Date: Wed, 29 Jan 1997 15:54:33 -0800 From: Julian Elischer <julian@whistle.com> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: Simon Shapiro <Shimon@i-Connect.Net>, hackers@freebsd.org Subject: Re: More 2.2-BETA goodies... Message-ID: <32EFE339.31DFF4F5@whistle.com> References: <XFMail.970129120959.Shimon@i-Connect.Net> <Mutt.19970129220350.j@uriah.heep.sax.de>
next in thread | previous in thread | raw e-mail | index | archive | help
J Wunsch wrote: > > As Simon Shapiro wrote: > > > Shortcut: umount /devs > > Known sucker. DEVFS is really not yet ready for the masses. (Alas.) damm! I tought I fixed that! oh well hpefully I'll get back to it again.. > > > 5. Question: Using xperfmon++ (cool), one observes that a system equipped > > with AHA2940W enjoys about 3-15 times as many interrupts/sec as disk > > transfers/sec. The system, does nothing but SCSI right now (cvs > > checkout in parallel with a tape backup (cpio, I know...). > > Nothing else. > > > > Discounting > > 100 interrupts for the heartbeat, ... > > You have to discount 100 + 128 interrupts per second, there are two > clocks. If you're using pcaudio, this increases to 100 + 1024 while > pcaudio is running. actually thats 16000 for pcaudio it interrupts twice per audio sample :) > > xperfmon++ has a tendency to not become adapted to more recent changes > very quickly (guess whom you should blame for this :-). systat > -vmstat might be more authoritative in its data (and also gives you a > split view for the various interrupt sources). julian
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?32EFE339.31DFF4F5>