linux-kernel - [PATCH] softlockup: re-increase hung tasks check from 2 minutes to 8 minutes

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Date:	Fri, 06 May 2011 11:35:26 -0400
From:	Jeff Mahoney <jeffm@...e.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mandeep Singh Baines <msb@...gle.com>
Subject: [PATCH] softlockup: re-increase hung tasks check from 2 minutes to
 8 minutes

 Commit e162b39a, which moved the soft lockup code around a bit,
 accidentally reverted commit fb822db4, which extended the soft lockup
 timeout from 2 minutes to 8 minutes.

 This patch restores it to 8 minutes.

 From the original patch:
 >Andrew says:
 >
 >> Seems that about 100% of the reports we get of this warning triggering
 >> are sys_sync, transaction commit, etc.
 >
 >increase the timeout. If it still triggers for people, we can kill it.

Originally-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Jeff Mahoney <jeffm@...e.com>
---

 kernel/hung_task.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -33,7 +33,7 @@ unsigned long __read_mostly sysctl_hung_
 /*
  * Zero means infinite timeout - no checking done:
  */
-unsigned long __read_mostly sysctl_hung_task_timeout_secs = 120;
+unsigned long __read_mostly sysctl_hung_task_timeout_secs = 480;
 
 unsigned long __read_mostly sysctl_hung_task_warnings = 10;
 
-- 
Jeff Mahoney
SUSE Labs
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