From mboxrd@z Thu Jan 1 00:00:00 1970 From: vjanandr85@gmail.com (Vijay Anand) Date: Thu, 26 May 2016 17:53:02 +0530 Subject: [lttng-dev] scale numbers for LTTNG In-Reply-To: References: Message-ID: Could anyone please let us know how do we go about this ? Regards, Vijay On Tue, May 24, 2016 at 11:31 AM, Vijay Anand wrote: > Hello Folks, > > We have been evaluating LTTNG for use in our production systems for user > space tracing. We have evaluated most of the features supported by LTTNG > and very much see a value add LTTNG brings into our debugging > infrastructure. > > - Our current requirement is to trace Userspace programs running on > linux. > - Each of the linux processes define their own tracepoint providers. > - We would like to trace event histories of each process independently. > - We could potentially have 1000s of such processes running > simultaneously. > - We concluded on using a session/channel to trace one tracepoint > provider corresponding to a unique process. > - But I understand we could also create one system wide session and > use channels to trace each of the providers. Either of the approaches seems > to work for us. > - But upon evaluating I see that we could create only 25 active > process-sessions and not traces from all the processes are logged. > - Please note I have tried increasing the buffer size and the > number of buffers. This doesn't help. > - Each of the process trace 52 events at and interval of 1 second > each. > - I have evaluated this with lttng in session,live and snapshot modes > and I have not been getting favourable. > > Could you folks share the scale numbers that LTTNG supports, especially > when it comes to tracing user space programs ? > > Regards, > Vijay > ​​ > -------------- next part -------------- An HTML attachment was scrubbed... URL: