Date: Sat, 30 May 2009 17:48:21 +0200 From: Attilio Rao <attilio@freebsd.org> To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Cc: freebsd-current@freebsd.org Subject: Re: signifanctly slowdown of FreeBSD 8.0-CURRENT/amd64 Message-ID: <3bbf2fe10905300848s6342a7b1l32340baee8e7e8f1@mail.gmail.com> In-Reply-To: <4A2120D5.50300@mail.zedat.fu-berlin.de> References: <4A2120D5.50300@mail.zedat.fu-berlin.de>
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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 -- Peace can only be achieved by understanding - A. Einstein
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