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Date: 18 Apr 2003 15:44:50 +0300
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cc: freebsd-performance@freebsd.org
Subject: aic7892 trouble
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Hi folks,

I have Adaptec U160 Host-Adapter with 2x Atlas 10k disks.When i copy
large files (~700MB) then performance is pretty bad.I got only about
35MB/sec between those 2 disks.Theres no difference 4.x or 5 -current.
I made couple of custom kernels with different options but no luck.
Could that be related with bad cable issue?

Thanks in advance.

ahc0: <Adaptec 19160B Ultra160 SCSI adapter> port 0xa000-0xa0ff mem
0xe2024000-0xe2024fff irq 11 at device 9.0 on pci0
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

da0 at ahc0 bus 0 target 0 lun 0
da0: <QUANTUM ATLAS10K3_18_WLS 020W> Fixed Direct Access SCSI-3 device 
da0: 160.000MB/s transfers (80.000MHz, offset 127, 16bit), Tagged
Queueing Enabled
da0: 17537MB (35916548 512 byte sectors: 255H 63S/T 2235C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <QUANTUM ATLAS10K3_18_WLS 020W> Fixed Direct Access SCSI-3 device 
da1: 160.000MB/s transfers (80.000MHz, offset 127, 16bit), Tagged
Queueing Enabled
da1: 17537MB (35916548 512 byte sectors: 255H 63S/T 2235C)