Jean-Charles Salzeber ha scritto:
On Thu, Jan 20, 2005 at 11:53, [EMAIL PROTECTED] wrote:/sys/block/hda/queue/scheduler is not present on my system, there is a /sys/block/sda/queue/iosched but with other purposes I think.
hi,
which is the best io-scheduler for FTP server ( with IDE-RAID card) ?
Probably the anticipatory scheduler. If you get high load, the CFQ might be better.
Any other tweaks to increase io performance...
hdparm? reiser4? Tuning PCI latencies with setpci?
And not to forget how can I select one on bootup ?
pass elevator=anticipatory as kernel parameter
can i change it after the system is running ?yes, To see the current scheduler on hda:
$ cat /sys/block/hda/queue/scheduler
noop [anticipatory]
To change it:
# modprobe cfq-iosched (if compiled as module)
# echo cfq > /sys/block/hda/queue/scheduler
To have it you need to compile scheduler as modules ? (mine are inside the kernel) and than you can have different schedulers per disk / block-device ?
JC
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