From: David Brownell <david-b@pacbell.net>
To: linux-omap-open-source@linux.omap.com
Subject: is dynamic tick working?
Date: Fri, 12 May 2006 19:05:12 -0700 [thread overview]
Message-ID: <200605121905.13405.david-b@pacbell.net> (raw)
On an OSK, using today's GIT tree, I turned on dynamic tick using
sysfs and thought the IRQ rate (32 KHz timer) was odd. So I did
grep tim /proc/int*; sleep 60; grep tim /proc/int*
and saw 104551 IRQs, which is 1742 per second. Too many!! When
I turned dyntick off (on/off via sysfs) the same measurement
gave a more reasonable 7701 IRQs, making 128 per second.
In short, enabling dyntick got me 14x as many IRQs, instead of
shrinking the number of IRQs. Known bug?
- Dave
next reply other threads:[~2006-05-13 2:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-13 2:05 David Brownell [this message]
2006-05-14 10:49 ` is dynamic tick working? Tony Lindgren
2006-05-14 16:19 ` David Brownell
2006-05-14 17:57 ` Imre Deak
2006-05-14 19:20 ` David Brownell
2006-05-14 20:31 ` Imre Deak
2006-05-15 9:22 ` Tony Lindgren
2006-05-15 22:11 ` David Brownell
2006-05-16 6:59 ` Tony Lindgren
2006-05-26 23:44 ` Tony Lindgren
2006-05-15 9:26 ` Tony Lindgren
2006-05-15 17:33 ` Linux On TI Omap850 Vince
2006-05-16 6:52 ` Tony Lindgren
2006-05-16 14:11 ` Brian Swetland
2006-05-16 13:32 ` is dynamic tick working? Imre Deak
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