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Re: Sleeping in nanos

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Re: Sleeping in nanos

Subject: Re: Sleeping in nanos
From: Jan Brittenson <email@hidden>
Date: Sat, 03 Feb 2007 00:03:42 -0800

Greg wrote:

So then why do I barely see 1% CPU utilization on linux?

But how accurate is it? When I last dealt with this a few years ago, nanosleep always slept at least 10ms on Linux. Some quick googling shows this still seems to be the case.

nanosleep with a timespec = { 0, 10000 } in a tight loop uses only about 5-7% CPU on a MacBook Pro. So if you simulate the Linux behavior by always rounding up to the nearest 10ms you'll get reasonably similar behavior.

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Re: Sleeping in nanos
From: Ed Wynne <email@hidden>


References:  
  >Sleeping in nanos (From: Greg <email@hidden>)
  >Fwd: Sleeping in nanos (From: Greg <email@hidden>)
  >Re: Sleeping in nanos (From: Ed Wynne <email@hidden>)
  >Re: Sleeping in nanos (From: Greg <email@hidden>)




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