Date: Tue, 20 May 2014 09:04:25 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org> Subject: Re: svn commit: r265792 - head/sys/kern Message-ID: <CAJ-Vmonby1MVuuJnWoXcPh1cTE1q0SQEQhfL_ESzoDEWHtKcCw@mail.gmail.com> In-Reply-To: <20140520154113.GA23318@zxy.spb.ru> References: <201405100053.s4A0rbF9080571@svn.freebsd.org> <20140511083114.GA53503@zxy.spb.ru> <CAJ-Vmo=x-JkHSVDT4REWQ_g=vb45T%2BTfrpZ8bc28NNbPd-ZYsg@mail.gmail.com> <20140520154113.GA23318@zxy.spb.ru>
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On 20 May 2014 08:41, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote: >> (But if you try it on 10.0 and it changes things, by all means let me know.) > > I am try on 10.0, but not sure about significant improvement (may be > 10%). > > For current CPU (E5-2650 v2 @ 2.60GHz) hwpmc don't working (1. after > collect some data `pmcstat -R sample.out -G out.txt` don't decode any; > 2. kldunload hwpmc do kernel crash) and I can't collect detailed > profile information. Yup. I'm starting to get really ticked off at how pmc logging on multi-core devices just "stops" after a while. I'll talk with other pmc people and see if we can figure out what the heck is going on. :( -a
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