Re: I/O problems in 2.4.19/2.4.20/2.4.21-rc3

[William Lee Irwin III]

On Sat, May 24, 2003 at 04:19:40PM +0200, Marc-Christian Petersen wrote:
> --- old/kernel/sched.c	2003-05-24 14:45:57.000000000 +0200
> +++ 2.5-mcp/kernel/sched.c	2003-05-24 16:18:42.000000000 +0200
> @@ -65,7 +65,7 @@
>   * they expire.
>   */
>  #define MIN_TIMESLICE		( 10 * HZ / 1000)
> -#define MAX_TIMESLICE		(200 * HZ / 1000)
> +#define MAX_TIMESLICE		( 10 * HZ / 1000)
>  #define CHILD_PENALTY		50
>  #define PARENT_PENALTY		100
>  #define EXIT_WEIGHT		3

This looks highly suspicious as it essentially removes dynamic timeslice
sizing. If this fixes something, then dynamic timeslice heuristics are
going wrong somewhere that should be properly described and handled, not
this kind of shenanigan.

-- wli