rychlost cteni a zapisu na disk

[mardon]

mardon napsal(a):
> Dell Poweredge 2400, s hw raidem.
> Potrebovala bych overit rychlost cteni a zapisu na disky v Raidu.
> Jak na to?
  takze jsem dostala takovy vysledek

login as: donicova
donicova na 10.0.0.3's password:
Linux dmz 2.6.18-5-686 #1 SMP Mon Dec 24 16:41:07 UTC 2007 i686

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have new mail.
Last login: Tue Jul  1 14:50:38 2008 from 10.0.0.46
donicova na dmz:~$ su -
Password:
dmz:~# last
donicova pts/0        10.0.0.46        Wed Jul  2 14:23   still logged in
donicova pts/0        10.0.0.46        Tue Jul  1 14:50 - 15:13  (00:22)
reboot   system boot  2.6.18-5-686     Tue Jul  1 14:46 - 14:23  (23:37)
donicova pts/0        10.0.0.46        Tue Jul  1 10:33 - down   (04:08)

wtmp begins Tue Jul  1 10:33:50 2008
dmz:~# mc


























dmz:~# man hparm
No manual entry for hparm
dmz:~# man hdparm
No manual entry for hdparm
dmz:~# man clear
Reformatting clear(1), please wait...
clear(1) 
clear(1)

NAME
        clear - clear the terminal screen

SYNOPSIS
        clear

DESCRIPTION
        clear clears your screen if this is possible.  It looks in the 
environ-
        ment for the terminal type and then in the terminfo database to 
  figure
        out how to clear the screen.

SEE ALSO
        tput(1), terminfo(5)

 
clear(1)
dmz:~# clear
dmz:~# cd /home
dmz:/home# cd /donicova
-su: cd: /donicova: No such file or directory
dmz:/home# ls
app  donicova  lost+found  radekk
dmz:/home# cd donicova
dmz:/home/donicova# ls
afaapps-2.6-0.tar.gz  soubor1  soubor2  soubor6
dmz:/home/donicova# mc






































dd if=/dev/zero of=soubor bs=1M count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 551.122 seconds, 7.8 MB/s

dd if=soubor of=/dev/null bs=1M count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 104.364 seconds, 41.2 MB/s

Kde hledat pricinu pomaleho zapisu na disk?