What triggers "No Buffer Space Available"?
Marc G. Fournier
scrappy at freebsd.org
Thu May 3 03:14:30 UTC 2007
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'k, I just rebooted the server (messages started again), and netstat -A is
showing 3600 sockets open ... based on jupiter/pluto/venus numbers, this is
what I'd expect to see (~1000 sockets per 30 jails) ... so, over the course of
hte next 2 days, I expect that that will grow to the 11k+ that I saw when I
rebooted, with most of those apparently not attached to an 'Addr' ...
- --On Wednesday, May 02, 2007 17:47:59 -0300 "Marc G. Fournier"
<scrappy at freebsd.org> wrote:
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> - --On Wednesday, May 02, 2007 11:17:02 -0700 John-Mark Gurney
> <gurney_j at resnet.uoregon.edu> wrote:
>
>
>> netstat -A will list the socket address, fstat will list the fd, and what
>> socket it connected to that fd..
>
> Oh wow ... according to this, I have:
>
> mars# wc -l /tmp/output
> 11238 /tmp/output
>
> (minus some header lines) sockets running righ tnow ...
>
> okay, next question ... under 'Active UNIX domain sockets, I see alot that
> have no Addr:
>
> Active UNIX domain sockets
> Address Type Recv-Q Send-Q Inode Conn Refs Nextref Addr
> d06b7480 stream 0 0 0 c969b240 0 0
> private/proxymap
> c969b240 stream 0 0 0 d06b7480 0 0
> ce6fc870 stream 0 0 0 cf744870 0 0
> private/rewrite
> cf744870 stream 0 0 0 ce6fc870 0 0
> ce4b2630 stream 0 0 0 d0cee900 0 0
> private/proxymap
> d0cee900 stream 0 0 0 ce4b2630 0 0
> d0437240 stream 0 0 0 cf716000 0 0
> private/proxymap
> cf716000 stream 0 0 0 d0437240 0 0
> c94f4990 stream 0 0 0 cee6ed80 0 0
> private/rewrite
> cee6ed80 stream 0 0 0 c94f4990 0 0
> d0cefcf0 stream 0 0 0 cb281a20 0 0
> private/rewrite
> cb281a20 stream 0 0 0 d0cefcf0 0 0
> ce0d5240 stream 0 0 0 cb251480 0 0
> private/anvil
>
> Now, the 'Conn' field from the previous line matches the 'Address' line of
> the 'blank Addr' ... so there are two sockets for each Addr? in vs out?
>
> To give reference point ... mars above has 91 jail'd environments running on
> it, its been up 2days, 9hrs now, and has 11k sockets in use ...
>
> Hrmmm ... just checked jupiter, and she has 32 jail with 1080 sockets ...
> venus has 62
> jail with 2819 sockets ... and pluto has 35 jails with 1818 sockets ...
>
> mars is running on average 2x the number of sockets per jail then the other
> servers ...
>
> Is this normal?
>
> mars# grep d067f900 /tmp/output
> d067f900 stream 0 0 0 cafd4c60 0 0
> cafd4c60 stream 0 0 0 d067f900 0 0
>
> There is no 'Addr' related to either of them? I can scroll down pages and
> pages of those types of entries, that don't have any Addr field associated
> with them ...
>
>
>
>>
>> --
>> John-Mark Gurney Voice: +1 415 225 5579
>>
>> "All that I will do, has been done, All that I have, has not."
>> _______________________________________________
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>
>
>
> - ----
> Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
> Email . scrappy at hub.org MSN . scrappy at hub.org
> Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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- ----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email . scrappy at hub.org MSN . scrappy at hub.org
Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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