Bug 171933
Summary: | slow network performance when using bridged interfaces | ||
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Product: | [Fedora] Fedora | Reporter: | optional <from-redhat> |
Component: | kernel | Assignee: | David Miller <davem> |
Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 4 | CC: | alex.kiernan, davej, symeon, wtogami |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | i386 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2005-12-20 03:24:35 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
optional
2005-10-27 21:50:47 UTC
This is probably best brought up with the upstream networking developers at netdev.org The bridging maintainers are mor likely to read that list than this bugzilla. Thanks to Stephen Hemminger on the bridge team. He matched this up with a bug in the 2.6.13 e100 "CPU Cycle Saver" code. Disabling the e100 driver fixed the problem on 2.6.13. The bug is noted as fixed in 2.6.14. 2.6.14-1.1637_FC4 has been released as an update for FC4. Please retest with this update, as a large amount of code has been changed in this release, which may have fixed your problem. Thank you. Its definitely better - the bridge host now seems to have full speed networking performance when talking to non-directly connected hosts. But hosts connected directly through bridged interfaces seem to be much worse talking to the bridge host (but not when they talk through it - performance in that instance seems fine). Was able to install 2.6.14-1.1637. Still having issues similar to Alex Kiernan. Issues seem to be resolved when you ifdown one of the physical bridged interfaces. (eth1 in my case, which is that e100 card). If you ifup the interface again, it does not cause any system slowdowns. 2.6.14-1.1644_FC4smp does not seem to change the performance issues. Still is resolved by ifdown-ing the e100 interface, rmmoding e100, and ifuping the e100 interface. Thanks! This appears to be fixed in kernel-smp-2.6.14-1.1653. It was still not working right in 2.6.14-1.1644. Thanks! |