Date: Thu, 8 Feb 2001 12:09:46 +0100 (CET) From: dirk.meyer@dinoex.sub.org To: FreeBSD-gnats-submit@freebsd.org Subject: i386/24949: mbuf memory leak in de0 driver Message-ID: <200102081109.f18B9kw11306@net2.dinoex.sub.org>
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>Number: 24949
>Category: i386
>Synopsis: mbuf memory leak in de0 driver
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Feb 08 03:20:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Dirk Meyer
>Release: FreeBSD 4.2.-RELEASE i386
>Organization:
privat
>Environment:
FreeBSD 4.2-RELEASE /usr/obj/data/src/sys/GENERIC i386
Gerneric Kernel
Apache Webserer, no connection to the internet
/kernel: de0: <Digital 21041 Ethernet> port 0x9400-0x947f \
mem 0xe0800000-0xe080007f irq 12 at device 10.0 on pci0
/kernel: de0: SMC 21041 [10Mb/s] pass 2.1
/kernel: de0: address 00:e0:29:36:5d:94
/kernel: sym0: <895> port 0x9000-0x90ff mem 0xdf800000-0x
/kernel: de0: enabling 10baseT port
FreeBSD 4.2-RELEASE /usr/obj/data/src/sys/GENERIC i386
Gerneric Kernel
Apache Webserer, Squid-Proxy
/kernel.old: de0: enabling Full Duplex 10baseT port
/kernel: de0: <Digital 21041 Ethernet> rev 0x21 int a irq 5 on pci0.9.0
/kernel: de0: SMC 21041 [10Mb/s] pass 2.1
/kernel: de0: address 00:e0:29:36:e2:df
/kernel: de1: <Digital 21041 Ethernet> rev 0x21 int a irq 10 on pci0.10.0
/kernel: de1: SMC 21041 [10Mb/s] pass 2.1
/kernel: de1: address 00:e0:29:49:8d:3e
/kernel: de0: enabling 10baseT port
/kernel: de1: enabling 10baseT port
/kernel: de0: enabling 10baseT port
/kernel: de0: enabling Full Duplex 10baseT port
>Description:
Network operations start to slow down times 2 and more.
Logs of mbuf may help, Lines with "0" omitted.
-------------
$ netstat -m
101/432/4096 mbufs in use (current/peak/max):
68 mbufs allocated to data
33 mbufs allocated to packet headers
34/206/1024 mbuf clusters in use (current/peak/max)
520 Kbytes allocated to network (16% of mb_map in use)
$ ifconfig de0 down
$ netstat -m
2/432/4096 mbufs in use (current/peak/max):
1 mbufs allocated to data
1 mbufs allocated to packet headers
0/206/1024 mbuf clusters in use (current/peak/max)
520 Kbytes allocated to network (16% of mb_map in use)
$ ifconfig de0 up
$ netstat -m
34/432/4096 mbufs in use (current/peak/max):
33 mbufs allocated to data
1 mbufs allocated to packet headers
32/206/1024 mbuf clusters in use (current/peak/max)
520 Kbytes allocated to network (16% of mb_map in use)
-------------
319/1152/4096 mbufs in use (current/peak/max):
240 mbufs allocated to data
79 mbufs allocated to packet headers
111/422/1024 mbuf clusters in use (current/peak/max)
1132 Kbytes allocated to network (36% of mb_map in use)
156/1152/4096 mbufs in use (current/peak/max):
83 mbufs allocated to data
73 mbufs allocated to packet headers
73/422/1024 mbuf clusters in use (current/peak/max)
1132 Kbytes allocated to network (36% of mb_map in use)
188/1152/4096 mbufs in use (current/peak/max):
115 mbufs allocated to data
73 mbufs allocated to packet headers
105/422/1024 mbuf clusters in use (current/peak/max)
1132 Kbytes allocated to network (36% of mb_map in use)
60/1152/4096 mbufs in use (current/peak/max):
54 mbufs allocated to data
6 mbufs allocated to packet headers
53/422/1024 mbuf clusters in use (current/peak/max)
1132 Kbytes allocated to network (36% of mb_map in use)
92/1152/4096 mbufs in use (current/peak/max):
86 mbufs allocated to data
6 mbufs allocated to packet headers
85/422/1024 mbuf clusters in use (current/peak/max)
1132 Kbytes allocated to network (36% of mb_map in use)
-------------
>How-To-Repeat:
I have no idea what causes this.
But another server with and xl0 interface works fine.
>Fix:
hack:
ifconfig down / ifconfig up seems to keep the serrver useable
>Release-Note:
>Audit-Trail:
>Unformatted:
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