Date: Fri, 3 Oct 2008 17:06:11 +0200 From: Pieter de Goeje <pdegoeje@service2media.com> To: freebsd-stable@freebsd.org Cc: Bartosz Stec <admin@kkip.pl> Subject: Re: fxp performance with POLLING Message-ID: <200810031706.11941.pdegoeje@service2media.com> In-Reply-To: <48E62ABA.6070901@kkip.pl> References: <48E62ABA.6070901@kkip.pl>
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On Friday 03 October 2008, Bartosz Stec wrote: > Hello again :) > > With POLLING enabled I experience about 10%-25% performance drop when > copying files over network. Tested with both SAMBA and NFS. Is it normal? Yes. You don't want to use polling unless you set kern.hz to 10000 or something in that range. If you have a NIC with interrupt moderation, polling should almost never be necessary. Note that polling can still be useful for routers, because it allows you to have a much more responsive system even when handling heavy network traffic. -- Pieter de Goeje
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