Date: Sat, 4 Aug 2007 09:40:14 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-questions@freebsd.org Subject: Re: parformance patch? Message-ID: <20070804093853.F24954@wojtek.tensor.gdynia.pl> In-Reply-To: <20070803202757.GA68434@rot26.obsecurity.org> References: <20070803172639.F17414@wojtek.tensor.gdynia.pl> <20070803164621.GA65921@rot26.obsecurity.org> <20070803220027.C19191@wojtek.tensor.gdynia.pl> <20070803202757.GA68434@rot26.obsecurity.org>
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>> loaded servers for over a year with FreeBSD 6.2 > > Lucky you ;) Doesn't mean that parts of the kernel you're not using > can handle it. well - it exactly mean that it can :) >> better. >> >> >> patched vm_fault make pageins faster, but not pageout. disks often does >> write caching clustering pageouts anyway, but probably not that efficient. > > This is pageout, not pagein. Probably the negative effect is that the > when paging out the system does I/O in larger chunks, improving swap > throughput but increasing delays for other applications. actually i tested changing it to 64 it was positive improvement, but after shutting down kernel crashed.
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