This page (revision-69) was last changed on 23-Apr-2022 17:05 by Harry Metske

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Installatie Ubuntu Jaunty Jackalope
Installatie Ubuntu Jaunty Jackalope

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At line 271 added 38 lines
!! Performance tweaks
Taken from [http://www.linuxlinks.com/article/20090927065956844/UbuntuTips-Booting-Part2.html]
* add vm.swappiness=20 to /etc/sysctl.conf
* ''hdparm -tT /dev/sda results :
{{{
gneisenau sysctl.d # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2172 MB in 2.00 seconds = 1086.96 MB/sec
Timing buffered disk reads: 190 MB in 3.03 seconds = 62.78 MB/sec
}}}
{{{
metskem@gladiator:~$ sudo hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 712 MB in 2.00 seconds = 355.74 MB/sec
Timing buffered disk reads: 172 MB in 3.01 seconds = 57.23 MB/sec
}}}
{{{
metskem@interceptor:~$ sudo hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 918 MB in 2.00 seconds = 458.44 MB/sec
Timing buffered disk reads: 120 MB in 3.03 seconds = 39.61 MB/sec
}}}
{{{
root@grafspee:~# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 334 MB in 2.00 seconds = 167.07 MB/sec
Timing buffered disk reads: 58 MB in 3.00 seconds = 19.30 MB/sec
}}}
* change /etc/init.d/rc : ''CONCURRENCY=shell'' => take advantage of dual-core processors
* reprofile the boot sequence to get a good readahead file (/etc/readahead folder)
This page (revision-69) was last changed on 23-Apr-2022 17:05 by Harry MetskeTop