On 05/09/2011 10:08 PM, Ali Ahsan wrote:
On 05/09/2011 09:45 PM, Lamar Owen wrote:
What sort of SATA drives are you using? There are some known issues with some SATA drives in certain configurations and on some controllers. It shouldn't cause kswapd to hit high CPU, but it is worth checking out.
these modules are loaded when i install centos 5.5.
lsmod | egrep 'ata_piix|libata' ata_piix 57285 3 libata 208977 1 ata_piix scsi_mod 199001 5 scsi_dh,sg,usb_storage,libata,sd_mod
More info
SCSI subsystem initialized libata version 3.00 loaded. ata_piix 0000:00:1f.2: version 2.12 ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 19 (level, low) -> IRQ 74 ata_piix 0000:00:1f.2: MAP [ P0 P2 P1 P3 ] PCI: Setting latency timer of device 0000:00:1f.2 to 64 scsi0 : ata_piix scsi1 : ata_piix ata1: SATA max UDMA/133 cmd 0x3158 ctl 0x316c bmdma 0x3130 irq 74 ata2: SATA max UDMA/133 cmd 0x3150 ctl 0x3168 bmdma 0x3138 irq 74 ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1.00: ATA-8: WDC WD10EARS-003BB1, 80.00A80, max UDMA/133 ata1.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 0/32) ata1.00: configured for UDMA/133 ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: ATA-8: WDC WD10EARS-003BB1, 80.00A80, max UDMA/133 ata2.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 0/32) ata2.00: configured for UDMA/133 Vendor: ATA Model: WDC WD10EARS-003 Rev: 80.0 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 1953525168 512-byte hdwr sectors (1000205 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back SCSI device sda: 1953525168 512-byte hdwr sectors (1000205 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back SCSI device sda: 1953525168 512-byte hdwr sectors (1000205 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back sda: sda1 sda2 sd 0:0:0:0: Attached scsi disk sda Vendor: ATA Model: WDC WD10EARS-003 Rev: 80.0 Type: Direct-Access ANSI SCSI revision: 05