Date: Sat, 12 Oct 2013 02:10:28 GMT From: sh1970 <mybsd@hotmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/182917: strange out traffic with igb interfaces Message-ID: <201310120210.r9C2ASG3079338@oldred.freebsd.org> Resent-Message-ID: <201310120220.r9C2K0JQ069282@freefall.freebsd.org>
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>Number: 182917 >Category: kern >Synopsis: strange out traffic with igb interfaces >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: Sat Oct 12 02:20:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: sh1970 >Release: freebsd 8.4 stable >Organization: >Environment: FreeBSD 8.4-STABLE FreeBSD 8.4-STABLE #0: Sun Aug 26 18:06:21 UTC 2012 root@:/usr/obj/usr/src/sys/GENERIC i386 >Description: We've got a strange problem with lagg(4) interfaces built on Intel's 82580 chipset igb (dual port 1Gb card). We cannot send over lagg interface more than ~1Gb/s, yet receiving ~2GB over it. Looks like something indicating the problem can be seen here: anri@host:[8:13]~#ifstat -i lagg0 -i igb1 -i igb3 1 lagg0 igb1 igb3 KB/s in KB/s out KB/s in KB/s out KB/s in KB/s out 9116.50 26515.16 4147.70 28871.43 5004.86 23683.31 8423.08 26544.62 3853.22 28980.60 4594.21 23520.97 8796.48 26395.28 4248.46 28344.00 4567.42 23978.17 Note (IN) traffic - everything's ok, about 50% on each igb interfaces and total summary on lagg0. But (OUT) traffic looks weird - there is more traffic on the single igb1 than on lagg0! Tried with default driver came with the system, also the new one igb-2.3.10 from Intel site - no luck. Set net.link.lagg.0.use_flowid=0 not solve the problem. Testing lagg interface built on other cards (em, bce) on the same machine shows expected normal behavior for both directions. >How-To-Repeat: >Fix: My system is freebsd 8.4, use the e1000 driver from freebsd 8.3 , the result is OK . >Release-Note: >Audit-Trail: >Unformatted:
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