>lspci 00:00.0 Host bridge: Intel Corp.: Unknown device 2588 (rev 05) 00:01.0 PCI bridge: Intel Corp.: Unknown device 2589 (rev 05) 00:02.0 VGA compatible controller: Intel Corp.: Unknown device 258a (rev 05) 00:1c.0 PCI bridge: Intel Corp.: Unknown device 2660 (rev 03) 00:1c.1 PCI bridge: Intel Corp.: Unknown device 2662 (rev 03) 00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev d3) 00:1f.0 ISA bridge: Intel Corp.: Unknown device 2640 (rev 03) 00:1f.1 IDE interface: Intel Corp.: Unknown device 266f (rev 03) 00:1f.2 IDE interface: Intel Corp.: Unknown device 2652 (rev 03) 00:1f.3 SMBus: Intel Corp.: Unknown device 266a (rev 03) 01:00.0 PCI bridge: Intel Corp.: Unknown device 032c (rev 09) 01:00.1 PIC: Intel Corp.: Unknown device 0326 (rev 09) 03:00.0 Ethernet controller: Broadcom Corporation: Unknown device 1659 (rev 11) 04:00.0 Ethernet controller: Broadcom Corporation: Unknown device 1659 (rev 11) .config ... # # SCSI low-level drivers # CONFIG_BLK_DEV_3W_XXXX_RAID=y CONFIG_SCSI_3W_9XXX=y # CONFIG_SCSI_ACARD is not set # CONFIG_SCSI_AACRAID is not set # CONFIG_SCSI_AIC7XXX is not set # CONFIG_SCSI_AIC7XXX_OLD is not set # CONFIG_SCSI_AIC79XX is not set # CONFIG_SCSI_DPT_I2O is not set # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set CONFIG_SCSI_SATA=y # CONFIG_SCSI_SATA_AHCI is not set # CONFIG_SCSI_SATA_SVW is not set CONFIG_SCSI_ATA_PIIX=y # CONFIG_SCSI_SATA_NV is not set CONFIG_SCSI_SATA_PROMISE=y # CONFIG_SCSI_SATA_QSTOR is not set # CONFIG_SCSI_SATA_SX4 is not set CONFIG_SCSI_SATA_SIL=y # CONFIG_SCSI_SATA_SIS is not set # CONFIG_SCSI_SATA_ULI is not set # CONFIG_SCSI_SATA_VIA is not set # CONFIG_SCSI_SATA_VITESSE is not set ... i am using a supermicro board. sata controler is onboard. I know that when i use a controller such as 3ware that "hides" the disks and export scsi disks i have much less cpu. cpu is xeon 3.0 GHZ. this is the storage information from dmesg. ata1: SATA max UDMA/133 cmd 0xE900 ctl 0xEA02 bmdma 0xED00 irq 10 ata2: SATA max UDMA/133 cmd 0xEB00 ctl 0xEC02 bmdma 0xED08 irq 10 ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4673 85:7c69 86:3e01 87:4663 88:207f ata1: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48 ata1: dev 0 configured for UDMA/133 scsi0 : ata_piix ata2: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4673 85:7c69 86:3e01 87:4663 88:207f ata2: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48 ata2: dev 0 configured for UDMA/133 scsi1 : ata_piix Vendor: ATA Model: Maxtor 7L250S0 Rev: BANC Type: Direct-Access ANSI SCSI revision: 05 Vendor: ATA Model: Maxtor 7L250S0 Rev: BANC Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sda: drive cache: write back SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sda: drive cache: write back /dev/scsi/host0/bus0/target0/lun0: p1 p2 p3 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sdb: drive cache: write back SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB) SCSI device sdb: drive cache: write back /dev/scsi/host1/bus0/target0/lun0: p1 p2 p3 Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0 Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0 Attached scsi generic sg1 at scsi1, channel 0, id 0, lun 0, type 0 mice: PS/2 mouse device common for all mice input: AT Translated Set 2 keyboard on isa0060/serio0 i2c /dev entries driver md: linear personality registered as nr 1 md: raid0 personality registered as nr 2 md: raid1 personality registered as nr 3 md: raid5 personality registered as nr 4 On 11/21/05, Jeff Garzik <jgarzik@xxxxxxxxx> wrote: > On Mon, Nov 21, 2005 at 10:15:11AM -0800, Raz Ben-Jehuda(caro) wrote: > > Well , i have tested the disk with a new tester i have written. it seems that > > the ata driver causes the high cpu and not raid. > > Which drivers are you using? lspci and kernel .config? > > Jeff > > > > -- Raz - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html