Re: Can't sleep less than 20 ms

Andrea Arcangeli (andrea@suse.de)
Fri, 2 Jul 1999 15:37:47 +0200 (CEST)


On Thu, 1 Jul 1999, Dong Liu wrote:

>I know Linux on i386 has a timer resolution of 10 ms, but
>why I can't sleep for 10 ms, I can only sleep at
>interval of 20 , 30, 40 ... ms.
>
>This what happpends
>
>usleep ( <= 10*1000) will sleep for 20 ms
>usleep ( <10*1000 <= 20*1000) will sleep for 30 ms
>usleep ( <20*1000 <= 30*1000) will sleep for 40 ms
>
>I'm runing 2.2.10.

Set the policy of the scheduler as RT.

Andrea

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