From: Grigory Fateyev <greg@anastasia.ru>
To: community@altlinux.ru <community@altlinux.ru>
Subject: [Comm] aic79xx slow transfer
Date: Sun, 27 Mar 2005 13:05:26 -0000
Message-ID: <20050302170345.0fd2a410@home.greg.com.ru> (raw)
Здравствуйте!
Есть Intel сервер со встроенным контроллером:
aic79xx 212584 6 (autoclean)
scsi_mod 97908 2 (autoclean) [sd_mod aic79xx]
0000:03:04.0 SCSI storage controller: Adaptec AIC-7902 U320 (rev 03)
0000:03:04.1 SCSI storage controller: Adaptec AIC-7902 U320 (rev 03)
> lspci -s 03:04.0 -vv [16:55:02]0|0.00
0000:03:04.0 SCSI storage controller: Adaptec AIC-7902 U320 (rev 03)
Subsystem: Intel Corp.: Unknown device 3424
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV+ VGASnoop-
ParErr- Stepping- SERR+ FastB2B- Status: Cap+ 66MHz+ UDF-
FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (10000ns min, 6250ns max), Cache Line Size: 0x08 (32
bytes) Interrupt: pin A routed to IRQ 30
Region 0: I/O ports at 2800 [size=256]
Region 1: Memory at fe9e0000 (64-bit, non-prefetchable)
[disabled] [size=8K] Region 3: I/O ports at 2c00 [size=256]
Expansion ROM at fe880000 [disabled] [size=512K]
Capabilities: <available only to root>
и в то-же время:
Adaptec AIC79xx driver version: 1.3.10
Adaptec AIC7902 Ultra320 SCSI adapter
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
Allocated SCBs: 64, SG List Length: 102
Serial EEPROM:
0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8
0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8
0x08f4 0x0146 0x2807 0x0010 0xffff 0xffff 0xffff 0xffff
0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0x0430 0xb2f7
Target 0 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
Goal: 3.300MB/s transfers
Curr: 3.300MB/s transfers
Transmission Errors 0
Channel A Target 0 Lun 0 Settings
Commands Queued 1027156
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
Target 1 Negotiation Settings
User: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
Goal: 3.300MB/s transfers
Curr: 3.300MB/s transfers
Transmission Errors 0
Channel A Target 1 Lun 0 Settings
Commands Queued 1012922
Commands Active 0
Command Openings 32
Max Tagged Openings 32
Device Queue Frozen Count 0
/dev/sda:
Timing cached reads: 2216 MB in 2.00 seconds = 1108.00 MB/sec
Timing buffered disk reads: 6 MB in 3.02 seconds = 1.99 MB/sec
Почему трансфер такой медленный? И можно ли добиться увеличения скорости
работы винта?
Спасибо!
--
Всего наилучшего!
greg_[at]_anastasia_[dot]_ru Григорий.
reply other threads:[~2005-03-27 13:05 UTC|newest]
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