Output from hdparm -Tt /dev/hde: /dev/hde: Timing buffer-cache reads: 128 MB in 0.32 seconds =400.00 MB/sec Timing buffered disk reads: 64 MB in 29.90 seconds = 2.14 MB/sec <--- *** This is the problem *** hdparm -i /dev/hde: /dev/hde: Model=Maxtor 54098H8, FwRev=DAC10SC0, SerialNo=K80H89SC Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80041248 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 AdvancedPM=yes: disabled (255) WriteCache=enabled Drive conforms to: ATA/ATAPI-6 T13 1410D revision 0: 1 2 3 4 5 6 hdparm /dev/hde: /dev/hde: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 4982/255/63, sectors = 80041248, start = 0 Relevant dmesg output: Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx PCI_IDE: unknown IDE controller on PCI bus 00 device 48, VID=10de, DID=0065 PCI_IDE: chipset revision 162 PCI_IDE: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA PDC20269: IDE controller on PCI bus 01 dev 38 PDC20269: chipset revision 2 PDC20269: not 100% native mode: will probe irqs later PDC20269: (U)DMA Burst Bit ENABLED Primary MASTER Mode Secondary MASTER Mode. ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:pio, hdf:pio ide3: BM-DMA at 0xa008-0xa00f, BIOS settings: hdg:pio, hdh:pio hde: Maxtor 54098H8, ATA DISK drive ide2 at 0x9000-0x9007,0x9402 on irq 10 blk: queue c037481c, I/O limit 4095Mb (mask 0xffffffff) hde: 80041248 sectors (40981 MB) w/2048KiB Cache, CHS=79406/16/63, UDMA(100) Partition check: /dev/ide/host2/bus0/target0/lun0: [PTBL] [4982/255/63] p1 p2 < p5 p6 > uname -a: Linux chronos-linux.spro.net 2.4.20-ck2 #7 Tue Jan 28 12:07:56 PST 2003 i686 AMD Athlon(tm) XP 2400+ AuthenticAMD GNU/Linux This is connected to a Promise Ultra 133 T2X IDE card (non-RAID). The drive is a Maxtor 54098H8, 40GB, 7200 RPM, ATA-5 support. As far as I know, all relevant options in the kernel are enabled. This same card and cable produces 40Mb/sec buffered reads using a Maxtor 540X (80Gb, 5400rpm, ATA5). The drive appears to be the determining factor, but the reasons for the poor performance are not revealed to me. Jumper settings are correct. No other flaws with the drive operation have been discovered. This same drive appears to run fine under different OSs (FreeBSD particularly) though I did not do specific performance checking. I have tried a variety of hdparm settings, none of which have a substantial effect on the transfer rate in question. The slow transfer rate noticeably affects application startup times (even VI has a substantially noticeable pause when loading) and various write times. I moved to the CK kernel at the suggestion of a regular on the #gentoo support channel. Both this kernel and the 2.4.19r10 kernel exhibit the same slowness with respect to this drive. I can make the machine available for remote access if necessary for investigation. Please contact me at the registered email address to set this up.
it looks like you're having some sort of kernel issue here...i.e. you don't have the right driver selected...or something along those lines... i highly doubt its an hdparm error, as hdparm usually just gets that information from proc...this is really a tough one... in other distros/*bsd it works fine? i don't think remote access would help any with this...i think first of all we need to know if it works with any other distro...you might also want to try xfs-sources b/c we have the updated ide stuff in there... let me know
reopen this bug if its still a problem...i'm resolving as 'needinfo'
db fix
