created (in init_daemon_socket() at main.c:4598)<br />DEBUG1 - 04:41:39.137166 [1086/1086]: All permissions are set (in set_permissions() at main.c:4678)<br />DEBUG3 - 04:41:39.137228 [1086/1086]: Created hashtable size 4 at 0x550e0048 of type 2 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG3 - 04:41:39.137248 [1086/1086]: Global buffer per UID registry initialized (in buffer_reg_init_uid_registry() at buffer-registry.c:99)<br />DEBUG3 - 04:41:39.137267 [1086/1086]: Created hashtable size 4 at 0x550e0270 of type 2 (in lttng_ht_new() at hashtable.c:127)<br />DEBUG3 - 04:41:39.137283 [1086/1086]: Global buffer per PID registry initialized (in buffer_reg_init_pid_registry() at buffer-registry.c:220)<br />DEBUG1 - 04:41:39.137335 [1086/1086]: epoll set max size is 311472 (in compat_epoll_set_max_size() at compat-epoll.c:290)<br />DEBUG1 - 04:41:39.137357 [1086/1086]: Command subsystem initialized (in cmd_init() at cmd.c:3227)<br />DEBUG1 - 04:41:39.137456 [1086/1086]: Pid 1086 written in file /var/run/lttng/lttng-sessiond.pid (in utils_create_pid_file() at utils.c:467)<br />DEBUG1 - 04:41:39.137549 [1086/1086]: Pid 5345 written in file /var/run/lttng/jul.port (in utils_create_pid_file() at utils.c:467)<br />DEBUG1 - 04:41:39.137620 [1086/1086]: TCP inet operation timeout set to 216 sec (in lttcomm_inet_init() at inet.c:529)<br />DEBUG1 - 04:41:39.137643 [1086/1086]: Health check time delta in seconds set to 236 (in health_init() at health.c:73)<br />DEBUG1 - 04:41:39.137844 [1086/1188]: [ht-thread] startup. (in thread_ht_cleanup() at ht-cleanup.c:36)<br />DEBUG1 - 04:41:39.137916 [1086/1190]: [thread] Manage client started (in thread_manage_clients() at main.c:3948)<br />DEBUG1 - 04:41:39.138137 [1086/1190]: Accepting client command .. (in thread_manage_clients() at main.c:3995)<br />DEBUG1 - 04:41:39.138253 [1086/1193]: [thread] Manage application started (in thread_manage_apps() at main.c:1425)<br />DEBUG1 - 04:41:39.138319 [1086/1194]: [ust-thread] Manage application notify command (in ust_thread_manage_notify() at ust-thread.c:39)<br />DEBUG1 - 04:41:39.138038 [1086/1191]: [thread] Dispatch UST command started (in thread_dispatch_ust_registration() at main.c:1711)<br />DEBUG1 - 04:41:39.138788 [1086/1191]: Futex n to 1 prepare done (in futex_nto1_prepare() at futex.c:75)<br />DEBUG1 - 04:41:39.138968 [1086/1191]: Woken up but nothing in the UST command queue (in thread_dispatch_ust_registration() at main.c:1734)<br />DEBUG1 - 04:41:39.138185 [1086/1192]: [thread] Manage application registration started (in thread_registration_apps() at main.c:1935)<br />DEBUG3 - 04:41:39.138202 [1086/1188]: [ht-thread] Polling on 2 fds. (in thread_ht_cleanup() at ht-cleanup.c:64)<br />DEBUG3 - 04:41:39.138566 [1086/1194]: [ust-thread] Manage notify polling on 2 fds (in ust_thread_manage_notify() at ust-thread.c:68)<br />DEBUG1 - 04:41:39.138586 [1086/1193]: Apps thread polling on 2 fds (in thread_manage_apps() at main.c:1455)<br />DEBUG1 - 04:41:39.138603 [1086/1195]: [jul-thread] Manage JUL application registration (in jul_thread_manage_registration() at jul-thread.c:260)<br />DEBUG3 - 04:41:39.139593 [1086/1195]: URI string: tcp://localhost (in uri_parse() at uri.c:293)<br />DEBUG1 - 04:41:39.139744 [1086/1192]: Notifying applications of session daemon state: 1 (in notify_ust_apps() at main.c:756)<br />DEBUG1 - 04:41:39.140036 [1086/1192]: Got the wait shm fd 26 (in get_wait_shm() at shm.c:115)<br />DEBUG1 - 04:41:39.140255 [1086/1192]: Futex wait update active 1 (in futex_wait_update() at futex.c:63)<br />DEBUG1 - 04:41:39.140442 [1086/1192]: Accepting application registration (in thread_registration_apps() at main.c:1972)<br />DEBUG1 - 04:41:39.137859 [1086/1189]: [thread] Manage health check started (in thread_manage_health() at main.c:3762)<br />DEBUG2 - 