low breezy hard disk performances

Vincent Trouilliez vincent.trouilliez at modulonet.fr
Thu Sep 8 04:53:52 CDT 2005

On Thu, 2005-09-08 at 11:04 +0200, The Saltydog wrote:
> Before upgrading to breezy I have saved my disk timings from running
> sudo hdparm -tT /dev/hda

Not sure it helps, but, I happen to have the exact same drive (slightly
different serial number and firmware though), 

Model=Maxtor 6E040L0, FwRev=NAR61EA0, SerialNo=E14689RN
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80293248
 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: (null):

and I have always had a repeatable 57+ MB/s (like you), in Hoary, then
when dist-upgrading to Breezy, and also when installing Breezy from a
clean sheet of paper (Colony X + daily updates ie).
I did once, get about 13MB/s like you, but it turned out to be my
fault : I was at the time, fiddling with internal peripherals, and I
inadvertently swapped the 80 wire ribbon cable of the hard drive, with
the 40wire one of the CD drive. Putting the proper cable instantly fixed
the problem. 

As for CPU, mine is an old Athlon about half the speed of your Intel, so
I don't think it matters much for transfer rates ?



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