Date: Sat, 30 May 2009 18:23:27 +0200 From: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> To: Attilio Rao <attilio@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: signifanctly slowdown of FreeBSD 8.0-CURRENT/amd64 Message-ID: <4A215D7F.7020807@mail.zedat.fu-berlin.de> In-Reply-To: <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> References: <4A2120D5.50300@mail.zedat.fu-berlin.de> <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com>
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Attilio Rao wrote: > 2009/5/30 O. Hartmann <ohartman@mail.zedat.fu-berlin.de>: > >> Hello. >> I realized a significant slowdown of FreeBSD 8.0-CURRENT/amd64 on every >> box I run. I have the most recent FreeBSD 8.0-CURRENT/amd64 with custom >> kernel and switched off every debugging. I see a drastic slowdown >> whenever heavy I/O on UFS2 and ZFS partitions is performed and whenever >> some compilation is done (compiling world and kernel). This is horrible >> on a single core Athlon64 CPU with 2GB RAM as well as on a 4 core Q6600 >> with 8GB and a server with 2 x 4-cores and 16GB RAM. >> >> I can not say clearly whether I/O is the bottleneck. Maybe something >> with the memory subsystem, when it comes to compiler runs, when no disk >> I/O is done but the box is still horrible slow. This behaviour occured >> several weeks ago, not being able to specify it more precisely. >> >> AQre there any issues at the moment? >> > > Your kernel is compiled from which date? > > Thanks, > Attilio > > > Most recent, say: yesterday! As well as world.
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