Date: Fri, 17 Apr 1998 07:57:13 -0700 From: Mike Smith <mike@smith.net.au> To: Mathias Picker <mathiasp@virtual-earth.de> Cc: gpalmer@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: FreeBSD and Sendmail Message-ID: <199804171457.HAA00724@antipodes.cdrom.com> In-Reply-To: Your message of "Fri, 17 Apr 1998 16:53:24 %2B0200." <199804171453.QAA02036@mp.virtual-earth.de>
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> > The vmstat display basically shows the same ammount of info about > > the disks that iostat does, just differently. Stuff not available: > > > > - Number of queued tagged commands (if supported). This could give > > a rough indication of if the drive was busy or not. > > > > - Average seek time. The number of transactions/second (or seeks/sec) > > Try using the msps option in systat -i ?? The manpage says: > msps Toggle the display of average seek time (the de- > fault is to not display seek times). > > I don't know if it's correct, but it does show some numbers :) Most of the disk-related stats are partially or completely bogus. The CAM code has some new disk statistics gathering, which slightly less bogus. Gathering meaningful numbers is quite difficult. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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