I'm using jaunty 64 bit. Unfortunately I've install a mainline kernel Linux xxx-desktop 2.6.29-02062906-generic #02062906 SMP Fri Jul 3 10:17:03 UTC 2009 x86_64 GNU/Linux but speed problem persists. Speed transfer between hard disks below 5Mb/sec.
Below hard disks info. /dev/sda: Model=SAMSUNG SP2504C , FwRev=VT100-50, SerialNo=S09QJ1PP321450 Config={ Fixed } RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4 BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=?0? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=488397168 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 *udma6 AdvancedPM=no WriteCache=enabled Drive conforms to: unknown: ATA/ATAPI-1,2,3,4,5,6,7 * signifies the current active mode -------------------------------------------------------------------------------------------------- /dev/sdb: Model=SAMSUNG HD753LJ , FwRev=1AA01113, SerialNo=S13UJDWQ801281 Config={ Fixed } RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4 BuffType=DualPortCache, BuffSize=32767kB, MaxMultSect=16, MultSect=?0? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1465149168 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 *udma6 AdvancedPM=yes: disabled (255) WriteCache=enabled Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7 * signifies the current active mode Singular Hard disk performance is standard/ sudo hdparm -tT /dev/sda /dev/sda: Timing cached reads: 3872 MB in 2.00 seconds = 1936.29 MB/sec Timing buffered disk reads: 194 MB in 3.01 seconds = 64.54 MB/sec /dev/sdb: Timing cached reads: 5664 MB in 2.00 seconds = 2833.85 MB/sec Timing buffered disk reads: 286 MB in 3.02 seconds = 94.67 MB/sec -- Slow SATA performance https://bugs.launchpad.net/bugs/119730 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs