Nyug: Adaptec ASC-29320A U320

Sziasztok,

Van nekem egy ilyen vezerlom: Adaptec ASC-29320A U320
Az lspci ezt mondja:
0000:01:09.0 SCSI storage controller: Adaptec ASC-29320A U320 (rev 10)
Subsystem: Adaptec: Unknown device 0060
Flags: bus master, 66MHz, slow devsel, latency 72, IRQ 225
I/O ports at 2400 [disabled] [=256]
Memory at d4104000 (64-bit, non-prefetchable) [=8K]
I/O ports at 2000 [disabled] [=256]
Expansion ROM at 88000000 [disabled] [=512K]
Capabilities: [dc] Power Management version 2
Capabilities: [a0] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable-
Capabilities: [94] PCI-X non-bridge device.

A kovetkezo a problemam...
van ezen nekem 4db 146GB-os SCSI diszk es kicsit lassunak tunik, jol megy meg minden, de megis lassunak tunik picit...

cat /proc/scsi/aic79xx/0 ezt mondja (a lenyeget vagom ki)

Target 1 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, 16bit)
Channel A Target 1 Lun 0 Settings
Commands Queued 5258022
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
Target 2 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, 16bit)
Channel A Target 2 Lun 0 Settings
Commands Queued 5328175
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
Target 3 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, 16bit)
Channel A Target 3 Lun 0 Settings
Commands Queued 4088190
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
Target 4 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit)
Goal: 20.000MB/s transfers (20.000MHz)
Curr: 20.000MB/s transfers (20.000MHz)
Channel A Target 4 Lun 0 Settings
Commands Queued 4131396
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0

Ami elso re nem tunt fel, az az hogy a 4-es target Goal / Curr erteke az 20.000MB/sec miert van ez szerintetek?

A vezerlo egyik csatornajara van rakotve mind a 4db diszk....

szerintetek mi lehet a gond?

Miert erzem lassunak? azert mert a "hdparm -tT /dev/md0 /dev/md0 /dev/md0" kovetkezo ertekeket adja:

/dev/md0:
Timing cached reads: 2968 MB in 2.00 seconds = 1483.91 MB/sec
Timing buffered disk reads: 100 MB in 3.03 seconds = 33.02 MB/sec

/dev/md0:
Timing cached reads: 2928 MB in 2.00 seconds = 1463.91 MB/sec
Timing buffered disk reads: 94 MB in 3.01 seconds = 31.21 MB/sec

/dev/md0:
Timing cached reads: 2948 MB in 2.00 seconds = 1473.91 MB/sec
Timing buffered disk reads: 104 MB in 3.00 seconds = 34.62 MB/sec

meg egy IDE disz es szoftveres RAID eseteben is 50-60MB/sec szokott lenni a Timing buffered disk reads....

amugy igy nez ki a setup, ha a szervezesben lenne esetleg valami....
cat /proc/mdstat

md1 : active raid1 sdd1[1] sdc1[0]
14651136 blocks [2/2] [UU]

md2 : active raid5 sdd2[3] sdc2[2] sdb2[1] sda2[0]
385246464 blocks level 5, 64k chunk, algorithm 0 [4/4] [UUUU]

md0 : active raid1 sdb1[1] sda1[0]
14651136 blocks [2/2] [UU]

Minden hozzaszolast, otletet elore is koszonok...Ha esetleg tudnatok valami parancssori utility-t ajnalani, amivel a diszk backend teljesitmenyet le lehetne merni azt is nagyon megkoszonnem...

Udv,
Istvan