Date: Fri, 28 Feb 2003 15:38:20 +0000 From: Bruce Cran <bruce@cran.org.uk> To: current@freebsd.org Subject: Re: High % interrupt when building world Message-ID: <20030228153820.GA3020@fourtytwo.brucec.backnet> In-Reply-To: <20030228150615.GA2816@fourtytwo.brucec.backnet> References: <20030228122151.55902.qmail@web11408.mail.yahoo.com> <20030228150615.GA2816@fourtytwo.brucec.backnet>
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On Fri, Feb 28, 2003 at 03:06:15PM +0000, Bruce Cran wrote: > On Fri, Feb 28, 2003 at 04:21:51AM -0800, Shizuka Kudo wrote: > > I recently cvsup-ped -current (I believe it was 27 Feb), and noticed that the system was not > > responsive as before when building world. Looking at the output of "top" showed a 30-60% interrupt > > usage. I believed it is related to my highpoint 370 card running at raid 1. I detached the cards > > and attached one of the drives to ata0 (Intel i815EP) and ran buildworld again. The % shown was > > much less (less than 10%). Has Anyone else seen such an issue? > > > > I also reverted the src/sys to Feb 24 UTC which was just before sos' commits on the new API. The > > problem also went away and the "top" % interrupt was at around 1-2% range. > > > > I've also seen very poor performance on my Promise FastTrak TX2 'Lite' controller on my A7V333 > motherboard. I get 3-5MB/sec, and copying files takes a very long time. When I move it back > to the 'normal' ata controller the speed goes up to the more normal 40-45MB/sec. Both controllers > detect and use ATA100. I'm running 5.0-RELEASE-p3. Have the recent ata patches maybe sorted this? > > >dd if=/dev/zero of=myfile bs=1024k count=100 > 100+0 records in > 100+0 records out > 104857600 bytes transferred in 31.741188 secs (3303518 bytes/sec) > > dmesg output: > > atapci0: <Promise TX2 ATA133 controller> port 0xb400-0xb40f,0xb800-0xb803,0xd000-0xd007,0xd400-0xd403,0xd800-0xd807 mem 0xd4800000-0xd4803fff irq 6 at device 6.0 on pci0 > atapci1: <VIA 8233 ATA133 controller> port 0x9400-0x940f at device 17.1 on pci0 > > ad0: 76219 <WDC WD800BB-00CAA1> [155061/16/63] at ata0-master UDMA100 (using motherboard IDE) > ar0: 58644MB <ATA RAID0 array> [7476/255/63] status: READY subdisks (using FastTrak controller) > Just to add to this, when I run the above 'dd' command, I see top reporting 35-40% interrupt usage on the drive on the RAID controller, while it's 3-5% for the drive on the VIA controller, and the drive itself is: 0 READY ad4: 58644MB <IC35L060AVER07-0> [119150/16/63] at ata2-master UDMA100 Bruce Cran To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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