Davide Italiano wrote:
On Mon, Nov 5, 2012 at 7:12 AM, Joe Holden <li...@rewt.org.uk> wrote:
Hi guys,
Has some default changed between 9.1-RC2 and HEAD?
On identical machines, one with 9.1-RC2 and one with HEAD from yesterday
(GENERIC) I see the following in systat -v:
9.1:
65 cpu0:timer
10 cpu1:timer
HEAD:
1127 cpu0:timer
22 cpu1:timer
These are Supermicro i3 boxes and as far as I can see they have matching
BIOS config.
Thanks,
J
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Which is your refresh rate for systat?
I generally measure sampling every one second (i.e. systat -vm 1).
Also, are you making your measurements when the system is idle?
In order to trace the source(s) of these interrupts you might consider
to collect data via KTR.
I'm also using a one second refresh rate, the system is entirely idle
and the interupt rate is almost entirely static at 1127, occasionally it
will drop to 1119.
From what I understand the timer is hz/ticks which became dynamic in
9.0, although that behaviour doesn't appear to be in HEAD anymore, at
least on this hardware.
Thanks,
J
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