Date: Wed, 21 Nov 2001 00:44:14 -0800 (PST) From: John Engelhart <johne@zang.com> To: freebsd-questions@freebsd.org Subject: Performance problems with Adaptec 3210S controller in 4.4 Message-ID: <Pine.GSO.4.21.0111210029370.24545-100000@zang.com>
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Hello, I've just finished installing and migrating over to a new Adaptec 3210S controller card and I have to say, the performance is totally uninspiring. So uninspirining that clearly I have done something wrong. Setup: Tyan Tiger MP 2460 w/ dual MP 1800's MB PCI is 64bit/33MHz 1 gig ram 1 Adaptec 3210S controller 8 Seagate ST318452LW (the zippy fast 15K RPM ones) 4 to each channel RAID 0+5, 4 drives on channel A on RAID5 #1, ditto on B 64Kbyte stripe size Write-Back config (no battery back up yet, shipped wrong one) 128Meg cache 1 NetGear GA622T card 1 J-Random NVidia AGP card 1 IDE CDROM 1 IDE 60 gig drive Running 4.4 By all accounts, the RAID set up should be pretty darn quick. The PCI bus should be the limit, at around 250MB/sec. However, I'm lucky to see 30MB/s (as measured by iostat) off the thing. It's only slightly faster than the IDE drive. So... What am I doing wrong, here? newfs not done right (for starters, I did just a plain jane newfs).. RAID set up wrong? Expectations wrong? Heck, just one of those segate drives has a minimum sustained transfer of over 45MB/sec. Any thoughts/pointers/etc appreciated. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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