Messages in this thread | | | Subject | ICH6M SATA Controller, SATA2 NCQ disk and high iowait CPU time | From | "gary.czek" <> | Date | Fri, 24 Nov 2006 22:39:36 +0100 |
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Hi, I have problem with my notebook Fujitsu-Siemens V8010. It has Intel ICH6M chipset with SATA Controller. And SATA II disk Fujitsu MHT2040BH with NCQ. If there is request on disk, iowait time of CPU gets to 100% and whole system gets totally unresponsible. For example apt upgrade (of average 10 packages totaling 30MB in .debs) gets 30 minutes. CPU iowait time gets about 95% for whole 30 minutes.
My notebook details: CPU: Intel Celeron M 1,4GHz MEM: 256MB 333MHz HDD: Fujitsu MHT2040BH SATA II, NCQ, 5400rpm, 8MB buffer SWP: 512MB swap partition Chipset: ICH6M 82801FBM GPU: Intel i915GM integrated
kernel: 2.6.19-rc5 SATA Controller/disk driver: ata_piix and ahci tested, but results of both were almost the same.
dmesg: [ 12.746000] ata_piix 0000:00:1f.1: version 2.00ac6 [ 12.746000] ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18 [ 12.746000] PCI: Setting latency timer of device 0000:00:1f.1 to 64 [ 12.746000] ata1: PATA max UDMA/100 cmd 0x1F0 ctl 0x3F6 bmdma 0x1810 irq 14 [ 12.746000] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x1818 irq 15 [ 12.746000] scsi0 : ata_piix [ 13.049000] ata1.00: ATAPI, max UDMA/33 [ 13.201000] ata1.00: configured for UDMA/33 [ 13.201000] scsi1 : ata_piix [ 13.201000] ata2: port disabled. ignoring. [ 13.201000] ATA: abnormal status 0xFF on port 0x177 [ 13.204000] scsi 0:0:0:0: CD-ROM HL-DT-ST RW/DVD GCC-4243N 1.03 PQ: 0 ANSI: 5 [ 13.206000] sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray [ 13.206000] Uniform CD-ROM driver Revision: 3.20 [ 13.206000] sr 0:0:0:0: Attached scsi CD-ROM sr0 [ 13.206000] ata_piix 0000:00:1f.2: MAP [ P0 P2 XX XX ] [ 13.206000] ata_piix 0000:00:1f.2: invalid MAP value 128 [ 13.206000] ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 19 [ 13.206000] PCI: Setting latency timer of device 0000:00:1f.2 to 64 [ 13.206000] ata3: SATA max UDMA/133 cmd 0x2088 ctl 0x2082 bmdma 0x18B0 irq 19 [ 13.206000] ata4: SATA max UDMA/133 cmd 0x18A8 ctl 0x180E bmdma 0x18B8 irq 19 [ 13.206000] scsi2 : ata_piix [ 13.359000] ata3.00: ATA-7, max UDMA/100, 78140160 sectors: LBA48 NCQ (depth 0/32) [ 13.359000] ata3.00: ata3: dev 0 multi count 16 [ 13.362000] ata3.00: configured for UDMA/100 [ 13.362000] scsi3 : ata_piix [ 13.513000] ATA: abnormal status 0x7F on port 0x18AF [ 13.514000] scsi 2:0:0:0: Direct-Access ATA FUJITSU MHT2040B 0000 PQ: 0 ANSI: 5 [ 13.514000] SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB) [ 13.514000] sda: Write Protect is off [ 13.514000] sda: Mode Sense: 00 3a 00 00 [ 13.514000] SCSI device sda: drive cache: write back [ 13.514000] SCSI device sda: 78140160 512-byte hdwr sectors (40008 MB) [ 13.514000] sda: Write Protect is off [ 13.514000] sda: Mode Sense: 00 3a 00 00 [ 13.514000] SCSI device sda: drive cache: write back [ 13.514000] sda: sda1 sda2 sda3 [ 13.574000] sd 2:0:0:0: Attached scsi disk sda [ 13.880000] Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 [ 13.880000] ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx [ 13.880000] ide0: I/O resource 0x1F0-0x1F7 not free. [ 13.880000] ide0: ports already in use, skipping probe [ 13.880000] ide1: I/O resource 0x170-0x177 not free. [ 13.880000] ide1: ports already in use, skipping probe
hdparm: gary@ntb:~$ sudo hdparm -tT -d1 -v /dev/sda
/dev/sda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Inappropriate ioctl for device IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 4864/255/63, sectors = 78140160, start = 0 Timing cached reads: 1920 MB in 2.00 seconds = 960.43 MB/sec Timing buffered disk reads: 88 MB in 3.02 seconds = 29.11 MB/sec
my measures has average buffered disk: 22 MB/sec maximal buffered disk: 34 MB/sec
On cnet is said that this hdd has maximum internal data transfer rate (how fast it can actually pull data off the disk surface) of 53.9 MBps.
lshw: gary@ntb:~$ sudo lshw -class ide -class storage -class disk *-storage description: Mass storage controller product: PCIxx21 Integrated FlashMedia Controller vendor: Texas Instruments physical id: 9.3 bus info: pci@06:09.3 version: 00 width: 32 bits clock: 33MHz capabilities: storage bus_master cap_list configuration: driver=tifm_7xx1 resources: iomemory:b0106000-b0107fff irq:17 *-ide description: IDE interface product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller vendor: Intel Corporation physical id: 1f.1 bus info: pci@00:1f.1 logical name: scsi0 version: 04 width: 32 bits clock: 33MHz capabilities: ide bus_master emulated configuration: driver=ata_piix resources: ioport:1810-181f irq:18 *-cdrom UNCLAIMED description: SCSI CD-ROM product: RW/DVD GCC-4243N vendor: HL-DT-ST physical id: 0.0.0 bus info: scsi@0:0.0.0 version: 1.03 capabilities: removable configuration: ansiversion=5 *-storage description: SATA controller product: 82801FBM (ICH6M) SATA Controller vendor: Intel Corporation physical id: 1f.2 bus info: pci@00:1f.2 logical name: scsi2 version: 04 width: 32 bits clock: 66MHz capabilities: storage ahci_1.0 bus_master cap_list emulated configuration: driver=ata_piix resources: ioport:2088-208f ioport:2080-2083 ioport:18a8-18af ioport:180c-180f ioport:18b0-18bf iomemory:b0040c00-b0040fff irq:19 *-disk description: SCSI Disk product: FUJITSU MHT2040B vendor: ATA physical id: 0.0.0 bus info: scsi@2:0.0.0 logical name: /dev/sda version: 0000 serial: NR29T5A26VMV size: 37GB capabilities: partitioned partitioned:dos configuration: ansiversion=5 *-volume:0 description: Linux filesystem partition physical id: 1 bus info: scsi@2:0.0.0,1 logical name: /dev/sda1 capacity: 9538MB capabilities: primary bootable *-volume:1 description: Linux swap / Solaris partition physical id: 2 bus info: scsi@2:0.0.0,2 logical name: /dev/sda2 capacity: 517MB capabilities: primary nofs *-volume:2 description: Linux filesystem partition physical id: 3 bus info: scsi@2:0.0.0,3 logical name: /dev/sda3 capacity: 27GB capabilities: primary
I have no other idea how to solve this problem. I'm not sure whether disk uses correct driver. Friend told me that it may be solved by increasing RAM (i plan buy additional 1024MB RAM for christmas). I'm nearly hopeless. I'm trying to find the solution for more than 4months. Thanks in advance for every hint.
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