Re: git: f339a3ef6369 - main - dtrace: remove unnecessary fflush()
- In reply to: Chuck Silvers : "Re: git: f339a3ef6369 - main - dtrace: remove unnecessary fflush()"
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Date: Fri, 11 Feb 2022 12:31:49 UTC
On 10/02/2022 20:32, Chuck Silvers wrote: > On Thu, Feb 10, 2022 at 02:36:30PM +0100, Mateusz Piotrowski wrote: >> >> Did you have some specific way to measure the CPU overhead of DTrace here? >> I'm interested in this kind of performance measurements and I wonder if >> anything more sophisticated than observing top(1) was used to test this >> change. Thanks! > I just looked at top and saw that the CPU usage of the dtrace process > dropped from 100% to around 13%. More importantly, when the fflush was > present dtrace would report that millions of output records were being > dropped, and after the fflush was removed then dtrace no longer reported > any dropped output. Thanks! Mateusz