From: Thiago Robert <robert@inf.ufsc.br>
To: linux-kernel@vger.kernel.org
Subject: Write-combining
Date: Tue, 11 May 2004 11:49:44 -0300 [thread overview]
Message-ID: <40A0E808.2020602@inf.ufsc.br> (raw)
Hello there!
Is there an easy way to be sure about wether the PCI write-combining is
enabled or not for a given memory region?
I'm writting user-level communication software for a Myrinet network. I
use Write PIO and I'm aware that WPIO performance is greatly influencied
by the presence of write combining. Based on the performance I measured
I can only conclude that Write Combining is enabled but I would like to
be sure about it (since I'm planning to publish my research).
Is the default behaviour of the Linux kernel to enable write-combining?
How can I be sure if it is enabled or not?
Thanks in advance.
__________________________
Thiago Robert
next reply other threads:[~2004-05-11 14:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-11 14:49 Thiago Robert [this message]
2004-05-11 15:05 ` Write-combining Sean Neakums
2004-05-11 18:42 ` Write-combining Thiago Robert
-- strict thread matches above, loose matches on Subject: below --
2004-05-12 18:00 Write-combining Venkatesan, Ganesh
2002-02-12 19:41 Write-combining SA
2002-02-12 14:29 Write-combining SA products
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