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From: Eric Anholt <eric@anholt.net>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 4/4] cpuidle: Hack iowait weighting to avoid C-state reduction for graphics.
Date: Mon,  1 Nov 2010 13:23:44 -0700	[thread overview]
Message-ID: <1288643024-5706-5-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1288643024-5706-1-git-send-email-eric@anholt.net>

Improves nexuiz performance by about 1% on my system.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 drivers/cpuidle/governors/menu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index f508690..9bb5654 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -175,7 +175,7 @@ static inline int performance_multiplier(void)
 	mult += 2 * get_loadavg();
 
 	/* for IO wait tasks (per cpu!) we add 5x each */
-	mult += 10 * nr_iowait_cpu(smp_processor_id());
+	mult += 1000 * nr_iowait_cpu(smp_processor_id());
 
 	return mult;
 }
-- 
1.7.2.3

  parent reply	other threads:[~2010-11-01 20:23 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-01 20:23 [RFC] Hack to avoid C-state reduction during graphics activity Eric Anholt
2010-11-01 20:23 ` [PATCH 1/4] sched: Export io_schedule_timeout() Eric Anholt
2010-11-01 20:23 ` [PATCH 2/4] Add io_ variants of wait_event() and wait_event_interruptible() Eric Anholt
2010-11-01 20:23 ` [PATCH 3/4] drm/i915: Declare waits on GPU as io waits, to reduce C-state reduction Eric Anholt
2010-11-01 20:23 ` Eric Anholt [this message]
2010-11-02 12:20   ` [Intel-gfx] [PATCH 4/4] cpuidle: Hack iowait weighting to avoid C-state reduction for graphics ykzhao
2010-11-02 15:42     ` Eric Anholt
2010-11-02 20:00       ` [Intel-gfx] " Alexey Fisher
2010-11-02 20:44         ` Chris Wilson
2010-11-01 21:00 ` [RFC] Hack to avoid C-state reduction during graphics activity Andrew Lutomirski
2010-11-01 21:43   ` Eric Anholt

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