Hello, After I've updated my system and installed everything anew I experience a really low IDE Performance. Here some data: hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 44 MB in 3.09 seconds = 14.24 MB/sec hdparm -t /dev/md0 /dev/md0: Timing buffered disk reads: 116 MB in 3.02 seconds = 38.47 MB/sec Any Idea whats wrong? I read this year there were problems with seagate HD and there would be a patch against corrupting data.... When is it intended to rise the performance? I remember from 2.4 kernel that the HD's were working with average 50MB/s each! Here is my dmesg (all ide relevant data) dmesg: libata version 1.02 loaded. sata_sil version 0.54 ACPI: PCI interrupt 0000:03:03.0[A] -> GSI 19 (level, low) -> IRQ 19 ata1: SATA max UDMA/100 cmd 0xF8B09080 ctl 0xF8B0908A bmdma 0xF8B09000 irq 19 ata2: SATA max UDMA/100 cmd 0xF8B090C0 ctl 0xF8B090CA bmdma 0xF8B09008 irq 19 ata3: SATA max UDMA/100 cmd 0xF8B09280 ctl 0xF8B0928A bmdma 0xF8B09200 irq 19 ata4: SATA max UDMA/100 cmd 0xF8B092C0 ctl 0xF8B092CA bmdma 0xF8B09208 irq 19 ata1: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:207f ata1: dev 0 ATA, max UDMA/133, 312581808 sectors: lba48 ata1(0): applying Seagate errata fix ata1: dev 0 configured for UDMA/100 scsi0 : sata_sil ata2: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:207f ata2: dev 0 ATA, max UDMA/133, 312581808 sectors: lba48 ata2(0): applying Seagate errata fix ata2: dev 0 configured for UDMA/100 scsi1 : sata_sil ata3: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:207f ata3: dev 0 ATA, max UDMA/133, 312581808 sectors: lba48 ata3(0): applying Seagate errata fix ata3: dev 0 configured for UDMA/100 scsi2 : sata_sil ata4: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:207f ata4: dev 0 ATA, max UDMA/133, 312581808 sectors: lba48 ata4(0): applying Seagate errata fix ata4: dev 0 configured for UDMA/100 scsi3 : sata_sil Vendor: ATA Model: ST3160023AS Rev: 3.05 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 Vendor: ATA Model: ST3160023AS Rev: 3.05 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdb: 312581808 512-byte hdwr sectors (160042 MB) SCSI device sdb: drive cache: write back sdb: sdb1 sdb2 Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0 Vendor: ATA Model: ST3160023AS Rev: 3.05 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdc: 312581808 512-byte hdwr sectors (160042 MB) SCSI device sdc: drive cache: write back sdc: sdc1 sdc2 Attached scsi disk sdc at scsi2, channel 0, id 0, lun 0 Vendor: ATA Model: ST3160023AS Rev: 3.05 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdd: 312581808 512-byte hdwr sectors (160042 MB) SCSI device sdd: drive cache: write back sdd: sdd1 Attached scsi disk sdd at scsi3, channel 0, id 0, lun 0 md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 raid5: automatically using best checksumming function: pIII_sse pIII_sse : 3920.000 MB/sec raid5: using function: pIII_sse (3920.000 MB/sec) md: raid5 personality registered as nr 4 ReiserFS: hda5: found reiserfs format "3.6" with standard journal ReiserFS: hda5: using ordered data mode ReiserFS: hda5: journal params: device hda5, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 ReiserFS: hda5: checking transaction log (hda5) ReiserFS: hda5: Using r5 hash to sort names Freeing unused kernel memory: 156k freed md: raidstart(pid 353) used deprecated START_ARRAY ioctl. This will not be suppo rted beyond 2.6 md: autorun ... md: considering sdc2 ... md: adding sdc2 ... md: adding sdb2 ... md: adding sda2 ... md: created md0 md: bind<sda2> md: bind<sdb2> md: bind<sdc2> md: running: <sdc2><sdb2><sda2> raid5: device sdc2 operational as raid disk 2 raid5: device sdb2 operational as raid disk 1 raid5: device sda2 operational as raid disk 0 raid5: allocated 3155kB for md0 raid5: raid level 5 set md0 active with 3 out of 3 devices, algorithm 2 RAID5 conf printout: --- rd:3 wd:3 fd:0 disk 0, o:1, dev:sda2 disk 1, o:1, dev:sdb2 disk 2, o:1, dev:sdc2 md: ... autorun DONE. ReiserFS: md0: found reiserfs format "3.6" with standard journal ReiserFS: md0: using ordered data mode ReiserFS: md0: journal params: device md0, size 8192, journal first block 18, ma x trans len 1024, max batch 900, max commit age 30, max trans age 30 ReiserFS: md0: checking transaction log (md0) ReiserFS: md0: Using r5 hash to sort names - 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
