Date: Tue, 21 Apr 1998 03:35:41 GMT From: mike@sentex.net (Mike Tancsa) To: dwhite@resnet.uoregon.edu (Doug White) Cc: questions@FreeBSD.ORG Subject: Re: routers, kernel parameters and bizarro netstat -m output Message-ID: <353c1249.701774848@mail.sentex.net> In-Reply-To: <Pine.BSF.3.96.980419220509.8564W-100000@gdi.uoregon.edu> References: <Pine.BSF.3.96.980419220509.8564W-100000@gdi.uoregon.edu>
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On Sun, 19 Apr 1998 22:07:37 -0700 (PDT), in
sentex.lists.freebsd.questions you wrote:
>If you're handling lots of TCP connections (which routers generally
>don't), then you want to use some options to increase the number of mbufs.
>But I don't think you need to for a router.
Yes, I imagine blatting packets around from interface to interface
shouldnt require too many TCP connections to the machine at all.
>> The machine I am readying gives some numbers at initial bootup that are a
>> little confusing. Why for example would a machine that has yet to do
>> anything really, come up with value like this
>>
>> temp-iolite# netstat -m
>> 199 mbufs in use:
>> 194 mbufs allocated to data
>> 1 mbufs allocated to packet headers
>> 3 mbufs allocated to protocol control blocks
>> 1 mbufs allocated to socket names and addresses
>> 192/206 mbuf clusters in use
> ^^^^^^^
However I am a little worried that I cant seem to get the amount of
mbufs in use to available at such a close ratio. Should not there be
way more free ? I thought these values had hard limits and do not
grow ?
% netstat -m
199 mbufs in use:
194 mbufs allocated to data
1 mbufs allocated to packet headers
3 mbufs allocated to protocol control blocks
1 mbufs allocated to socket names and addresses
192/194 mbuf clusters in use
412 Kbytes allocated to network (99% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Is what I get at initial bootup with MAXUSERS set to 128....
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