[lttng-dev] LTTng on Android: no session daemon available
Mathieu Desnoyers
mathieu.desnoyers at efficios.com
Sat Jul 20 16:06:06 EDT 2013
You'll want to dig into the past month's threads referring to Android on
the lttng-dev mailing list.
Some work has been done on lttng-tools to support it, but the patches
have never been cleaned up following our feedback, so it is not merged
yet.
Thanks,
Mathieu
* Cao Gao (caogao at umich.edu) wrote:
> Hi,
>
> I’m trying to use LTTng on Android 4.0.4 with Linux kernel version of
> 3.0.15.
> I cross-compiled the LTTng modules and tools on my Ubuntu 12.04 machine.
>
> First I installed all the LTTng modules using *insmod*, because there is no
> *modprobe* in Android. It worked fine.
> However, when I tried to run *lttng*, it failed due to "No session daemon
> is available" error. I tried to run* lttng-sessiond*, then it just kept
> hanging and cannot finish.
> Even I kept *lttng-sessiond* hanging in a new terminal session and ran *
> lttng* in a separate terminal, it gave the same error.
>
> I'm posting the log below.
>
> Any help would be greatly appreciated!
>
> Thanks,
> Cao
>
> *root at android:/data/lttng/bin # ./lttng -vvv list -k*
>
> DEBUG1 [2016/2016]: Session daemon at: /data/lttng/bin/lttng-sessiond
> > (in check_sessiond() at lttng.c:381)
> > Spawning a session daemon
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-tracer
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-lib-ring-buffer
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-discard
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-overwrite
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-metadata-client
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-mmap-discard
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-mmap-overwrite
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-metadata-mmap-client
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-probe-lttng
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > sh: /sbin/modprobe: not found
> > Warning: No tracing group detected
> > DEBUG1 [2016/2016]: SIGUSR1 caught (in sighandler() at lttng.c:204)
> > DEBUG2 [2016/2016]: Session name: (null) (in cmd_list() at
> > commands/list.c:743)
> > DEBUG1 [2016/2016]: Getting kernel tracing events (in
> > list_kernel_events() at commands/list.c:433)
> > Error: Unable to list kernel events: No session daemon is available
> > Error: Command error
> > DEBUG1 [2016/2016]: Clean exit (in clean_exit() at lttng.c:175)
>
>
>
> *root at android:/data/lttng/bin # ./lttng-sessiond -vvv*
>
> >
> > DEBUG3 [2132/2132]: Creating LTTng run directory: /data/lttng (in
> > create_lttng_rundir() at main.c:3853)
> > DEBUG2 [2132/2132]: Kernel consumer err path:
> > /data/lttng/kconsumerd/error (in main() at main.c:4140)
> > DEBUG2 [2132/2132]: Kernel consumer cmd path:
> > /data/lttng/kconsumerd/command (in main() at main.c:4142)
> > DEBUG1 [2132/2132]: Client socket path
> > /data/lttng/client-lttng-sessiond (in main() at main.c:4195)
> > DEBUG1 [2132/2132]: Application socket path
> > /data/lttng/lttng-ust-sock-4 (in main() at main.c:4196)
> > DEBUG1 [2132/2132]: Application wait path /lttng-ust-wait-4 (in main()
> > at main.c:4197)
> > DEBUG1 [2132/2132]: LTTng run directory path: /data/lttng (in main()
> > at main.c:4198)
> > DEBUG2 [2132/2132]: UST consumer 32 bits err path:
> > /data/lttng/ustconsumerd32/error (in main() at main.c:4207)
> > DEBUG2 [2132/2132]: UST consumer 32 bits cmd path:
> > /data/lttng/ustconsumerd32/command (in main() at main.c:4209)
> > DEBUG2 [2132/2132]: UST consumer 64 bits err path:
> > /data/lttng/ustconsumerd64/error (in main() at main.c:4218)
> > DEBUG2 [2132/2132]: UST consumer 64 bits cmd path:
> > /data/lttng/ustconsumerd64/command (in main() at main.c:4220)
> > DEBUG2 [2132/2132]: Creating consumer directory:
> > /data/lttng/kconsumerd (in set_consumer_sockets() at main.c:3895)
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-tracer
> > DEBUG2 [2132/2132]: Kernel tracer version validated (major version 2)
> > (in kernel_validate_version() at kernel.c:688)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-ftrace (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-kprobes (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-kretprobes (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-lib-ring-buffer
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-discard
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-overwrite
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-metadata-client
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-mmap-discard
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-client-mmap-overwrite
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-ring-buffer-metadata-mmap-client
> > sh: /sbin/modprobe: not found
> > Error: Unable to load module lttng-probe-lttng
