Messages in this thread | | | Date | Wed, 15 Sep 2004 11:12:32 +0200 | From | Andi Kleen <> | Subject | Re: [RFC][PATCH] new timeofday core subsystem (v.A0) |
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> I really think a tickless system, for other than UML systems, is a loosing > thing. The accounting overhead on context switch (which increases as the
You can run the accounting independently at much lower frequency (10ms is perfectly fine as 2.4 has proven - i suspect even lower would be ok too) IMHO it should be a sysctl so that users can do a trade off between power consumption and accounting accuracy.
And there is one important special that doesn't need any accounting for user space at all: the idle loop. It still needs some way to account interrupts, but that could be done in do_IRQ or also do with rather low frequency.
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