From: Terry <hanfang@baidu.com>
To: "Brandeburg, Jesse" <jesse.brandeburg@intel.com>
Cc: netdev@vger.kernel.org
Subject: performance issue of netdev_budget and dev_weight with ixgbe
Date: Fri, 20 Mar 2009 16:48:25 +0800 [thread overview]
Message-ID: <49C35859.7050803@baidu.com> (raw)
In-Reply-To: <F169D4F5E1F1974DBFAFABF47F60C10A1E6EABF2@orsmsx507.amr.corp.intel.com>
Hi Jesse,
I was doing some tuning work for ip-forwarding with oplin cards .
i found that when i set netdev_budget to 64(default is 300),just the
same as dev_weight in ixgbe, i got the highest forwarding rate.
not only in forwarding scenario, but also the "receive and send back"
scenario.
If I change netdev_budget or weight in driver to any other value, the
performace get worse.
how did the ixgbe driver folks pick the value of 64 and how does it
affect the perf?
thanks & rgds
terry
next parent reply other threads:[~2009-03-20 8:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <a06240409c5d5e74a49d0@[129.98.90.227]>
[not found] ` <F169D4F5E1F1974DBFAFABF47F60C10A1E6EABF2@orsmsx507.amr.corp.intel.com>
2009-03-20 8:48 ` Terry [this message]
2009-03-20 17:27 ` performance issue of netdev_budget and dev_weight with ixgbe Brandeburg, Jesse
2009-03-20 22:59 ` David Miller
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