Date: Thu, 28 Oct 1999 13:31:29 -0700 From: GVB <gvbmail@tns.net> To: Greg Lehey <grog@lemis.com> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: question regarding IO Message-ID: <4.2.1.19991028132501.01748238@mail.tns.net> In-Reply-To: <19991028143848.50705@mojave.worldwide.lemis.com> References: <4.2.1.19991028113702.017dfed0@mail.tns.net> <4.2.1.19991025143751.017b2af0@abused.com> <4.2.1.19991025143751.017b2af0@abused.com> <19991026222942.39556@mojave.worldwide.lemis.com> <4.2.1.19991028113702.017dfed0@mail.tns.net>
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To answer your original question of my dmesg output for my hardware, it is as follows; dpt0: <DPT Caching SCSI RAID Controller> rev 0x02 int a irq 12 on pci0.10.0 dpt0: DPT PM2144UW FW Rev. 07M1, 1 channel, 64 CCBs da0 at dpt0 bus 0 target 0 lun 0 da0: <IBM DDRS-34560W S92A> Fixed Direct Access SCSI-2 device da0: Tagged Queueing Enabled da0: 4357MB (8924999 512 byte sectors: 255H 63S/T 555C) da1 at dpt0 bus 0 target 1 lun 0 da1: <IBM DDRS-34560W S92A> Fixed Direct Access SCSI-2 device da1: Tagged Queueing Enabled da1: 4357MB (8924999 512 byte sectors: 255H 63S/T 555C) da2 at dpt0 bus 0 target 2 lun 0 da2: <DPT MAIL RAID 07M1> Fixed Direct Access SCSI-2 device da2: 17365MB (35565440 512 byte sectors: 255H 63S/T 2213C) da0 is my OS disk, da1 is a spare disk (doing nothing right now.. have not established the mirror yet..) and da2 is partioned into /var/mail and /var/spool/mqueue. thanks. GVB At 02:38 PM 10/28/1999 -0400, Greg Lehey wrote: >[Format recovered--see http://www.lemis.com/email/email-format.html] > >On Thursday, 28 October 1999 at 11:38:08 -0700, GVB wrote: > > At 10:29 PM 10/26/1999 -0400, you wrote: > >> When replying to this message, please copy the original recipients. > >> For more information, see http://www.lemis.com/questions.html > >> > >> On Monday, 25 October 1999 at 14:48:01 -0700, GVB wrote: > >>> I am running a small ISP 100% on FreeBSD. I wanted to add a level of > >>> redundancy to our mail server so I purchased the Raidstation3 kit > from DPT > >>> which includes an external 3 bay drive enclosure and a PCI raid > >>> controller. I populated the controller with 64 megs of ram and > popped in 3 > >>> Ultra2 10,000rpm Seagate Cheetah drives. I built the raid and > mounted the > >>> two partitions as /var/mail and /var/spool/mail. I now get strange > >>> unresponsive timeouts from the machine at random times.. this is what > >>> iostat looks like when the machine is unresponsive, sometimes up to 10 > >>> seconds at a time. This was not happening before installing this RAID so > >>> it leads me to believe that the file system is the problem. > >>> > >>> tty da0 da1 da2 > >> cpu > >>> tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni > sy in id > >>> 0 76 0.00 0 0.00 0.00 0 0.00 64.00 1 0.06 5 0 > 1 15 79 > >>> > >>> What does the KB/t mean, > >> > >> It's the average size of the transfers. FreeBSD is limited to 128 > >> kB/t, but in practice never goes beyond 64 kB. > >> > >>> it seems that it never gets past 64 and when it hits 64 the machine > >>> becomes unresponsive. > >> > >> This might be a DPT problem. > >> > >>> Any suggestions or pointers would be appreciated. > >> > >> What are the *relevant* lines of your dmesg output? What kind of DPT > >> controller do you have? It may be that it's not handling 64 kB > >> transfers correctly. > > > > Hey, I really appreciate the help.. just had a quick question regarding > > dmesg. Is there a way to get the original bootup/hardware scan information > > from dmesg without rebooting? > >Yes. I suppose I should add this to the FAQ. It's stored in > /var/run/dmesg.boot. > > > Seems my dmesg buffer has filled up with other things (ARP > > conflicts, core dumps, etc..). > >Yup, that happens. > >Greg >-- >When replying to this message, please copy the original recipients. >For more information, see http://www.lemis.com/questions.html >When replying to this message, please take care not to mutilate the >original text. >For more information, see http://www.lemis.com/email.html >Finger grog@lemis.com for PGP public key >See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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