The following reply was made to PR kern/122295; it has been noted by GNATS.
From: "Manuel Kasper" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Subject: Re: kern/122295: [bge] bge Ierr rate increase (since 6.0R) [regression]
Date: Wed, 25 Jun 2008 09:48:29 +0200
We've been experiencing the same issue with BCM5704 B0 in HP ProLiant
DL360 G4 servers. The Ierrs are correlated with packet loss (which is
why we noticed the problem in the first place); however for us, the
patch in <http://marc.info/?l=3Dfreebsd-net&m=3D116838816601104&w=3D2>
completely fixes the problem and doesn't seem to introduce any problems
with link state detection (cable disconnect/reconnect, changing link
speed on remote end etc. all work fine).
Also, OpenBSD already has essentially the same fix (with some dubious
style changes) in its repository:
<http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pci/if_bge.c#rev1.221
>
The problem appears in both FreeBSD 6.3-RELEASE and 7.0-RELEASE. This is
how things look without the fix (regardless of what link speed is used):
Router#ping 192.168.4.1 repeat 1000 size 1500
Type escape sequence to abort.
Sending 1000, 1500-byte ICMP Echos to 192.168.4.1, timeout is 2 seconds:
!!
!!
!!
!!
!!
!!
!!
!!
!!.!.!.!.!.!.!.!.!.!.!.!.!.!.!.!.!.!!!
!!
!!
!!
!!
!!
Success rate is 98 percent (983/1000), round-trip min/avg/max =3D 1/1/4 =
ms
-> Pings from Cisco routers are especially likely to show the issue, as
apparently mii_tick() and the pings from the Cisco occur synchronously
for a while. TCP throughput isn't affected very much.
Related dmesg output:
bge0: mem 0xfdd7-0xfdd7
irq 25 at device 2.0 on pci2
miibus1: on bge0
brgphy0: on miibus1
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:18:71:e4:xx:xx
pciconf -lv:
[EMAIL PROTECTED]:2:0: class=3D0x02 card=3D0x00d00e11 chip=3D0x164814e4 =
rev=3D0x10
hdr=3D0x00
vendor =3D 'Broadcom Corporation'
device =3D 'BCM5704 NetXtreme Dual Gigabit Adapter'
class=3D network
subclass =3D ethernet
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