Date: Thu, 3 Apr 2003 16:15:33 -0800 From: "Golliher, Blake" <blakeg@netapp.com> To: <AIC7xxx@freebsd.org> Subject: Adaptech 39160 but only 20mhz? Message-ID: <D23EC278EFAEC74FB7614F39E080009430C37C@svlexc05.corp.netapp.com>
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Hi all!
This seems strange to me, but maybe one of ya'll have seen it. These =
drives are from an old netapp box, hence the odd drive vendor.
from /var/log/dmesg
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8
<Adaptec 3960D Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel B, SCSI Id=3D7, 32/253 SCBs
scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8
<Adaptec 3960D Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel A, SCSI Id=3D7, 32/253 SCBs
blk: queue c3609a14, I/O limit 4095Mb (mask 0xffffffff)
Vendor: NETAPP Model: X245_HJURD036S10 Rev: NA01
Type: Direct-Access ANSI SCSI revision: 03
blk: queue c3609c14, I/O limit 4095Mb (mask 0xffffffff)
Vendor: NETAPP Model: X245_HJURD036S10 Rev: NA01
Type: Direct-Access ANSI SCSI revision: 03
blk: queue c1f22014, I/O limit 4095Mb (mask 0xffffffff)
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
scsi0:A:1:0: Tagged Queuing enabled. Depth 253
blk: queue c1f22014, I/O limit 4095Mb (mask 0xffffffff)
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0
(scsi0:A:0): 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
SCSI device sda: 72205440 512-byte hdwr sectors (36969 MB)
Partition check:
sda: sda1 sda2 sda3 sda4 < sda5 >
(scsi0:A:1): 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
SCSI device sdb: 72205440 512-byte hdwr sectors (36969 MB)
sdb: sdb1 sdb2
from cat /proc/scsi/aic7xxx/0=20
Adaptec AIC7xxx driver version: 6.2.8
aic7899: Ultra160 Wide Channel B, SCSI Id=3D7, 32/253 SCBs
Serial EEPROM:
0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a=20
0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a 0xc33a=20
0xb8f4 0x7d5d 0x2807 0x0010 0xffff 0xffff 0xffff 0xffff=20
0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0x0250 0x944e=20
Channel A Target 0 Negotiation Settings
User: 160.000MB/s transfers (80.000MHz DT, offset 255, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
Channel A Target 0 Lun 0 Settings
Commands Queued 3252687
Commands Active 0
Command Openings 110
Max Tagged Openings 110
Device Queue Frozen Count 0
Channel A Target 1 Negotiation Settings
User: 160.000MB/s transfers (80.000MHz DT, offset 255, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, offset 101, 16bit)
Channel A Target 1 Lun 0 Settings
Commands Queued 16397
Commands Active 0
Command Openings 110
Max Tagged Openings 110
Device Queue Frozen Count 0
And, as expected, my performance isn't the greatest.
[root@cuda scsi]# hdparm -tT /dev/sdb1=20
/dev/sdb1:
Timing buffer-cache reads: 128 MB in 1.22 seconds =3D104.69 MB/sec
Timing buffered disk reads: 64 MB in 2.49 seconds =3D 25.70 MB/sec
[root@cuda scsi]#=20
So my question is, what kind of performance should I be expecting? And =
is there anything I can do to fix this performance problem? These are =
Hitachi JuraD disks at 10k rpm.
Blake
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