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From: Michael Wang <>
To: LKML <>
Cc: Paul Turner <>, Dhaval Giani <>
Subject: [RFC PATCH 1/4] linsched: remove "process_all_softirqs" in main loop for accuracy
Date: Mon, 16 Apr 2012 11:37:47 +0800	[thread overview]
Message-ID: <> (raw)

From: Michael Wang <>

"process_all_softirqs" will simulate an extra interrupt which will
cause cpu do extra load balance work.

This will make some cpu more active then others, the unfair will
cause inaccuracy.

Signed-off-by: Michael Wang <>
 tools/linsched/hrtimer.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/tools/linsched/hrtimer.c b/tools/linsched/hrtimer.c
index 26be1d8..de88b25 100644
--- a/tools/linsched/hrtimer.c
+++ b/tools/linsched/hrtimer.c
@@ -206,7 +206,6 @@ void linsched_run_sim(int sim_ticks)
 			/* a handler should never leave this state changed */
 			BUG_ON(smp_processor_id() != active_cpu);

-			process_all_softirqs();


             reply	other threads:[~2012-04-16  3:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-16  3:37 Michael Wang [this message]
2012-09-03  3:58 [RFC PATCH 1/4] linsched: remove process_all_softirqs() in main loop for accuracy Michael Wang

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