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From: "David S. Miller" <davem@davemloft.net>
To: rlrevell@joe-job.com
Cc: bcollins@ubuntu.com, torvalds@osdl.org, zdzichu@irc.pl,
	gregkh@suse.de, bunk@stusta.de, akpm@osdl.org,
	linux-kernel@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz,
	pcihpd-discuss@lists.sourceforge.net
Subject: Re: State of the Linux PCI and PCI Hotplug Subsystems for 2.6.16-rc5
Date: Thu, 09 Mar 2006 13:07:25 -0800 (PST)	[thread overview]
Message-ID: <20060309.130725.42147030.davem@davemloft.net> (raw)
In-Reply-To: <1141937556.13319.64.camel@mindpipe>

From: Lee Revell <rlrevell@joe-job.com>
Date: Thu, 09 Mar 2006 15:52:35 -0500

> Ubuntu doesn't provide a UP 686 kernel?
> 
> Isn't there a performance hit running an SMP kernel on UP?

There is some cost, but it is mitigated by a patch they include
which nops out all the spinlocks when a UP system is detected.

  parent reply	other threads:[~2006-03-09 21:07 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-06 22:35 Greg KH
2006-03-06 22:47 ` Sam Ravnborg
2006-03-06 23:00   ` Greg KH
2006-03-08 22:26 ` Adrian Bunk
2006-03-08 22:50   ` Greg KH
2006-03-08 23:03     ` Linus Torvalds
2006-03-08 23:18       ` Greg KH
2006-03-08 23:30         ` Linus Torvalds
2006-03-09 18:40           ` Tomasz Torcz
2006-03-09 19:49             ` Linus Torvalds
2006-03-09 20:10               ` Ben Collins
2006-03-09 20:24                 ` Linus Torvalds
2006-03-15 16:03                   ` Ben Collins
2006-03-09 20:52                 ` Lee Revell
2006-03-09 21:06                   ` SMP on UP (Was Re: State of the Linux PCI and PCI Hotplug Subsystems for 2.6.16-rc5) Ben Collins
2006-03-09 21:47                     ` Lee Revell
2006-03-09 21:07                   ` David S. Miller [this message]
2006-03-09 20:37               ` State of the Linux PCI and PCI Hotplug Subsystems for 2.6.16-rc5 Arjan van de Ven
2006-03-09 20:46                 ` Dave Jones
2006-03-09 21:15                   ` Arjan van de Ven
2006-03-08 23:29       ` Andrew Morton
2006-03-08 23:45         ` Dave Hansen
2006-03-08 23:52           ` Andrew Morton
2006-03-09 10:24         ` Martin MOKREJŠ
2006-03-08 23:05     ` Adrian Bunk
2006-03-08 23:18       ` Lee Revell
2006-03-08 23:23         ` Greg KH
2006-03-08 23:34           ` Lee Revell
2006-03-08 23:40             ` Greg KH
2006-03-09  0:03               ` Lee Revell
2006-03-08 23:21       ` Greg KH
2006-03-09  4:01 ` Kenji Kaneshige
2006-03-09  5:34   ` Greg KH
2006-03-09  5:11 ` Lee Revell

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