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Bug #142

Python application freeze when registering to sessiond

Added by Yannick Brosseau about 8 years ago. Updated about 8 years ago.

Status:
Resolved
Priority:
Critical
Target version:
Start date:
03/01/2012
Due date:
% Done:

0%

Estimated time:

Description

A python application freeze when we try to start it.

We get the following error message on the console:
libust[11028/11028]: Error: Timed out waiting for ltt-sessiond (in lttng_ust_init() at lttng-ust-comm.c:873)

The corresponding output of lttng-sessiond -vvv:

DEBUG1: Accepting client command ... [in thread_manage_clients() at main.c:3627]
DEBUG1: UST registration received with pid:11028 ppid:11027 uid:0 gid:0 sock:19 name:python (version 2.0) [in thread_registration_apps() at main.c:1392]
DEBUG1: Futex n to 1 wake done [in futex_nto1_wake() at futex.c:101]
DEBUG1: Accepting application registration [in thread_registration_apps() at main.c:1322]
DEBUG1: Futex n to 1 wait done [in futex_nto1_wait() at futex.c:88]
DEBUG1: Futex n to 1 prepare done [in futex_nto1_prepare() at futex.c:74]
DEBUG1: Dispatching UST registration pid:11028 ppid:11027 uid:0 gid:0 sock:19 name:python (version 2.0) [in thread_dispatch_ust_registration() at main.c:1245]
DEBUG1: Woken up but nothing in the UST command queue [in thread_dispatch_ust_registration() at main.c:1233]
DEBUG3: Created hashtable size 4 at 0x21ba4b0 of type 1 [in lttng_ht_new() at hashtable.c:96]
DEBUG1: App registered with pid:11028 ppid:11027 uid:0 gid:0 sock:19 name:python (version 2.0) [in ust_app_register() at ust-app.c:1317]
DEBUG2: UST app PID 11028 is compatible with major version 2 (supporting <= 2) [in ust_app_validate_version() at ust-app.c:2562]
DEBUG2: UST app global update for app sock 19 for session id 1 [in ust_app_global_update() at ust-app.c:2232]
DEBUG2: UST app pid: 11028 session id 1 not found, creating it [in create_ust_app_session() at ust-app.c:855]
DEBUG3: Created hashtable size 4 at 0x21bb7b0 of type 0 [in lttng_ht_new() at hashtable.c:96]
DEBUG2: Shadow copy of session handle -1 [in shadow_copy_session() at ust-app.c:766]
DEBUG2: Channel channel0 not found on shadow session copy, creating it [in shadow_copy_session() at ust-app.c:795]
DEBUG3: Created hashtable size 4 at 0x21bc5c0 of type 1 [in lttng_ht_new() at hashtable.c:96]
DEBUG3: Created hashtable size 4 at 0x21bc860 of type 0 [in lttng_ht_new() at hashtable.c:96]
DEBUG3: UST app channel channel0 allocated [in alloc_ust_app_channel() at ust-app.c:281]
DEBUG2: UST app shadow copy of channel channel0 started [in shadow_copy_channel() at ust-app.c:706]
DEBUG2: UST event * not found on shadow copy channel [in shadow_copy_channel() at ust-app.c:733]
DEBUG3: Created hashtable size 4 at 0x21bce90 of type 1 [in lttng_ht_new() at hashtable.c:96]
DEBUG3: UST app event * allocated [in alloc_ust_app_event() at ust-app.c:316]
DEBUG3: UST app shadow copy of channel channel0 done [in shadow_copy_channel() at ust-app.c:743]


Files

sample_tracepoint_python.c (736 Bytes) sample_tracepoint_python.c Yannick Brosseau, 03/01/2012 10:43 AM
sample.py (97 Bytes) sample.py Yannick Brosseau, 03/01/2012 10:43 AM
setup.py (384 Bytes) setup.py Yannick Brosseau, 03/01/2012 10:43 AM
sample_tracepoint.h (709 Bytes) sample_tracepoint.h Yannick Brosseau, 03/01/2012 10:43 AM

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