Date: Thu, 10 Feb 2005 12:26:30 +0300 From: dima <_pppp@mail.ru> To: Thomas Hurst <tom.hurst@clara.net> Cc: freebsd-stable@freebsd.org Subject: Re[2]: interrupt routing Message-ID: <E1CzAak-0004Cc-00._pppp-mail-ru@f13.mail.ru> In-Reply-To: <20050209174743.GA81628@voi.aagh.net>
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>> Ah, so they are all on the same bus. Yuck, performance is going to be >> sucky. Bad Tyan, no cookie. That'll also explain the limited number >> of interrupts available. I don't think there's anything we can do to >> help the situation, sadly. > > Buy a PCI-X SCSI/GigE card, and use that instead of the on-board one? > Neither of our S288[12]'s are sharing any IRQ's; we're using Adaptec > 2120S RAID cards, and they have a bus and IRQ to themselves. Thanks for your suggestion; I will think about purchasing a NIC. > MySQL performance still sucks on our FreeBSD machine, but that's an OS > problem; the hardware looks fine to me. If you have suggestions for a > better dual Opteron motherboard I'm all ears :) I didnt have a chance to try MSI stuff yet; it contains a single channel SCSI onboard though. Its not that good for future HD expansion in my deployment. I set up 4 drives (60MB/s*4 is quite ok for a SCSI-320) for database now and directed the 2nd SCSI channel to the backplane.
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