Re: System Performances
gustavo halperin(ggh.develop@gmail.com) is reported to have said:
> Hello I have some questions about system performances.
>
> By now I have the current 'hdparm' settings: -m16 -c3 -u1 -Xudma5
> Then the 'hdparm -Tt /dev/hda' show the next results:
> /dev/hda:
> Timing cached reads: 1376 MB in 2.00 seconds = 686.58 MB/sec
> Timing buffered disk reads: 50 MB in 3.02 seconds = 16.53 MB/sec
> But if the configuration is '-m0 -c0 -u0 ' the result from 'hdparm -Tt'
> is the same, so there are any way to improve this Timings ??
>
> Second If I set with 'hdparm' the settings '-S 12' and '-y' always after
> few minutes the drive state back to 'active/idle', that is OK.
>
> Last, the configurations of the "performance-settings Linux VM"
> (/proc/sys/vm/<files>) and the "system wide limit for file handles"
> (/proc/sys/fs/file_max) can improve system behave ? How can I know what
> are the best configurations ??
>
It seem that you have the hdparm package installed but not the hwtools
package. If you install it you can set up /etc/init.d/hwtools to
retain the hdparm settings. Like
if command -v hdparm >/dev/null 2>&1; then
hdparm -q -m32 -a266 -A1 -c3 -d1 -u1 -W0 -S242 /dev/hda
hdparm -q -m16 -a256 -A1 -c3 -d1 -u1 -W0 -S220 /dev/hdb
hdparm -q -d1 /dev/hdc
true
fi
echo " hdparm"
Hope this is what you were looking for.
WT
--
It is practically impossible to teach good programming style to students that
have had prior exposure to BASIC: as potential programmers they are mentally
mutilated beyond hope of regeneration. -- Dijkstra
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