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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [5578] Increase default IO timeout from 10ms to 5s |
Date: | Fri, 31 Oct 2008 15:13:21 -0500 |
User-agent: | Thunderbird 2.0.0.17 (X11/20080925) |
Jamie Lokier wrote:
Anthony Liguori wrote:With this patch, I see the number of wake-ups with an idle dynamic ticks guest drop from 80 per second to about 15 times per second.That's great, it really is, but shouldn't it be less than that? Did you look at the wakeup rate shown by powertop in the guest, to see how many extra wakeups are caused by QEMU internals?
I don't have a guest handy that I could run powertop on, but I know of at least a few timers that can be gotten rid of (like the rtc timers).
Regards, Anthony Liguori
-- Jamie
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