Date: Sun, 22 Aug 1999 17:38:28 +1000 From: Bruce Evans <bde@zeta.org.au> To: ben@scientia.demon.co.uk, gjb-freebsd@gba.oz.au Cc: freebsd-security@FreeBSD.ORG Subject: Re: Securelevel 3 ant setting time Message-ID: <199908220738.RAA28514@godzilla.zeta.org.au>
next in thread | raw e-mail | index | archive | help
>> If you happen to have a machine that needs its regular tweaks by >> ntpdate to exceed half a second, then you can adjust the kernel >> tick a few units either side of its default setting of 10000 so >> that things stay relatively stable. > >Where should I change this? I tried changing the value in You shouldn't. The kernel variable `tick' is not used for timekeeping in FreeBSD. It is only used for determining select timeouts and related low precision things. >/sys/conf/param.c (after copying it to the compile directory) and >it seems to have had no effect. I changed it to 9997, I calculated Change the frequency of active timecounter to closer to its actual frequency using `sysctl -w ...'. The hardware timecounters and their frequencies can be found using `sysctl -a | grep _freq'. The currently active timecounter can be found and changed in -current only using `sysctl [-w] kern.timecounter.hardware'. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199908220738.RAA28514>