low breezy hard disk performances

Ernst Persson ernstp at gmail.com
Thu Sep 8 05:00:56 CDT 2005


Maybe you forgot to write it, but it looks like this is just the
result from one run on each OS?
That hdparm test is really flaky. Run it few times and you'll see that
you can get all kinds of results.

regards
//ernst

2005/9/8, The Saltydog <thesaltydog at gmail.com>:
> Before upgrading to breezy I have saved my disk timings from running
> sudo hdparm -tT /dev/hda
> 
> This was the timing on Hoary:
> 
> /dev/hda:
> Timing cached reads: 2980 MB in 2.00 seconds = 1488.74 MB/sec
> Timing buffered disk reads: 174 MB in 3.03 seconds = 57.49 MB/sec
> 
> and this is the current timing in Breezy:
> 
> /dev/hda:
> Timing cached reads: 2832 MB in 2.00 seconds = 1415.51 MB/sec
> Timing buffered disk reads: 40 MB in 3.01 seconds = 13.29 MB/sec
> 
> 
> disk info:
> 
> /dev/hda:
>  Model=Maxtor 6E040L0, FwRev=NAR61590, SerialNo=E1B04FFE
>  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=78165360
>  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: (null):
> 
> and CPU info:
> 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 2
> model name      : Intel(R) Pentium(R) 4 CPU 2.60GHz
> stepping        : 9
> cpu MHz         : 2594.690
> cache size      : 512 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 2
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid
> xtpr
> bogomips        : 5144.57
> 
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