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Re: Performance overhead of get_cycles_sync
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From:
Ingo Molnar <mingo@...>
To: Andi Kleen <ak@...>
Cc: <linux-kernel@...>, Thomas Gleixner <tglx@...>, Arjan van de Ven <arjan@...>, <dor.laor@...>, kvm-devel <kvm-devel@...>
Subject:
Re: Performance overhead of get_cycles_sync
Date: Tuesday, December 11, 2007 - 4:29 pm
* Ingo Molnar <mingo@elte.hu> wrote:
quoted text
> > Which is not on core2 which was the question about. And if it was > > turned off it wouldn't use get_cycles_sync() at all. > > it is turned off on core2 too: > > # cat /sys/devices/system/clocksource/clocksource0/current_clocksource > acpi_pm
but you are right that it's not turned off on all core2's, so my patch is wrong for them. Ingo --
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Messages in current thread:
Re: Performance overhead of get_cycles_sync
, Ingo Molnar
, (Tue Dec 11, 10:27 am)
Re: [kvm-devel] Performance overhead of get_cycles_sync
, Joerg Roedel
, (Tue Dec 11, 5:26 pm)
Re: Performance overhead of get_cycles_sync
, Arjan van de Ven
, (Tue Dec 11, 12:35 pm)
Re: Performance overhead of get_cycles_sync
, Ingo Molnar
, (Tue Dec 11, 1:03 pm)
Re: Performance overhead of get_cycles_sync
, Andi Kleen
, (Tue Dec 11, 1:23 pm)
Re: Performance overhead of get_cycles_sync
, Ingo Molnar
, (Tue Dec 11, 4:19 pm)
Re: Performance overhead of get_cycles_sync
, Ingo Molnar
, (Tue Dec 11, 4:29 pm)
Re: Performance overhead of get_cycles_sync
, Dor Laor
, (Tue Dec 11, 11:03 am)
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