Re: RX performance degradation with e1000e in Linux 2.6.31 / F12
From: Kelvin Ku <hidden>
Date: 2010-02-10 22:13:21
On Wed, Feb 10, 2010 at 12:56:47PM -0600, Michael Cronenworth wrote:
Kelvin Ku wrote:quoted
After upgrading from Linux 2.6.30 (Fedora Core 11) to 2.6.31 (F12), I am experiencing significant packet loss on an Intel 82574L NIC running on the e1000e driver. I was not experiencing this with kernel 2.6.30. I notice 2.6.30 uses e1000e version 0.3.3.4-k4 whereas 2.6.31 uses version 1.0.2-k2.And the driver version would be the significance. It appears there are (very) serious issues with the e1000e driver and the 82574L chip. I'm having to use 2.6.30 on a F12 server with an 82574L to have network connectivity at all. The issue has been reported[1] and it is being investigated. We had a hard time convincing Intel it wasn't a motherboard manufacturer problem. [1] http://sourceforge.net/tracker/?func=detail&aid=2908463&group_id=42302&atid=447449 -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Note that my RX performance issue arises with the latest Intel e1000e driver, 1.1.2-NAPI, and an older Intel driver, 0.5.18.3-NAPI, as well. I can't get an even older version of the driver, 0.4.1.7, to compile on Linux 2.6.31, probably because the kernel API has changed since that driver was released. - Kelvin