Date: Thu, 29 Nov 2007 19:58:39 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Pete French <petefrench@ticketswitch.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Also seeing 2 x quad-core system slower that 2 x dual core Message-ID: <474F0BDF.8070605@FreeBSD.org> In-Reply-To: <E1IxklH-000ElU-3w@dilbert.ticketswitch.com> References: <E1IxklH-000ElU-3w@dilbert.ticketswitch.com>
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Pete French wrote: > I think I also just came up against the same effect that the original poster > saw. I have two sets of machines here - one is a pair of dual core Xeons, > the other a pair of quad core Xeons. They are HP servers, more or less > identical apart from the processors I belive. > > Both have 7.0-BETA3 installed, and the same config on them with the > same files. I am trying to delete a gigabyte of files using 'rm -rf' > > On the dual core processors this takes about 20 seconds. On the quad > cores it takes about 3 minutes! This is true for both the 32 and 64 bit > versions of FreeBSD :-( That almost certainly has nothing to do with how many CPUs your system has, since rm -rf is a single process running on a single core. Kris
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