Date: Fri, 6 Apr 2012 18:55:53 +0100 From: Attilio Rao <attilio@freebsd.org> To: Arnaud Lacombe <lacombar@gmail.com> Cc: freebsd-performance@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Scheduler + IPC performance on FreeBSD 7.4, 8.2, 9.0 and -CURRENT Message-ID: <CAJ-FndAam4mK53sdUx9vB1mUZx8eKZPzd2y_Y-DH8oO0P9=ERA@mail.gmail.com> In-Reply-To: <CACqU3MV=2Whd2rWgnxzxehiRSqmi03j22U32c0gcvC%2B=zwzGKA@mail.gmail.com> References: <CACqU3MXOM1WOPkinxfs2YJmGbgx8-gAmUbK4L3epKPg6OpQXAw@mail.gmail.com> <CAJ-FndDFHaKBPozhkBd6DxGo6F4UCs=9YGg0uMpB_S8iJ8Om0w@mail.gmail.com> <CACqU3MV=2Whd2rWgnxzxehiRSqmi03j22U32c0gcvC%2B=zwzGKA@mail.gmail.com>
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Il 06 aprile 2012 18:54, Arnaud Lacombe <lacombar@gmail.com> ha scritto: > Hi, > > On Fri, Apr 6, 2012 at 10:58 AM, Attilio Rao <attilio@freebsd.org> wrote: >> Il 05 aprile 2012 19:03, Arnaud Lacombe <lacombar@gmail.com> ha scritto: >>> Hi folks, >>> >>> Over the past months, I ran on a couple of unused box the >>> `hackbench'[HACKBENCH] benchmark used by the Linux folks for tracking >>> down various kind of regression/improvement. `hackbench' is a >>> scheduler + IPC test (socket xor pipe). It creates producers/consumers >>> groups and let a variable quantity of small messages flow happily. >>> Producers and consumers are either processes xor threads. >>> >>> Tested platforms were >>> =C2=A0- Atom D510, Intel, (incomplete) >>> =C2=A0- Core 2 Quad Q9560, Intel >>> =C2=A0- Soekris net5501, AMD (incomplete) >>> =C2=A0- Xeon E5645, Intel (incomplete) >>> =C2=A0- Xeon E5620 (dual package), Intel >>> =C2=A0- Xeon E5-1650 (pending completion) >>> =C2=A0- Vortex86, DMP >>> >>> Tested kernel were: >>> =C2=A0- FreeBSD 7.4-RELEASE >>> =C2=A0- FreeBSD 8.2-RELEASE >>> =C2=A0- FreeBSD 9.0-RC3 and FreeBSD 9.0-RELEASE >>> =C2=A0- FreeBSD 10-CURRENT as of r231573 >> >> Which means you run 10-CURRENT with all the kernel debugging options >> on and MALLOC_DEBUG on? >> > I already answered that question. Namely: > > << > note: rule [I] is alleviated for -CURRENT kernels, which were built > with the same alteration made to GENERIC during the CURRENT->RELEASE > transition (ie. WITNESS and a couple of other option disabled). >>> > > this translates into the following patch (for amd64): Did you enable MALLOC_PRODUCTION and rebuilt libc? Attilio --=20 Peace can only be achieved by understanding - A. Einstein
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