Date: Thu, 12 Nov 1998 13:07:59 -0500 (EST) From: Daniel Eischen <eischen@vigrid.com> To: luigi@labinfo.iet.unipi.it, s0k9955@unix.tamu.edu Cc: freebsd-hackers@FreeBSD.ORG, mike@smith.net.au, shafiak@ee.tamu.edu Subject: Re: Timer Granularity Message-ID: <199811121807.NAA17224@pcnet1.pcnet.com>
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> > I need a kernel clock of granularity 1ms or less, for some experiments. > > Which version of FreeBsd supports this granularity, other than the 3.0 > > version? > > > > There is a mention of the resolution depending on the clock > > sources in use. Which source gives me the best resolution?? > > settin HZ=1000 or more in the kernel config file should do the job (if > you go too high you might start losing ticks...) > > luigi I set HZ to 500 just a couple of days ago on a 1-2 month old -current system without too many hiccups. There still are a few places in the kernel that need to be fixed to use hz properly, though. sysbeep is one. Grep'ing for all the timeout()s and ensuring proper use of hz is a start. Dan Eischen eischen@vigrid.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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