linux-kernel - Re: gettimeofday(), clock_gettime(), timer

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Date:	Wed, 26 Jul 2006 12:15:53 -0400
From:	John Richard Moser <nigelenki@...cast.net>
To:	Andi Kleen <ak@...e.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: gettimeofday(), clock_gettime(), timer_gettime()

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Andi Kleen wrote:
> John Richard Moser <nigelenki@...cast.net> writes:
> 
>>  - gettimeofday() is slow, or so they say, needing several milliseconds
>> to execute.
> 
> It's not generally true, only sometimes. Please don't spread FUD.
> 

http://lwn.net/Articles/192214/

"X is a big offender, apparently because the gettimeofday() call is
still too slow and maintaining time stamps with interval timers is faster."

Or so they say.  I'm not the one spreading FUD; amusingly it takes me
50uS to run gettimeofday().

> -Andi
> 

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