From: James Courtier-Dutton <James@superbug.co.uk>
To: Arjan van de Ven <arjan@infradead.org>
Cc: John Richard Moser <nigelenki@comcast.net>, linux-kernel@vger.kernel.org
Subject: Re: Can context switches be faster?
Date: Fri, 13 Oct 2006 12:05:39 +0100 [thread overview]
Message-ID: <452F7303.6070303@superbug.co.uk> (raw)
In-Reply-To: <1160678231.3000.451.camel@laptopd505.fenrus.org>
Arjan van de Ven wrote:
> On Thu, 2006-10-12 at 14:25 -0400, John Richard Moser wrote:
>
>
>> - Does the current code act on these behaviors, or just flush all
>> cache regardless?
>
> the cache flushing is a per architecture property. On x86, the cache
> flushing isn't needed; but a TLB flush is. Depending on your hardware
> that can be expensive as well.
>
So, that is needed for a full process context switch to another process.
Is the context switch between threads quicker as it should not need to
flush the TLB?
James
next prev parent reply other threads:[~2006-10-13 11:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-12 15:44 Can context switches be faster? John Richard Moser
2006-10-12 15:53 ` John Richard Moser
2006-10-12 17:19 ` Russell King
2006-10-12 18:25 ` John Richard Moser
2006-10-12 18:37 ` Arjan van de Ven
2006-10-12 18:56 ` John Richard Moser
2006-10-12 19:02 ` Arjan van de Ven
2006-10-13 11:05 ` James Courtier-Dutton [this message]
2006-10-13 14:51 ` Chase Venters
2006-10-12 18:20 ` Phillip Susi
2006-10-12 18:29 ` John Richard Moser
2006-10-13 2:53 ` Andrew James Wade
2006-10-13 5:29 ` John Richard Moser
2006-10-13 16:56 ` Andrew James Wade
2006-10-13 17:24 ` John Richard Moser
2006-10-12 19:57 ` Chris Friesen
2006-10-12 20:23 ` John Richard Moser
2006-10-12 20:29 ` Arjan van de Ven
2006-10-12 20:36 ` John Richard Moser
2006-10-12 20:35 ` Jeremy Fitzhardinge
2006-10-13 23:32 ` Andreas Mohr
2006-10-13 23:47 ` David Lang
2006-10-14 0:14 ` Jeremy Fitzhardinge
2006-10-14 0:30 ` Alan Cox
2006-10-14 0:14 ` Jeremy Fitzhardinge
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