On Sonntag, 13. August 2023 16:58:17 CEST Bala Gundeboina via lttng-dev wrote: > Hi, > > I am Using LTTng in my project , I am recording a kernel session for long > duration (eg more than 15minutes) I am enabling all the events for > recording but some events discarding after stopping the session, if i run > more than 5 minutes only some events are discarding. I have tried to change > in the .ltttngrc file also to increase buffer-size.
While not directly related to your question, I strongly encourage you to review the list of events and only enable those that are actually required for the specific issue you are investigating. Some kernel events are _extremely_ high frequency but have often no practical use for many (at least in my experience and for my own purposes). Examples for the latter are esp. the kmalloc tracepoints. > lttng destroy > Destroying session `my-kernel-session`... > Session `my-kernel-session` destroyed > Warning: 94424667 events were discarded, please refer to the documentation > on channel configuration > > actually when i am running below command i am getting below warning i am > thinking this is the issue because sometimes this warning is not coming > that i didn't seen discarded events. how to overcome this problem can you > provide some detailed lttng-sessiond --daemonize > Warning: Failed to produce a random seed using getrandom(), falling back to > pseudo-random device seed generation which will block until its pool is > initialized: Failed to get true random data using getre > > Thanks & Regards > Bala Gundeboina > This message contains information that may be privileged or confidential and > is the property of the KPIT Technologies Ltd. It is intended only for the > person to whom it is addressed. If you are not the intended recipient, you > are not authorized to read, print, retain copy, disseminate, distribute, or > use this message or any part thereof. If you receive this message in error, > please notify the sender immediately and delete all copies of this message. > KPIT Technologies Ltd. does not accept any liability for virus infected > mails. -- Milian Wolff | milian.wo...@kdab.com | Senior Software Engineer KDAB (Deutschland) GmbH, a KDAB Group company Tel: +49-30-521325470 KDAB - The Qt, C++ and OpenGL Experts _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
