I upgraded my OpenBSD system to 4.8 last week, and it seems that there
is a problem. Over the weekend, all available memory was chewed up and
the system was page faulting like crazy. After a reboot, I started
watching closely, and memory is being slowly consumed, but none of the
user-mode proceses appear to be increasing in size.
I have poked around a bit and found that "systat pool" is telling me
that "mbpl" is increasing in size by approximately 5 per second with a
request rate probably 10 times that. The "systat mbufs" display shows:
3 users Load 0.37 0.30 0.32 Thu Feb 10
11:30:02 2011
IFACE LIVELOCKS SIZE ALIVE LWM HWM CWM
System 256 315K 20176
2k 19 39
lo0
vr0 2k 8 2 63 8
vr1
vr2
vr3 2k 7 2 63 7
The mbuf count seems to go up at the same rate regardless of network (or
system) load.
Can anyone help me to pin this down further? How can I find out what is
consuming mbufs? I assume that the in-use mbuf count should typically
be fairly small?
Naturally I'm happy to provide dmesg output, etc, but I didn't want to
clutter the list unnecessarily. The machine is a Soekris net5501.
Thanks in advance,
Alan
