[ltt-dev] performance results I measured with the latest lttng patches
compudj at krystal.dyndns.org
Wed Sep 24 16:13:21 EDT 2008
* Jiaying Zhang (jiayingz at google.com) wrote:
> Hi Jan,
> > > lttng-compiled-in, all markers disabled: Throughput 743.931 MB/sec
> > > lttng-compiled-in, default markers enabled, taking an active trace in
> > normal
> > > mode: Throughput 500.24 MB/sec
> > Isn't lttng-compile-out missing here? Or did you ran the same base kernel?
> I used the same base kernel here.
Just to keep you informed of the process, I am currently bissecting the
LTTng tree to find out which patch is reponsible for the slowdown. It
seems to point in towards the irq instrumentation patch. More to come
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