Date: Tue, 20 May 2014 20:26:57 +0400 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Adrian Chadd <adrian@freebsd.org> 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: <20140520162657.GG3327@zxy.spb.ru> In-Reply-To: <CAJ-Vmonby1MVuuJnWoXcPh1cTE1q0SQEQhfL_ESzoDEWHtKcCw@mail.gmail.com> 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> <CAJ-Vmonby1MVuuJnWoXcPh1cTE1q0SQEQhfL_ESzoDEWHtKcCw@mail.gmail.com>
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On Tue, May 20, 2014 at 09:04:25AM -0700, Adrian Chadd wrote: > 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. :( pmc work on E5-2620 @ 2.00GHz (NOT E5 _v2_)
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