No DMA support <1MB/s -------------------- dmesg | grep ata BIOS-e820: 000000003f690000 - 000000003f69e000 (ACPI data) ACPI: SSDT (v001 SataRe SataPri 0x00001000 INTL 0x20050624) @ 0x3f696329 ACPI: SSDT (v001 SataRe SataSec 0x00001000 INTL 0x20050624) @ 0x3f695c97 Memory: 1023668k/1038912k available (3107k kernel code, 14632k reserved, 1507k data, 340k init, 121408k highmem) .data : 0xc0408fbb - 0xc0581e90 (1507 kB) libata version 2.00 loaded. ata_piix 0000:00:1f.2: version 2.00ac7 ata_piix 0000:00:1f.2: MAP [ IDE IDE P1 P3 ] ata: 0x1F0 IDE port busy ata: conflict with ide0 ata1: DUMMY ata2: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0x18B8 irq 15 scsi0 : ata_piix scsi1 : ata_piix. ------------------------ dmesg | grep hda hda: ST9160821A, ATA DISK drive hda: max request size: 512KiB hda: 312581808 sectors (160041 MB) w/8192KiB Cache, CHS=19457/255/63 hda: cache fcat /usr/src/linux/.config | grep ATA CONFIG_X86_MCE_NONFATAL=y # CONFIG_RELOCATABLE is not set # CONFIG_ATALK is not set # CONFIG_ATA_OVER_ETH is not set # ATA/ATAPI/MFM/RLL support # CONFIG_BLK_DEV_IDE_SATA is not set # CONFIG_SCSI_EATA is not set # Serial ATA (prod) and Parallel ATA (experimental) drivers CONFIG_ATA=y # CONFIG_ATA_NONSTANDARD is not set CONFIG_SATA_AHCI=y CONFIG_SATA_SVW=y CONFIG_ATA_PIIX=y # CONFIG_SATA_MV is not set CONFIG_SATA_NV=y # CONFIG_SATA_QSTOR is not set # CONFIG_SATA_PROMISE is not set # CONFIG_SATA_SX4 is not set CONFIG_SATA_SIL=y # CONFIG_SATA_SIL24 is not set # CONFIG_SATA_SIS is not set # CONFIG_SATA_ULI is not set CONFIG_SATA_VIA=y # CONFIG_SATA_VITESSE is not set CONFIG_SATA_INTEL_COMBINED=y lushes supported hda: hda1 hda2 ------------------------------------- cat /usr/src/linux/.config | grep ATA CONFIG_X86_MCE_NONFATAL=y # CONFIG_RELOCATABLE is not set # CONFIG_ATALK is not set # CONFIG_ATA_OVER_ETH is not set # ATA/ATAPI/MFM/RLL support # CONFIG_BLK_DEV_IDE_SATA is not set # CONFIG_SCSI_EATA is not set # Serial ATA (prod) and Parallel ATA (experimental) drivers CONFIG_ATA=y # CONFIG_ATA_NONSTANDARD is not set CONFIG_SATA_AHCI=y CONFIG_SATA_SVW=y CONFIG_ATA_PIIX=y # CONFIG_SATA_MV is not set CONFIG_SATA_NV=y # CONFIG_SATA_QSTOR is not set # CONFIG_SATA_PROMISE is not set # CONFIG_SATA_SX4 is not set CONFIG_SATA_SIL=y # CONFIG_SATA_SIL24 is not set # CONFIG_SATA_SIS is not set # CONFIG_SATA_ULI is not set CONFIG_SATA_VIA=y # CONFIG_SATA_VITESSE is not set CONFIG_SATA_INTEL_COMBINED=y ------------------------------------ cat /usr/src/linux/.config | grep IDE # CONFIG_ACPI_VIDEO is not set CONFIG_IDE=y CONFIG_BLK_DEV_IDE=y # Please see Documentation/ide.txt for help/info on IDE drives # CONFIG_BLK_DEV_IDE_SATA is not set # CONFIG_BLK_DEV_HD_IDE is not set CONFIG_BLK_DEV_IDEDISK=y CONFIG_IDEDISK_MULTI_MODE=y # CONFIG_BLK_DEV_IDECS is not set CONFIG_BLK_DEV_IDECD=y # CONFIG_BLK_DEV_IDETAPE is not set # CONFIG_BLK_DEV_IDEFLOPPY is not set # CONFIG_BLK_DEV_IDESCSI is not set # CONFIG_IDE_TASK_IOCTL is not set # IDE chipset support/bugfixes CONFIG_IDE_GENERIC=y CONFIG_BLK_DEV_IDEPCI=y # CONFIG_IDEPCI_SHARE_IRQ is not set CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_IDEDMA_FORCED is not set CONFIG_IDEDMA_PCI_AUTO=y # CONFIG_IDEDMA_ONLYDISK is not set # CONFIG_IDE_ARM is not set # CONFIG_IDE_CHIPSETS is not set CONFIG_BLK_DEV_IDEDMA=y # CONFIG_IDEDMA_IVB is not set CONFIG_IDEDMA_AUTO=y # Old CD-ROM drivers (not SCSI, not IDE) # CONFIG_CD_NO_IDESCSI is not set # CONFIG_IEEE1394_VIDEO1394 is not set Reproducible: Always Actual Results: hdparm -tT /dev/hda /dev/hda: Timing cached reads: 2138 MB in 2.00 seconds = 1069.44 MB/sec Timing buffered disk reads: 4 MB in 3.24 seconds = 1.23 MB/sec ---------------------- System is almost entirely unresponsive during disk read/writes Expected Results: DMA=1 :) This is on an ACER Aspire 9410 I tried disabling everything not absolutely necessary to ATA and SATA, and managed to get the Timing cached reads: 4269 MB in 2.00 seconds = ~2000 MB/sec. Rebooted a second time, and the driver had a problem with interupts on irq 14, and thus, did not load, rendering the system unbootable. ----------- output of lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02) 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller IDE (rev 02) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. Unknown device 8168 (rev 01) 05:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02) 0a:06.0 CardBus bridge: Texas Instruments Unknown device 8039 0a:06.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD) 0a:06.3 Generic system peripheral [0805]: Texas Instruments Unknown device 803c
At least tell us which kernel version is this about.
Kernel version 2.6.20
Your disk controller is being claimed by the generic IDE driver. Please disable that. Bear in mind that if libata ata_piix does successfully claim the device, your disk will move from hda to sda.
I thought i tried that, and the PIIX wouldn't even recognize the chipset. Disabling generic ata support now, and changing all references of hda to sda.
Sucess! This doesn't happen on any other system I've run into, but removing the Generica ATA driver did in fact solve the problem. # CONFIG_ATA_GENERIC is not set
Should the generic ATA always be releasing the hardware when a more suitable driver asserts itself?
Not right now. And you don't need to disable that option, you only need to disable the generic IDE part.
