* Re: [gentoo-user] Performance problem at writing big files and Multitasking
@ 2007-02-06 21:16 99% ` Etaoin Shrdlu
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From: Etaoin Shrdlu @ 2007-02-06 21:16 UTC (permalink / raw
To: gentoo-user
On Tuesday 6 February 2007 21:31, Daniel Pielmeier wrote:
> On the other i recently recognized when i doing some video editing
> i.e. demultiplex the movie with projectx which shows the speed of
> writing video and audio to the disk. It writes about 200MB with about
> 25MB/s then it halts for about 2-3 seconds and starts again writing
> data to the disk, after another 200MB it halts again and starts over
> again and so on. I also recognize the same behavior when i multiplex
> the video and audio together with mplex. What could cause this
> problems
What I/O scheduler are you using? Did you try to experiment with the
deadline or the cfq I/O schedulers?
If you have them enabled in your kernel config, read
Documentation/block/switching-sched.txt and see if things get better
after changing the I/O scheduler for your hard disk.
Of course, your problem might be caused by something else altogether.
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2007-02-06 20:31 [gentoo-user] Performance problem at writing big files and Multitasking Daniel Pielmeier
2007-02-06 21:16 99% ` Etaoin Shrdlu
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