Date: Tue, 31 Mar 1998 03:20:46 -0500 (EST) From: "John S. Dyson" <dyson@FreeBSD.ORG> To: grog@lemis.com (Greg Lehey) Cc: FreeBSD-current@FreeBSD.ORG Subject: Re: Corruption in security check output Message-ID: <199803310820.DAA01411@dyson.iquest.net> In-Reply-To: <19980331155832.03374@freebie.lemis.com> from Greg Lehey at "Mar 31, 98 03:58:32 pm"
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Greg Lehey said: > On Tue, 31 March 1998 at 1:22:43 -0500, John S. Dyson wrote: > >> On Tue, 31 March 1998 at 0:47:04 -0500, John S. Dyson wrote: > >> > >> vfs.ioopt's a new one for me. What is it? In any case, I haven't > >> changed anything for months. > > > > Zero-copy reads. > > Where do you set it? It looks like a sysctl variable, but I can't see > anything in the man pages, and sysctl doesn't seem to recognize it > either. > It is by default disabled for now, but earlier versions of -current kernels had it (the sysctl) enabled. I disabled the sysctl (except with a config option) so that people would not use it by mistake. When it is fully working, iozone should give >1G/sec. It actually overflows iozone on my machine now. There are still some minor problems, which should be fixed soon. -- John | Never try to teach a pig to sing, dyson@freebsd.org | it just makes you look stupid, jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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