linux-kernel - Re: Can context switches be faster?

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Message-ID: <452EA766.80307@comcast.net>
Date:	Thu, 12 Oct 2006 16:36:54 -0400
From:	John Richard Moser <nigelenki@...cast.net>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Chris Friesen <cfriesen@...tel.com>, linux-kernel@...r.kernel.org
Subject: Re: Can context switches be faster?

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Arjan van de Ven wrote:
>> ther uniprocessor machines.
>> That's a load more descriptive :D
>>
>> 0.890 uS, 0.556uS/cycle, that's barely 2 cycles you know.  (Pentium M)
>> PPC performs similarly, 1 cycle should be about 1uS.
>>
>>> Chris
> 
> you have your units off; 1 cycle is 1 nS not 1 uS  (or 0.556 nS for the
> pM)

Ah, right right.  Nano is a billion, micro is a million.  How did I get
that mixed up.

So that's barely two THOUSAND cycles.  Which is closer to what I
expected (i.e., not instant)


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