Date: Sun, 19 Apr 1998 20:17:04 +0300 From: Antti-Pekka Liedes <apl@mail.cs.hut.fi> To: questions@FreeBSD.ORG Subject: two AHA-2940 controllers: horrible performance Message-ID: <19980419201704.55876@hutcs.cs.hut.fi>
next in thread | raw e-mail | index | archive | help
I just tried two Adaptec AHA-2940 SCSI controllers on a ppro 180 box running 2.2.6-stable from today. The first controller that has always been used in the machine worked as before, no problems, but the second controller had huge performance problems. I tried a lone Sony SDT-7000 tape drive and a lone old IBM 0662 disk in the second controller, neither could transfer more than maybe few kB/s, being practically unusable. I got some "Timedout SCB handled by another timeout" messages. At least the tape drive has been working just a few days ago in my home box, a dual pentium with AHA-3940 controller. Here's parts of dmesg: ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 15 on pci0:17:0 ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs ahc0 waiting for scsi devices to settle (ahc0:1:0): "IBM DCAS-34330W S65A" type 0 fixed SCSI 2 sd0(ahc0:1:0): Direct-Access 4134MB (8467200 512 byte sectors) (ahc0:2:0): "IBM DCAS-34330W S65A" type 0 fixed SCSI 2 sd1(ahc0:2:0): Direct-Access 4134MB (8467200 512 byte sectors) ... ahc1 <Adaptec 2940 SCSI host adapter> rev 0 int a irq 15 on pci0:20:0 ahc1: aic7870 Single Channel, SCSI Id=7, 16 SCBs ahc1 waiting for scsi devices to settle (ahc1:5:0): "SONY SDT-7000 0150" type 1 removable SCSI 2 st0(ahc1:5:0): Sequential-Access density code 0x13, 512-byte blocks, write-enabled any ideas? -- Antti-Pekka Liedes * apl@IRC * There's no sign of the JMT 6 B 406 * apl@iki.fi * morning coming, you've been 02150 ESPOO * +358 - 9 - 468 3121 * left on your own, like FINLAND * +358 - 40 - 5873 593 * a rainbow in the dark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19980419201704.55876>