sslug-teknik team mailing list archive

[Michael Rasmussen <mir@xxxxxxxxxxx>]

On Fri, 25 Oct 2002 19:42:02 +0200, Tobias Kjær Tobiasen wrote:

> Hej
> 
> Jeg glemte lige:
> 
> #hdparm -tT /dev/hda /dev/hdb /dev/hdd
> 
> /dev/hda:
>  Timing buffer-cache reads:   128 MB in  0.32 seconds =400.00
>  MB/sec Timing buffered disk reads:  64 MB in 24.24 seconds = 2.64
>  MB/sec
Hvad skriver hdparm, hvis du blot skriver #hdparm /dev/hda /dev/hdb
/dev/hdd?

Umiddelbart virker det utrologt langsomt med buffered disk reads!

En tilsvarende test på min lille arbejdsmaskine der kører UDMA66
giver følgende resultat:
/dev/hda
 Timing buffer-cache reads:    128 MB in  1.43 seconds = 89.53
MB/sec
 Timing buffered disk reads:  64 MB in  5.57 seconds = 11.50
MB/sec


-- 
Hilsen/Sincerely
Michael Rasmussen

"C makes it easy to shoot yourself in the foot; C++ makes it harder,
but when you do, it blows away your whole leg." - Bjarne Stroustrup
-------------------------------------------------------------------
Fjern NOSPAM fra min adresse, for at sende mig en mail