Re: slow system

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Craig White wrote:
On Sat, 2007-01-13 at 16:30 -0500, Stephen Harris wrote:
On Sat, Jan 13, 2007 at 02:18:12PM -0700, Craig White wrote:
/dev/hda6:
 Timing buffered disk reads:    4 MB in  3.63 seconds =   1.10 MB/sec
What does "hdparm -i /dev/hda" say?
----
# hdparm -i /dev/hda

/dev/hda:

 Model=WDC WD800JB-00JJA0, FwRev=05.01C05, SerialNo=WD-WCAM92819556
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs
FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=66
 BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: device does not report version:

 * signifies the current active mode

phew, something is *way* wrong. this is from a p3-450Mhz RHL 6.3 system I have at home, ancient Intel 440BX motherboard, and an ancient IBM Deskstar 25GB 5400rpm drive.

# hdparm -t /dev/hda

/dev/hda:
Timing buffered disk reads:  64 MB in  4.44 seconds = 14.41 MB/sec

# hdparm -i /dev/hda

/dev/hda:

Model=IBM-DJNA-352500, FwRev=J51OA30K, SerialNo=GW0GWFD6488
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
BuffType=3(DualPortCache), BuffSize=1966kB, MaxMultSect=16, MultSect=16
DblWordIO=no, OldPIO=2, DMA=yes, OldDMA=2
CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=49981680
tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2
IORDY=on/off, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4
UDMA modes: mode0 mode1 *mode2 mode3 mode4

# uname -a
Linux hogranch.com 2.2.24-6.2.3 #1 Fri Mar 14 08:41:15 EST 2003 i686 unknown






here's a p3 866Mhz running CentOS 4 on a crappy i810e (old dell optiplex) w/ an old Seagate 10GB 7200rpm

# uname -a
Linux svfis-linux1 2.6.9-42.0.3.EL #1 Fri Oct 6 05:59:54 CDT 2006 i686 i686 i386 GNU/Linux

# hdparm -t /dev/hda

/dev/hda:
Timing buffered disk reads:   82 MB in  3.05 seconds =  26.92 MB/sec

# hdparm -i /dev/hda

/dev/hda:

Model=ST310210A, FwRev=3.17, SerialNo=3CM0T2X9
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=19925880
IORDY=on/off, tPIO={min:240,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
AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version:  1 2 3 4

* signifies the current active mode


and, a IBM BladeCenter Xeon 2.8Ghz w/ a 2.5" SCSI 36GB...

# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads:  160 MB in  3.20 seconds =  50.01 MB/sec

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