Date: Sun, 10 Dec 2000 09:22:59 +0800 From: "James Lim" <jameslpin@pacific.net.sg> To: "David Schwartz" <davids@webmaster.com>, <freebsd-questions@FreeBSD.ORG> Subject: Re: Question about mb_map Message-ID: <005301c06247$bfc47fe0$fa5e78cb@gchang> References: <NCBBLIEPOCNJOAEKBEAKGEPCMFAA.davids@webmaster.com>
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Hi there,
Any errors output from ur console? You might wanna increase
your maxusers and nmbcluster in ur kernel config file.
Maxusers 512
nmbclusters 50000
check out LINT for more information
Hope this Helps
James Lim
Technical Support Executive
Pacific Internet Limited
89 Science Park Drive
#02-05/06 The Rutherford
Singapore 118261
Finger evilfry@sg.freebsd.org for PGP key.
----- Original Message -----
From: "David Schwartz" <davids@webmaster.com>
To: <freebsd-questions@FreeBSD.ORG>
Sent: Sunday, December 10, 2000 9:20 AM
Subject: Question about mb_map
>
> 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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