Date: Thu, 4 Apr 2002 11:50:30 -0500 From: George Georgalis <george@galis.org> To: Kenneth Culver <culverk@alpha.yumyumyum.org> Cc: George Georgalis <george@galis.org>, Kevin Stevens <Kevin_Stevens@pursued-with.net>, Nick Lozinsky <nl3481@wi.rr.com>, questions@FreeBSD.ORG Subject: Re: EIDE drive performance improvements Message-ID: <20020404115030.B10503@trot.haven.dom> In-Reply-To: <20020401162402.K40027-100000@alpha.yumyumyum.org>; from culverk@alpha.yumyumyum.org on Mon, Apr 01, 2002 at 04:28:52PM -0500 References: <20020401120222.G23357@trot.haven.dom> <20020401162402.K40027-100000@alpha.yumyumyum.org>
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Well, it looks pretty much the same as yours... root@fait:~/ $ sysctl -a | grep hw.ata hw.ata.ata_dma: 1 hw.ata.wc: 1 hw.ata.tags: 0 hw.ata.atapi_dma: 0 hw.atamodes: dma,---,---,---, (There's no cdrom on this laptop) I added hw.ata.tags=1 to /boot/loader.conf and will try a reboot momentarily, can I get around the reboot? If it doesn't boot, how can I fix it? As for 80-conductor cable on my drive, I don't know and won't be opening my laptop to find out... how could the OS tell how many conductors anyway? it's still 40 pin on each side right? The laptop was advertised as having a 100mhz bus and, not sure 66 or 100 DMA so I expect it has the 80 conductor cable. Humm, dmesg identifies an ata33 controler... I _was_ able to speed things up under linux, whether they are the same speed now, not sure. atapci0: <Intel PIIX4 ATA33 controller> port 0xfcb0-0xfcbf at device 7.1 on pci0 ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master UDMA33 // George On Mon, Apr 01, 2002 at 04:28:52PM -0500, Kenneth Culver wrote: >There's no real way to force it, FreeBSD by default chooses the fastest >safe settings for a drive. if that is an IBM you might be able to turn on >tagged queueing, which should speed things up however... > >hw.ata.ata_dma: 1 >hw.ata.wc: 1 >hw.ata.tags: 0 >hw.ata.atapi_dma: 1 > >these are the sysctl options that you can change from /boot/loader.conf. > >if you do a sysctl hw.ata it should display these values. Make sure that >hw.ata.wc is set to 1 (although this can sometimes be risky) and if you >think your drive supports tagged queueing you can turn that on too, to do >this just add the line > >hw.ata.tags=1 to /boot/loader.conf > >And you still didn't answer my question about having the 80-conductor >cable. Also, if you have that ibm drive hooked to the same cable as an >ata33 drive, the IBM will not go any faster than ata33. > >Ken > >On Mon, 1 Apr 2002, George Georgalis wrote: > >> re: using 80 wire cables, not sure. it's a sony laptop PCG505LS >> >> ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master UDMA33 >> >> I did minimal experimentation under Linux but this line helped speed things up a lot >> hdparm -c3 -m16 /dev/hda >> >> I do a fair amount of disk thrashing stuff and don't recall any problems. Can I force faster settings under FreeBSD? >> >> // George >> >> On Sun, Mar 31, 2002 at 11:18:41PM -0500, Kenneth Culver wrote: >> >Are you using 80 wire cables? FreeBSD won't set it up in anything higher >> >than UDMA33 if you aren't. >> > >> >Ken >> > >> >On Sun, 31 Mar 2002, George Georgalis wrote: >> > >> >> On Thu, Mar 28, 2002 at 12:55:13PM -0500, Kenneth Culver wrote: >> >> >yeah, or just type dmesg, drive configuration will be at the end of a >> >> >dmesg command >> >> > >> >> >Ken >> >> > >> >> >On Thu, 28 Mar 2002, Kevin Stevens wrote: >> >> > >> >> >> >> >> >> >> >> >> On Thu, 28 Mar 2002, Kenneth Culver wrote: >> >> >> >> >> >> > No, the driver automatically enables the fastest modes and such. >> >> >> > >> >> >> > Ken >> >> >> >> >> >> And you can check in /var/run/dmesg.boot to see what mode got configured. >> >> >> >> >> >> KeS >> >> >> >> I've been wondering about this... and it doesn't look is if it was probed correctly... >> >> >> >> ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master UDMA33 >> >> >> >> I set it faster under linux, what's up? >> >> >> >> // George >> >> >> >> >> >> -- >> >> GEORGE GEORGALIS, System Admin/Architect cell: 347-451-8229 >> >> Security Services, Web, Mail, mailto:george@galis.org >> >> File, Print, DB and DNS Servers. http://www.galis.org/george >> >> >> >> >> > >> >> -- >> GEORGE GEORGALIS, System Admin/Architect cell: 347-451-8229 >> Security Services, Web, Mail, mailto:george@galis.org >> File, Print, DB and DNS Servers. http://www.galis.org/george >> >> > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message > -- GEORGE GEORGALIS, System Admin/Architect cell: 347-451-8229 Security Services, Web, Mail, mailto:george@galis.org File, Print, DB and DNS Servers. http://www.galis.org/george To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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