[ltt-dev] performance results I measured with the latest lttng patches

Michael Rubin mrubin at google.com
Wed Sep 24 16:38:50 EDT 2008

On Wed, Sep 24, 2008 at 1:33 PM, Mathieu Desnoyers
<compudj at krystal.dyndns.org> wrote:
> I would say I tend to expect something around the lines of 5%
> performance impact on a flight-recorder mode trace. The current LTTng
> might suffer from TLB entries trashing because it uses vmap'd memory,
> something that should be looked at.

OK. For our first deliverable that is a good goal for us. After we
stabilize it internally amidst our other things we might be able to
help lower that even more.

As always thanks for the quick replies.


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