From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: is dynamic tick working?
Date: Fri, 12 May 2006 19:05:12 -0700
Message-ID: <200605121905.13405.david-b@pacbell.net>
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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