[PATCH][ 1/5] sched: dont renice kernel threads

From: Con Kolivas
Date: Mon Mar 26 2007 - 22:09:27 EST


The practice of renicing kernel threads to negative nice values is of
questionable benefit at best, and at worst leads to larger latencies when
kernel threads are busy on behalf of other tasks.

Signed-off-by: Con Kolivas <kernel@xxxxxxxxxxx>
---

kernel/workqueue.c | 2 --
1 file changed, 2 deletions(-)

Index: linux-2.6.21-rc5-sd/kernel/workqueue.c
===================================================================
--- linux-2.6.21-rc5-sd.orig/kernel/workqueue.c 2007-03-26 11:03:31.000000000 +1000
+++ linux-2.6.21-rc5-sd/kernel/workqueue.c 2007-03-27 11:52:54.000000000 +1000
@@ -355,8 +355,6 @@ static int worker_thread(void *__cwq)
if (!cwq->freezeable)
current->flags |= PF_NOFREEZE;

- set_user_nice(current, -5);
-
/* Block and flush all signals */
sigfillset(&blocked);
sigprocmask(SIG_BLOCK, &blocked, NULL);

--
-ck
-
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