FreeBSD 8.2 and MPD5 stability issues - update

[Julian Elischer]

On 7/2/11 12:15 PM, Adrian Minta wrote:
> Hi,
> Without FLOWTABLE the system is stable an I was able to increase the
> number of l2tp sessions. A major improvement came when I replaced the
> network card with a multiqueue model (igb). The limit is now around 6300
> active sessions. If I try to go over this limit the mpd5 starts to loose
> old sessions and the number quickly decrease.
> I believe I encounter an internal mpd5 timing issue. Is anybody aware of
> such thing ?

!? 6300 ?!
when I wrote netgraph and Archie wrote mpd I think we were thinking in 
terms of a few tens of sessions.
of course others have done a lot of work on both since then...


> The server is now a dual xeon E5520 and the load is around 6.8 at peak.
>
> The server has igb0 10.42.1.1/16 and 50 aliases.
> My mpd.conf looks like this:
> startup:
>          #configure mpd users
>          set user admin pass admin
>          set user foo bar
>          #configure the console
>          set console self 127.0.0.1 5005
>          set console open
>          #configure the web server
>          set web self 10.42.1.1 5006
>          set web open
>
>          set global l2tptimeout 60
>
> default:
>          load l2tp_server1
>          load l2tp_server2
>          load l2tp_server3
>          load l2tp_server4
>          load l2tp_server5
>          load l2tp_server6
>          load l2tp_server7
>          load l2tp_server8
>          load l2tp_server9
>          load l2tp_server10
>          load l2tp_server11
>          load l2tp_server12
>          load l2tp_server13
>          load l2tp_server14
>          load l2tp_server15
>          load l2tp_server16
>          load l2tp_server17
>          load l2tp_server18
>          load l2tp_server19
>          load l2tp_server20
>          load l2tp_server21
>          load l2tp_server22
>          load l2tp_server23
>          load l2tp_server24
>          load l2tp_server25
>          load l2tp_server26
>          load l2tp_server27
>          load l2tp_server28
>          load l2tp_server29
>          load l2tp_server30
>          load l2tp_server31
>          load l2tp_server32
>          load l2tp_server33
>          load l2tp_server34
>          load l2tp_server35
>          load l2tp_server36
>          load l2tp_server37
>          load l2tp_server38
>          load l2tp_server39
>          load l2tp_server40
>          load l2tp_server41
>          load l2tp_server42
>          load l2tp_server43
>          load l2tp_server44
>          load l2tp_server45
>          load l2tp_server46
>          load l2tp_server47
>          load l2tp_server48
>          load l2tp_server49
>          load l2tp_server50
>
> l2tp_server1:
>          set ippool add pool1 10.1.2.2 10.1.3.254
>          create bundle template B1
>          set iface disable proxy-arp
>          set iface idle 1800
>          set iface enable tcpmssfix
>          set ipcp yes vjcomp
>          set ipcp ranges 10.1.2.1/23 ippool pool1
>          set ipcp dns 10.42.0.1 8.8.4.4
>          set bundle enable compression
>          set ccp yes mppc
>          set mppc yes e40
>          set mppc yes e128
>          set mppc yes stateless
>          create link template L1 l2tp
>          set link action bundle B1
>          set link enable multilink
>          set link yes acfcomp protocomp
>          set link no pap chap
>          set link enable chap
>          set link keep-alive 60 180
>          set auth max-logins 10000
>          set link mtu 1460
>          set l2tp self 10.42.1.1
>          set link enable incoming
> l2tp_server2:
>          set ippool add pool2 10.1.4.2 10.1.5.254
>          create bundle template B2
>          set iface disable proxy-arp
>          set iface idle 1800
>          set iface enable tcpmssfix
>          set ipcp yes vjcomp
>          set ipcp ranges 10.1.4.1/23 ippool pool2
>          set ipcp dns 10.42.0.1 8.8.4.4
>          set bundle enable compression
>          set ccp yes mppc
>          set mppc yes e40
>          set mppc yes e128
>          set mppc yes stateless
>          create link template L2 l2tp
>          set link action bundle B2
>          set link enable multilink
>          set link yes acfcomp protocomp
>          set link no pap chap
>          set link enable chap
>          set link keep-alive 60 180
>          set auth max-logins 10000
>          set link mtu 1460
>          set l2tp self 10.42.1.2
>          set link enable incoming
> .....
> l2tp_server50:
>          set ippool add pool50 10.1.100.2 10.1.101.254
>          create bundle template B50
>          set iface disable proxy-arp
>          set iface idle 1800
>          set iface enable tcpmssfix
>          set ipcp yes vjcomp
>          set ipcp ranges 10.1.100.1/23 ippool pool50
>          set ipcp dns 10.42.0.1 8.8.4.4
>          set bundle enable compression
>          set ccp yes mppc
>          set mppc yes e40
>          set mppc yes e128
>          set mppc yes stateless
>          create link template L50 l2tp
>          set link action bundle B50
>          set link enable multilink
>          set link yes acfcomp protocomp
>          set link no pap chap
>          set link enable chap
>          set link keep-alive 60 180
>          set auth max-logins 10000
>          set link mtu 1460
>          set l2tp self 10.42.1.50
>          set link enable incoming
>
>
>
>
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