hdparm write cache:disabled низкая производительность винчестера

[coolchevy]

Подскажите, столкнулся с проблемой.

Есть сервер HP DL-160 G5 (на G6 тоже самое, проверял)
Заметил что очень маленькая скорость при копировании файлов и вообще работе файловой системы (плавает начиная от 15, заканчивает 3 Мб/с при записи) . При большой нагрузке load avarage может расти до 60-80.

винчестер, который идет с сервером в комплекте

# hdparm -i /dev/sda

/dev/sda:

 Model=GB0250EAFJF                             , FwRev=HPG8    , SerialNo=9SF182EM
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=488397168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
 AdvancedPM=no WriteCache=disabled
 Drive conforms to: unknown:  ATA/ATAPI-4,5,6,7

 * signifies the current active mode

я выделил то что меня больше всего беспокоит.

 hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   6668 MB in  1.99 seconds = 3343.35 MB/sec
 Timing buffered disk reads:  286 MB in  3.02 seconds =  94.80 MB/sec

в биосе WriteCache включен. Режим ACHI, SATA Enhanced

в dmesg тоже все грустно

[    6.966852] Driver 'sr' needs updating - please use bus_type methods
[    6.969434] Driver 'sd' needs updating - please use bus_type methods
[    6.969434] sd 0:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB)
[    6.969434] sd 0:0:0:0: [sda] Write Protect is off
[    6.969434] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    6.969434] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    6.969434] sd 0:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB)
[    6.969434] sd 0:0:0:0: [sda] Write Protect is off
[    6.969434] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    6.969434] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA

Debian Lenny Linux 2.6.26-2-xen-amd64 #1 SMP Thu Nov 5 04:27:12 UTC 2009 x86_64 GNU/Linux

буду очень благодарен, если кто-то сможет объяснить почему так, и как увеличить производительность. Заранее спасибо.

[Hubbitus]

А какой драйвер для него используется? Какой чипсет для SATA? Это на мамке или внешний какой контроллер?

[coolchevy]

09:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET PCI-Express                                                               Fusion-MPT SAS (rev 08)

родной, который идет в комплекте с сервером

по поводу драйвера - не знаю, какой-то подхватил. Подскажите как правильно посмотреть, я в dmesg по поводу LSI или SAS1064ET ничго не вижу((

[Hubbitus]

lspci смотрите

[coolchevy]

простите за неграмотность, вот полный вывод

# lspci
00:00.0 Host bridge: Intel Corporation 5400 Chipset Memory Controller Hub (rev 20)
00:01.0 PCI bridge: Intel Corporation 5400 Chipset PCI Express Port 1 (rev 20)
00:05.0 PCI bridge: Intel Corporation 5400 Chipset PCI Express Port 5 (rev 20)
00:09.0 PCI bridge: Intel Corporation 5400 Chipset PCI Express Port 9 (rev 20)
00:10.0 Host bridge: Intel Corporation 5400 Chipset FSB Registers (rev 20)
00:10.1 Host bridge: Intel Corporation 5400 Chipset FSB Registers (rev 20)
00:10.2 Host bridge: Intel Corporation 5400 Chipset FSB Registers (rev 20)
00:10.3 Host bridge: Intel Corporation 5400 Chipset FSB Registers (rev 20)
00:10.4 Host bridge: Intel Corporation 5400 Chipset FSB Registers (rev 20)
00:11.0 Host bridge: Intel Corporation 5400 Chipset CE/SF Registers (rev 20)
00:15.0 Host bridge: Intel Corporation 5400 Chipset FBD Registers (rev 20)
00:15.1 Host bridge: Intel Corporation 5400 Chipset FBD Registers (rev 20)
00:16.0 Host bridge: Intel Corporation 5400 Chipset FBD Registers (rev 20)
00:16.1 Host bridge: Intel Corporation 5400 Chipset FBD Registers (rev 20)
00:1c.0 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 1 (rev 09)
00:1c.1 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 2 (rev 09)
00:1c.2 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 3 (rev 09)
00:1d.0 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #1 (rev 09)
00:1d.1 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #2 (rev 09)
00:1d.2 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #3 (rev 09)
00:1d.3 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #4 (rev 09)
00:1d.7 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI USB2 Controller (rev 09)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev 09)
00:1f.2 RAID bus controller: Intel Corporation 631xESB/632xESB SATA RAID Controller (rev 09)
02:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot] ServerEngines (SEP1) (rev 02)
03:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express
04:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express
05:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port (rev 01)
05:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge (rev 01)
06:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E1 (rev 01)
09:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS (rev 08)

[Hubbitus]

lspci -vvv -s 09:00.0

[coolchevy]

спасибо, нашел драйвер - mptsas

09:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS (rev 08)
        Subsystem: Hewlett-Packard Company Device 322b
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 52
        Region 0: I/O ports at c000 [size=256]
        Region 1: Memory at fdefc000 (64-bit, non-prefetchable) [size=16K]
        Region 3: Memory at fdee0000 (64-bit, non-prefetchable) [size=64K]
        Expansion ROM at fdc00000 [disabled] [size=2M]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [68] Express (v1) Endpoint, MSI 00
                DevCap: MaxPayload 4096 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE- FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x8, ASPM L0s L1, Latency L0 <64ns, L1 <1us
                        ClockPM- Suprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
        Capabilities: [98] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
                Address: 0000000000000000  Data: 0000
        Capabilities: [b0] MSI-X: Enable- Mask- TabSize=1
                Vector table: BAR=1 offset=00002000
                PBA: BAR=1 offset=00003000
        Capabilities: [100] Advanced Error Reporting <?>
        Kernel driver in use: mptsas
        Kernel modules: mptsas

# lsmod |grep mptsas
mptsas                 30096  6
mptscsih               29568  1 mptsas
mptbase                62052  3 mptctl,mptsas,mptscsih
scsi_transport_sas     37632  1 mptsas
scsi_mod              161528  6 mptctl,sd_mod,libata,mptsas,mptscsih,scsi_transport_sas

[Hubbitus]

Посмотрите его описание (modinfo mptsas) и попробуйте поиграться с различными настройками.