Re: [lttng-dev] Cost of user-space tracepoint()

2014-09-06 Thread ChitlurSrinivasa, Venkatesh
I sent this mail few days back and didn't receive response. So I am sending it again. We are planning to use LTTng UST as it supports lot of interesting features, but have some performance concerns (as compared with our in-house tracing tool). Please point me to the latest benchmark tests and p

[lttng-dev] Cost of user space tracepoint()

2014-08-20 Thread ChitlurSrinivasa, Venkatesh
I am sure you guys will do regular performance runs on different versions of LTTng, but I couldn't find any links to the latest results. I was trying to find the cost of a tracepoint() recording one integer. On CPU Intel Xeon E5-2680 v2 @ 2.80GHz?, running Linux 3.6.11? and lttng 2.4.1, I am ge