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-types (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-asoc (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-block (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-btrfs (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-compaction (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-ext3 (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-ext4 (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-gpio (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-irq (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-jbd (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-jbd2 (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-kmem (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-kvm (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-lock (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-module (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-napi (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-net (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-power (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-printk (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-random (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-rcu (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-regmap (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-regulator (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-rpm (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sched (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-scsi (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-signal (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-skb (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sock (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-statedump (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-sunrpc (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-timer (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-udp (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-vmscan (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-workqueue (in
> > modprobe_lttng_data() at modprobe.c:227)
> > sh: /sbin/modprobe: not found
> > DEBUG1 [2132/2132]: Modprobe successfully lttng-probe-writeback (in
> > modprobe_lttng_data() at modprobe.c:227)
> > DEBUG1 [2132/2132]: Kernel tracer fd 6 (in init_kernel_tracer() at
> > main.c:2139)
> > DEBUG2 [2132/2132]: Creating consumer directory:
> > /data/lttng/ustconsumerd64 (in set_consumer_sockets() at main.c:3895)
> > DEBUG2 [2132/2132]: Creating consumer directory:
> > /data/lttng/ustconsumerd32 (in set_consumer_sockets() at main.c:3895)
> > DEBUG1 [2132/2132]: Signal handler set for SIGTERM, SIGPIPE and SIGINT
> > (in set_signal_handler() at main.c:3987)
> > DEBUG3 [2132/2132]: Session daemon client socket 10 and application
> > socket 11 created (in init_daemon_socket() at main.c:3757)
> > Warning: No tracing group detected
> > DEBUG3 [2132/2132]: Created hashtable size 4 at 0x1250208 of type 2
> > (in lttng_ht_new() at hashtable.c:112)
> > DEBUG3 [2132/2132]: Global buffer per UID registry initialized (in
> > buffer_reg_init_uid_registry() at buffer-registry.c:98)
> > DEBUG3 [2132/2132]: Created hashtable size 4 at 0x1250360 of type 1
> > (in lttng_ht_new() at hashtable.c:112)
> > DEBUG3 [2132/2132]: Global buffer per PID registry initialized (in
> > buffer_reg_init_pid_registry() at buffer-registry.c:219)
> > DEBUG1 [2132/2132]: epoll set max size is 153106 (in
> > compat_epoll_set_max_size() at compat-epoll.c:270)
> > DEBUG1 [2132/2132]: Command subsystem initialized (in cmd_init() at
> > cmd.c:2146)
> > DEBUG1 [2132/2132]: Pid 2132 written in file
> > /data/lttng/lttng-sessiond.pid (in utils_create_pid_file() at utils.c:237)
> > DEBUG1 [2132/2182]: [thread] Manage health check started (in
> > thread_manage_health() at main.c:3106)
> > DEBUG1 [2132/2182]: Health check ready (in thread_manage_health() at
> > main.c:3148)
> > DEBUG1 [2132/2185]: [thread] Manage application registration started
> > (in thread_registration_apps() at main.c:1542)
> > DEBUG1 [2132/2185]: Notifying applications of session daemon state: 1
> > (in notify_ust_apps() at main.c:507)
> > DEBUG1 [2132/2185]: Got the wait shm fd 21 (in get_wait_shm() at
> > shm.c:122)
> > DEBUG1 [2132/2185]: Futex wait update active 1 (in futex_wait_update()
> > at futex.c:63)
> > DEBUG1 [2132/2185]: Accepting application registration (in
> > thread_registration_apps() at main.c:1579)
> > DEBUG1 [2132/2183]: [thread] Manage client started (in
> > thread_manage_clients() at main.c:3303)
> > DEBUG1 [2132/2183]: Accepting client command ... (in
> > thread_manage_clients() at main.c:3349)
> > DEBUG1 [2132/2186]: [thread] Manage application started (in
> > thread_manage_apps() at main.c:1152)
> > DEBUG1 [2132/2186]: Apps thread polling on 2 fds (in
> > thread_manage_apps() at main.c:1182)
> > DEBUG1 [2132/2188]: [thread] Thread manage kernel started (in
> > thread_manage_kernel() at main.c:702)
> > DEBUG1 [2132/2188]: Updating kernel poll set (in update_kernel_poll()
> > at main.c:568)
> > DEBUG1 [2132/2188]: Thread kernel polling on 2 fds (in
> > thread_manage_kernel() at main.c:747)
> > DEBUG1 [2132/2184]: [thread] Dispatch UST command started (in
> > thread_dispatch_ust_registration() at main.c:1352)
> > DEBUG1 [2132/2184]: Futex n to 1 prepare done (in futex_nto1_prepare()
> > at futex.c:75)
> > DEBUG1 [2132/2184]: Woken up but nothing in the UST command queue (in
> > thread_dispatch_ust_registration() at main.c:1365)
> _______________________________________________
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--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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