From: David Miller <davem@davemloft.net>
To: shannon.nelson@intel.com
Cc: netdev@vger.kernel.org, jgarzik@pobox.com
Subject: Re: [PATCH] IOAT: Fix ioatdma descriptor cache miss
Date: Tue, 14 Aug 2007 17:37:35 -0700 (PDT) [thread overview]
Message-ID: <20070814.173735.93210644.davem@davemloft.net> (raw)
In-Reply-To: <BAE9DCEF64577A439B3A37F36F9B691C02DBB8B7@orsmsx418.amr.corp.intel.com>
From: "Nelson, Shannon" <shannon.nelson@intel.com>
Date: Tue, 14 Aug 2007 14:20:02 -0700
> The layout for struct ioat_desc_sw is non-optimal and causes an extra
> cache hit for every descriptor processed. By tightening up the struct
> layout and removing one item, we pull in the fields that get used in
> the speedpath and get a little better performance.
...
> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Patch applied, thanks.
> @@ -347,8 +347,7 @@ ioat_dma_prep_memcpy(struct dma_chan *chan, size_t
> len, int int_en)
Your email client is wrapping long lines in patches, corrupting
them.
I fixed it up this time, but please take care of this in the
future.
prev parent reply other threads:[~2007-08-15 0:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-14 21:20 [PATCH] IOAT: Fix ioatdma descriptor cache miss Nelson, Shannon
2007-08-15 0:37 ` David Miller [this message]
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