04:41:39.140418 [1086/1195]: IP address resolved to 127.0.0.1 (in set_ip_address() at uri.c:134)<br />DEBUG3 - 04:41:39.140884 [1086/1195]: URI dtype: 1, proto: 1, host: localhost, subdir: , ctrl: 0, data: 0 (in uri_parse() at uri.c:507)<br />DEBUG1 - 04:41:39.140941 [1086/1195]: [jul-thread] Listening on TCP port 5345 and socket 27 (in init_tcp_socket() at jul-thread.c:158)<br />DEBUG3 - 04:41:39.141006 [1086/1195]: [jul-thread] Manage JUL polling on 2 fds (in jul_thread_manage_registration() at jul-thread.c:288)<br />DEBUG1 - 04:41:39.138615 [1086/1196]: [thread] Thread manage kernel started (in thread_manage_kernel() at main.c:957)<br />DEBUG1 - 04:41:39.141147 [1086/1196]: Updating kernel poll set (in update_kernel_poll() at main.c:817)<br />DEBUG1 - 04:41:39.141166 [1086/1196]: Thread kernel polling on 2 fds (in thread_manage_kernel() at main.c:1002)<br />DEBUG1 - 04:41:39.138664 [1086/1197]: [load-session-thread] Load session (in thread_load_session() at load-session-thread.c:90)<br />DEBUG1 - 04:41:39.141624 [1086/1189]: Health check ready (in thread_manage_health() at main.c:3827)<br /><b>I/O warning : failed to load external entity "/usr/share/xml/lttng/session.xsd"<br />XML Error: Failed to locate the main schema resource at '/usr/share/xml/lttng/session.xsd'.<br />Error: XSD parsing failed<br />Error: Session load failed: Invalid session configuration</b><br /><br />Thanks & Regards<br />Abhishek Kumar<br />7801078513 <br /><br /><blockquote><br />----- Original Message -----<br /><div style="width:100%;background:rgb(228,228,228);"><div style="font-weight:bold;">From:</div> "Jonathan Rajotte-Julien" <jonathan.rajotte-julien@efficios.com></div><br /><div style="font-weight:bold;">To:</div><abhishekk@uurmi.com><br /><div style="font-weight:bold;">Cc:</div><lttng-dev@lists.lttng.org><br /><div style="font-weight:bold;">Sent:</div>Mon, 3 Apr 2017 11:20:24 -0400<br /><div style="font-weight:bold;">Subject:</div>Re: [lttng-dev] Lttng trace showing empty result while doing lttng view<br /><br /><br />
On Mon, Apr 03, 2017 at 11:56:57AM +0530, abhishekk@uurmi.com wrote:<br />
> <br />
> <br />
> I am trying to trace raspberry (I am using raspberry 3 B ) Linux<br />
> kernel by using lttng. The problem i am facing is after the successful<br />
> completion of running following commands i am not able to see tracing<br />
> result. It seems tracing file is empty. 1. lltng create mysession<br />
> <br />
> 2. lttng enable-event -a -k <br />
> <br />
> 3. lttng start <br />
> <br />
> 4 lttng stop 5<br />
> <br />
> . lttng view<br />
> <br />
> Note:- I am not facing any error while running above command and<br />
> kernel tracing file is generated at proper path. And I am not facing<br />
> this problem when i am tracing for user space application. <br />
> <br />
> I am using version 2.9 of kernel modules and version 2.5 of lttng<br />
> modules.Kernel modules are loaded i can see using lsmod. <br /><br />
Not sure I understand which version of lttng-modules you are currently using.<br /><br />
Can you share with us the result of 'modinfo lttng-tracer'?<br />
Could you pastebinit (or equivalent) the log produced by the lttng-sessiond in<br />
verbose mode (lttng-sessiond -vvv).<br /><br />
Please take a look at the bug reporting guidelines [1].<br /><br />
Cheers<br /><br />
[1] http://lttng.org/community/#bug-reporting-guidelines<br /><br />
> Thanks & Regards<br />
> Abhishek Kumar<br />
> 7801078513 <br />
> <br />
> -------------------------<br />
> Email sent using E-interact Webmail<br /><br />
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> lttng-dev@lists.lttng.org<br />
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-- <br />
Jonathan Rajotte-Julien<br />
EfficiOS<br /></blockquote><hr>Email sent using E-interact Webmail</body></html>