Date: Mon, 12 Mar 2001 18:40:34 +0200 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Mark Murray <mark@grondar.za>, current@FreeBSD.org Subject: Re: Ethernet entropy harvesting seriously pessimizes performance Message-ID: <3AACFC01.87F2FF5C@FreeBSD.org> References: <3AAC8942.DB660B2C@FreeBSD.org> <200103120858.f2C8wkf88680@gratis.grondar.za> <3AAC9266.1CBB23E9@FreeBSD.org>
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Maxim Sobolev wrote: > Mark Murray wrote: > > > > In addition to reported earlier general machine slowdown with > > > interrupt harvesting is turning on, ethernet entropy harvesting > > > seriously hammers network performance as well. Ftping big file over my > > > 10M network now about 15% slower with ethernet harvesting turning on. > > > > Even with the Rijndael code and kern.random.sys.burst=$SMALLNUMBER ?? > > I've not tried Rijndael code yet, do you think that it could make a noticeable > difference? As for kern.random.sys.burst=$SMALLNUMBER I think that it is your > task to tune defaults in such a way that it would not disturb even low-profile > users (i.e. would not cause any measureable performance degradation). Tuning > defaults with power users in mind is extremly bad idea - we are not an OS with > mininal configuration PIII-500/128MB. Have to admit that after updating my kernel all these and several other harvester-related problems are gone. Now there is no measureable difference in performance with harvesting turning on and off and mouse moves smothly without usual patch for scmouse.c. ;) Finally I can thank you for a good work Mark! -Maxim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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