[SR-Users] TCP SYN only
Daniel-Constantin Mierla
miconda at gmail.com
Tue Sep 9 15:18:29 CEST 2014
Ahh, overlooked in your previous email -- the numbers reported by
sockstats were close to the default value for max connections, so it was
my first thought.
Do you get any error messages in syslog from kamailio?
Cheers,
Daniel
On 09/09/14 15:16, Laurent Schweizer wrote:
>
> Yes I set tcp_max_connections=104096
>
> Laurent
>
> *De :*Daniel-Constantin Mierla [mailto:miconda at gmail.com]
> *Envoyé :* mardi 9 septembre 2014 15:09
> *À :* Laurent Schweizer; Kamailio (SER) - Users Mailing List
> *Objet :* Re: [SR-Users] TCP SYN only
>
> Hello,
>
> have you increased the max connections limit?
>
> - http://www.kamailio.org/wiki/cookbooks/devel/core#tcp_max_connections
>
> The PKG_MEM_POOL_SIZE is more or less same as -m parameter, so you
> don't need to change the sources if you need higher value.
>
> Cheers,
> Daniel
>
> On 09/09/14 14:57, Laurent Schweizer wrote:
>
> Hi,
>
> Yes I check them, the only 2 point that I have actually not tested
> is to change :
>
> - You might have to decrease TCP_BUF_SIZE to a smaller value (e.g 8K)
>
> - You might want to increase PKG_MEM_POOL_SIZE (for large queues)
>
> I’m using Kamailio 3.2.1
>
> I have set:
>
> tcp children to 50
>
> tcp_max_connections=104096
>
> started wit -m 4096 -M 64
>
> with sockstat I have:
>
> sockets: used 2171
>
> TCP: inuse 913 orphan 1 tw 4 alloc 939 mem 29
>
> UDP: inuse 440 mem 372
>
> UDPLITE: inuse 0
>
> RAW: inuse 1
>
> FRAG: inuse 0 memory 0
>
> BR
>
> Laurent
>
> *De :*sr-users-bounces at lists.sip-router.org
> <mailto:sr-users-bounces at lists.sip-router.org>
> [mailto:sr-users-bounces at lists.sip-router.org] *De la part de*
> Daniel-Constantin Mierla
> *Envoyé :* mardi 9 septembre 2014 14:46
> *À :* Kamailio (SER) - Users Mailing List
> *Objet :* Re: [SR-Users] TCP SYN only
>
> Hello,
>
> have you checked the file in the sources located at
> doc/tcp_tunning.txt?
>
> Cheers,
> Daniel
>
> On 09/09/14 14:40, Laurent Schweizer wrote:
>
> Dear all,
>
>
>
>
>
> Since few weeks I have more and more TCP issue, I can see that sometimes the client send a TCP SYN but never get any response.
>
>
>
> 106.123315 62.12.179.104 -> X.X.X.X TCP 39174 > sip [SYN] Seq=0 Win=4380 Len=0 MSS=1380 TSV=4294942209 TSER=0 WS=1
>
> 109.124384 62.12.179.104 -> X.X.X.X TCP 39174 > sip [SYN] Seq=0 Win=4380 Len=0 MSS=1380 TSV=4294942510 TSER=0 WS=1
>
> 111.202946 62.12.179.104 -> X.X.X.X TCP 4993 > sip [SYN] Seq=0 Win=4380 Len=0 MSS=1380 TSV=4294942717 TSER=0 WS=1
>
> 114.204707 62.12.179.104 -> X.X.X.X TCP 4993 > sip [SYN] Seq=0 Win=4380 Len=0 MSS=1380 TSV=4294943018 TSER=0 WS=1
>
>
>
> I have found on internet many doc regarding TCP and max connection issue and I have already done change in sysctl (see below) to increase the number of tcp connection but seems still not ok.
>
>
>
> Any idea ?
>
>
>
> Best regards
>
>
>
> Laurent
>
>
>
>
>
> /net.ipv4.ip_forward = 0/
>
> /net.ipv4.conf.default.rp_filter = 1/
>
> /net.ipv4.conf.default.accept_source_route = 0/
>
> /kernel.sysrq = 0/
>
> /kernel.core_uses_pid = 1/
>
> /net.ipv4.tcp_syncookies = 0/
>
> /net.bridge.bridge-nf-call-ip6tables = 0/
>
> /net.bridge.bridge-nf-call-iptables = 0/
>
> /net.bridge.bridge-nf-call-arptables = 0/
>
> /kernel.msgmnb = 65536/
>
> /kernel.msgmax = 65536/
>
> /kernel.shmmax = 68719476736/
>
> /kernel.shmall = 4294967296/
>
> /net.ipv4.tcp_timestamps = 1/
>
> /net.ipv4.tcp_fin_timeout = 30/
>
> /net.ipv4.tcp_keepalive_time = 1200/
>
> /net.ipv4.tcp_max_syn_backlog = 8192/
>
> /net.ipv4.tcp_max_tw_buckets = 5000/
>
> /fs.file-max = 2097152/
>
> /net.ipv4.ip_local_port_range = 2000 65535/
>
> /net.ipv4.tcp_max_tw_buckets = 1440000/
>
> /net.ipv4.tcp_tw_recycle = 1/
>
> /net.ipv4.tcp_tw_reuse = 1/
>
> /net.core.somaxconn = 65536/
>
> /net.core.netdev_max_backlog = 65536/
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
>
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>
> sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
>
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>
>
>
>
> --
>
> Daniel-Constantin Mierla
>
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -http://www.linkedin.com/in/miconda
>
> Next Kamailio Advanced Trainings 2014 -http://www.asipto.com
>
> Sep 22-25, Berlin, Germany
>
>
>
> --
> Daniel-Constantin Mierla
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -http://www.linkedin.com/in/miconda
> Next Kamailio Advanced Trainings 2014 -http://www.asipto.com
> Sep 22-25, Berlin, Germany
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Next Kamailio Advanced Trainings 2014 - http://www.asipto.com
Sep 22-25, Berlin, Germany
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