Date: Sat, 9 Dec 2000 17:20:24 -0800 From: "David Schwartz" <davids@webmaster.com> To: <freebsd-questions@freebsd.org> Subject: Question about mb_map Message-ID: <NCBBLIEPOCNJOAEKBEAKGEPCMFAA.davids@webmaster.com>
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I have a machine (4.2-STABLE, December 1) with lots of free RAM and a
loadaverage of zero. It's maintaining a few thousand connections, and
network performance has dropped to basically zero. A 'netstat -m' shows:
1739/18432/18432 mbufs in use (current/peak/max):
323 mbufs allocated to data
1416 mbufs allocated to packet headers
311/4608/4608 mbuf clusters in use (current/peak/max)
13824 Kbytes allocated to network (100% of mb_map in use)
2414666 requests for memory denied
293 requests for memory delayed
1062 calls to protocol drain routines
So I've hit the mbuf limit and the mbuf cluser limit at some point in the
past. But nothing appears to be the problem now. The counts for memory
requests denied or delayed are not increasing. For example, here's another
'netstat -m':
1860/18432/18432 mbufs in use (current/peak/max):
421 mbufs allocated to data
1439 mbufs allocated to packet headers
384/4608/4608 mbuf clusters in use (current/peak/max)
13824 Kbytes allocated to network (100% of mb_map in use)
2414666 requests for memory denied
293 requests for memory delayed
1062 calls to protocol drain routines
Any suggestions? Network performance is near-zero now.
DS
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