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Date:      Tue, 31 Jan 2017 20:05:19 +0100
From:      =?iso-8859-2?Q?Radek_Krej=E8a?= <radek.krejca@starnet.cz>
To:        "'freebsd-questions@freebsd.org'" <freebsd-questions@freebsd.org>
Subject:   A lot of mbufs allocated
Message-ID:  <DEFF535176BF364CB27886BB97947BB719CC6569@EXCHANGE.mail.starnet.cz>

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Hello,

I have problem with freezing FreeBSD boxes with PF on [zone: mbuf_cluster] =
kern.ipc.nmbclusters limit reached last two months. But theres no evidence =
(or I dont know, what I have to check yet) of huge traffic. If I can connec=
t to server yet, I can see, that clusters are really exhausted:

206604/6681/213285 mbufs in use (current/cache/total)
206603/3697/210300/250866 mbuf clusters in use (current/cache/total/max)
206603/3640 mbuf+clusters out of packet secondary zone in use (current/cach=
e)

But why? How I can check what consume this memory? netstat -an, pfctlss -ss=
 shows nothing unusual. What I can check else?

Another question - there are sins that freebsd 10.3 has different access to=
 manage memory clusters, as I can see on graphs over snmp.

And last strange difference between 10.1 and 10.3 on graphs. First is the s=
ame hardware, but freebsd 10.1, second 10.3.=20

https://postimg.org/image/5i7izm6rx/
https://postimg.org/image/j0efbwix9/

What else can I check?

Thank you very much.
Radek




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