Date: Fri, 25 Feb 2011 15:01:23 +0100 (CET) From: Martin Matuska <mm@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/155031: igb(4) DEVICE_POLLING does not work with carp(4) Message-ID: <20110225140123.30606EFAC7@mail2.vx.sk> Resent-Message-ID: <201102251410.p1PEAB3a001311@freefall.freebsd.org>
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>Number: 155031 >Category: kern >Synopsis: igb(4) DEVICE_POLLING does not work with carp(4) >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Feb 25 14:10:11 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Martin Matuska >Release: FreeBSD 8.2-RELEASE amd64 >Organization: VX Solution s. r. o. >Environment: >Description: We are using two redundant load-balancing firewall servers with 4-core Xeon processors and 2x 4-port igb(4) interfaces using carp(4) for IP failover. When DEVICE_POLLING is enabled on the igb(4) interfaces, traffic on these interfaces stops. After disabling it again traffic continues normally as before. The traffic throughput on the desired interface is 100-400 MBit/s. The CPU load is about 3 (=75%) because of network interrupts. dev.igb.0.%desc: Intel(R) PRO/1000 Network Connection version - 2.0.7 dev.igb.0.%driver: igb dev.igb.0.%location: slot=0 function=0 dev.igb.0.%pnpinfo: vendor=0x8086 device=0x10e8 subvendor=0x8086 subdevice=0xa02c class=0x020000 A similar issue was already reported in freebsd-stable mailing list: http://lists.freebsd.org/pipermail/freebsd-stable/2011-January/061259.html >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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