Date: Wed, 3 Jun 2009 18:25:46 GMT From: Mishustin Andrew <1@hnt.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/135222: [igb] low speed routing between two igb interfaces Message-ID: <200906031825.n53IPkIY081718@www.freebsd.org> Resent-Message-ID: <200906031830.n53IU1wb046725@freefall.freebsd.org>
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>Number: 135222 >Category: kern >Synopsis: [igb] low speed routing between two igb interfaces >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jun 03 18:30:01 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Mishustin Andrew >Release: FreeBSD 7.1-RELEASE amd64, FreeBSD 7.2-RELEASE amd64 >Organization: HNT >Environment: FreeBSD test.hnt 7.2-RELEASE FreeBSD 7.2-RELEASE #12: Thu Apr 30 18:28:15 MSD 20 09 admin@test.hnt:/usr/src/sys/amd64/compile/GENERIC amd64 >Description: I made a FreeBSD multiprocesor server to act as simple gateway. It use onboard Intel 82575EB Dual-Port Gigabit Ethernet Controller. I observe traffic speed near 400 Kbit/s. I test both interfaces separately - ftp client work at speed near 1 Gbit/s in both directions. Then I change NIC to old Intel "em" NIC - gateway work at speed near 1 Gbit/s. Looks like a bug in igb driver have an effect upon forwarded traffic. If you try hw.igb.enable_aim=0 The speed is near 1 Mbit/s hw.igb.rxd, hw.igb.txd, "ifconfig -tso" has no effect. Nothing in messages.log netstat -m 516/1674/2190 mbufs in use (current/cache/total) 515/927/1442/66560 mbuf clusters in use (current/cache/total/max) 515/893 mbuf+clusters out of packet secondary zone in use (current/cache) 0/44/44/33280 4k (page size) jumbo clusters in use (current/cache/total/max) 0/0/0/16640 9k jumbo clusters in use (current/cache/total/max) 0/0/0/8320 16k jumbo clusters in use (current/cache/total/max) 1159K/2448K/3607K bytes allocated to network (current/cache/total) 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0/0/0 sfbufs in use (current/peak/max) 0 requests for sfbufs denied 0 requests for sfbufs delayed 0 requests for I/O initiated by sendfile 0 calls to protocol drain routines I use only IPv4 traffic. >How-To-Repeat: On machine with two igb interfaces use rc.conf like this: hostname="test.test" gateway_enable="YES" ifconfig_igb0="inet 10.10.10.1/24" ifconfig_igb1="inet 10.10.11.1/24" And try create heavy traffic between two networks. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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