Date: Wed, 10 Dec 2003 17:30:02 +0100 From: amon@sockar.homeip.net To: freebsd-scsi@freebsd.org Subject: Performance problem with adaptec 2120S Message-ID: <20031210173002.B206@ra.aabs>
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hi, I have a problem with my new adaptec 2120S, I cannot get more than 3 MB/s when writing to it. My card has firmware 4.0-0[6008] and is connected to an sca backplane with 3 ultra 160 disks on it, all in a single RAID 5 volume. The card is plugged in a 32 bits/33 Mhz pci slot and the installed freebsd version is 4.9-R. When I do a file transfer from another box, I see in systat that aac0 is 100% busy at 3MB/s during the copy. Since this card is U320, I sincerely hope it can do better but I couldn't find the source of the problem. I tried setting all devices at 160MB/s non packetized in the controller config with no luck. Same thing with other disks. Is this a known issue ? I can provide full dmesg if necessary. -- Herve Boulouis
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