Hello, on my laptop with one IBM-DADA-26480, running potato and 2.2.10 kernel I get
hda: lost interrupt hda: read_intr: status=0x50 { DriveReady SeekComplete } Every lost intrrupt mean a IO gets suspended for ~ 5 secs. I've checked the mail archives and suses and redhats (shame on me :) support databases without any hint. The BIOS setting conform to what's listed in the data sheet. I'm thankful for any hint. Achim P.S. below /proc/interrupts and output of dmesg CPU0 0: 2095582 XT-PIC timer 1: 3001 XT-PIC keyboard 2: 0 XT-PIC cascade 3: 49606 XT-PIC pcnet_cs 8: 2 XT-PIC rtc 11: 4 XT-PIC i82365 12: 23575 XT-PIC PS/2 Mouse 13: 1 XT-PIC fpu 14: 198388 XT-PIC ide0 15: 4 XT-PIC ide1 NMI: 0 Linux version 2.2.10 ([EMAIL PROTECTED]) (gcc version egcs-2.91.66 Debian GNU/Linux (egcs-1.1.2 release)) #2 Wed Jun 16 00:23:31 EST 1999 Detected 267275530 Hz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 266.24 BogoMIPS Memory: 62184k/65472k available (1688k kernel code, 408k reserved, 1036k data, 156k init) VFS: Diskquotas version dquot_6.4.0 initialized CPU: Intel Pentium II (Deschutes) stepping 00 Checking 386/387 coupling... OK, FPU using exception 16 error reporting. Checking 'hlt' instruction... OK. Checking for popad bug... OK. POSIX conformance testing by UNIFIX mtrr: v1.35 (19990512) Richard Gooch ([EMAIL PROTECTED]) PCI: PCI BIOS revision 2.10 entry at 0xfd9b4 PCI: Using configuration type 1 PCI: Probing PCI hardware Linux NET4.0 for Linux 2.2 Based upon Swansea University Computer Society NET3.039 NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP Starting kswapd v 1.5 Detected PS/2 Mouse Port. Real Time Clock Driver v1.09 tpqic02: Runtime config, $Revision: 1.10 $, $Date: 1997/01/26 07:13:20 $ tpqic02: DMA buffers: 20 blocks RAM disk driver initialized: 16 RAM disks of 4096K size loop: registered device at major 7 PIIX4: IDE controller on PCI bus 00 dev 39 PIIX4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xfcd0-0xfcd7, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xfcd8-0xfcdf, BIOS settings: hdc:pio, hdd:pio hda: IBM-DADA-26480, ATA DISK drive hdc: TOSHIBA CD-ROM XM-1802B, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: IBM-DADA-26480, 6194MB w/460kB Cache, CHS=13424/15/63 hdc: ATAPI 24X CD-ROM drive, 128kB Cache Uniform CDROM driver Revision: 2.55 Floppy drive(s): fd0 is 1.44M FDC 0 is a National Semiconductor PC87306 md driver 0.36.6 MAX_MD_DEV=4, MAX_REAL=8 scsi: <fdomain> Detection failed (no card) NCR53c406a: no available ports found sym53c416.c: Version 1.0.0 Failed initialization of WD-7000 SCSI card! IBM MCA SCSI: No Microchannel-bus support present -> Aborting. EATA0: address 0x1f0 in use, skipping probe. EATA0: address 0x170 in use, skipping probe. DC390: 0 adapters found aec671x_detect: scsi : 0 hosts. scsi : detected total. Partition check: hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 > VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 156k freed NET4: Unix domain sockets 1.0 for Linux NET4.0. Adding Swap: 102496k swap-space (priority -1) hda: lost interrupt hda: read_intr: status=0x50 { DriveReady SeekComplete } Serial driver version 4.27 with no serial options enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A Linux PCMCIA Card Services 3.0.14 kernel build: 2.2.10 unknown options: [pci] [cardbus] Intel PCIC probe: TI 1250A PCI-to-CardBus at bus 0 slot 10, mem 0x68000000, 2 sockets host opts [0]: [ring] [pwr save] [serial pci & irq] [no pci irq] [lat 168/176] [bus 32/34] host opts [1]: [ring] [pwr save] [serial pci & irq] [no pci irq] [lat 168/176] [bus 35/37] ISA irqs (scanned) = 3,4,7,10,11 status change on irq 11 cs: IO port probe 0x1000-0x17ff: excluding 0x1040-0x104f cs: IO port probe 0x0100-0x04ff: excluding 0x200-0x207 0x220-0x22f 0x330-0x337 0x378-0x37f 0x388-0x38f 0x398-0x39f 0x4d0-0x4d7 cs: IO port probe 0x0a00-0x0aff: clean. cs: memory probe 0xa0000000-0xa0ffffff: clean. eth0: NE2000 Compatible: io 0x300, irq 3, hw_addr 00:80:C8:8C:1E:CB hda: lost interrupt hda: read_intr: status=0x50 { DriveReady SeekComplete } hda: lost interrupt hda: lost interrupt hda: read_intr: status=0x50 { DriveReady SeekComplete } hda: lost interrupt hda: lost interrupt hda: lost interrupt hda: lost interrupt