Date: Wed, 07 Mar 2001 20:41:49 +0200 From: Mark Murray <mark@grondar.za> To: Matt Dillon <dillon@earth.backplane.com> Cc: Bruce Evans <bde@zeta.org.au>, Maxim Sobolev <sobomax@FreeBSD.ORG>, dougb@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: harvest_interrupt=YES slows down machine Message-ID: <200103071840.f27IetR60520@gratis.grondar.za> In-Reply-To: <200103071732.f27HWou70340@earth.backplane.com> ; from Matt Dillon <dillon@earth.backplane.com> "Wed, 07 Mar 2001 09:32:50 PST." References: <200103071732.f27HWou70340@earth.backplane.com>
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> I think it would be a much better idea to cap the number of interrupts > per second the reseeder accepts. e.g. have a sysctl to set the > max and default it to something reasonable, like 200. The seeder would > thus only run 200 times a second even if A person were getting > 7750 interrupts/sec. Frankly, once we have a good random seed it would > only take about 10 interrupts a second to keep the random number > generator in good shape, and possibly even less. Overkill is not > necessary. This effectively happens. The harvest ring is a limited length, and any overflows are discarded. M -- Mark Murray Warning: this .sig is umop ap!sdn To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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