Messages in this thread | | | Subject | Re: [PATCH v2] cpuidle: poll_state: Add time limit to poll_idle() | From | Rik van Riel <> | Date | Thu, 22 Mar 2018 12:32:18 -0400 |
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On Wed, 2018-03-14 at 13:04 +0100, Peter Zijlstra wrote:
> On x86 we don't have to use that time_check_counter thing, > sched_clock() > is really cheap, not sure if it makes sense on other platforms.
Are you sure? I saw a 5-10% increase in CPU use, for a constant query rate to a memcache style workload, with v3 of this patch.
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