From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>,
Jeff Garzik <jeff@garzik.org>, Mike Houston <mikeserv@bmts.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 2.6.22-rc2
Date: Tue, 22 May 2007 10:54:12 -0700 [thread overview]
Message-ID: <46532E44.4000701@zytor.com> (raw)
In-Reply-To: <alpine.LFD.0.98.0705212153220.3890@woody.linux-foundation.org>
Linus Torvalds wrote:
>
> I can't really see that being a real problem in this day and age of PCI-X
> etc, but it _used_ to be a possible issue a decade ago. Maybe you've found
> a case where it matters even on modern hardware? We occasionally used to
> set the PCI latency timer to make people happy.
>
> (Not that I'm convinced it even has any semantic meaning on a modern PCI
> system..)
>
The PCI latency counters matter as long as you're talking a PCI or PCI-X
bus. It matters not one iota on anything that pretends to be a PCI bus
but isn't, i.e. PCI Express, HyperTransport, etc.
-hpa
next prev parent reply other threads:[~2007-05-22 17:55 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-19 5:17 Linux 2.6.22-rc2 Linus Torvalds
2007-05-19 6:54 ` Andrey Borzenkov
2007-05-19 14:28 ` [BUG: 2.6.22-rc2] SLAB doesn't like usb_get_configuration() Indan Zupancic
[not found] ` <6101e8c40705190950jb093d65l611995895a182ec0@mail.gmail.com>
2007-05-19 16:51 ` Fwd: " oliver pinter
2007-05-19 18:20 ` Christoph Lameter
2007-05-19 19:33 ` Greg KH
2007-05-19 22:10 ` Indan Zupancic
2007-05-20 12:57 ` Linux 2.6.22-rc2: make -j makes it unresponsive Rafael J. Wysocki
2007-05-20 13:01 ` Krzysztof Halasa
2007-05-20 13:23 ` Rafael J. Wysocki
2007-05-20 21:05 ` Linux 2.6.22-rc2 Mike Houston
2007-05-21 15:45 ` Stephen Hemminger
2007-05-21 17:10 ` Mike Houston
2007-05-21 17:37 ` Stephen Hemminger
2007-05-22 2:58 ` Mike Houston
2007-05-22 4:31 ` Stephen Hemminger
2007-05-22 4:36 ` Jeff Garzik
2007-05-22 4:42 ` Stephen Hemminger
2007-05-22 5:04 ` Linus Torvalds
2007-05-22 17:19 ` Stephen Hemminger
2007-05-22 17:54 ` H. Peter Anvin [this message]
2007-05-22 22:14 ` Mike Houston
2007-05-23 0:00 ` Linus Torvalds
2007-05-23 0:29 ` Stephen Hemminger
2007-05-23 1:53 ` Linus Torvalds
2007-05-23 14:58 ` Stephen Hemminger
2007-05-23 17:39 ` Mike Houston
2007-05-23 17:46 ` Linus Torvalds
2007-05-23 18:04 ` Stephen Hemminger
2007-05-24 18:26 ` Mike Houston
2007-05-24 22:08 ` sky2/pci issues on Gigabyte Stephen Hemminger
2007-05-24 22:48 ` Linus Torvalds
2007-05-24 23:04 ` Stephen Hemminger
2007-05-25 0:01 ` Mike Houston
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