Thanks for your advice , I'll try
for instance, do you have a firewall in front of your server ? No,iptables is stopped How many concurrent clients do you have ? about 2-3 concurrent connections usually, and may burst to 500 or even more What's the number of incoming connection you are processing per second. 80 on average, maxium up to 800 Is it something you can reproduce, or is it totally random ? seems random How many sockets are opened when you detect the problem (incidentally, do you have a low ulimit setting ?) ulimit is definitely ok , I used to meet ulimit problems when doing benchmark, so this was solved already. ============== >On 8/15/11 10:07 AM, Sariny wrote: >> Sorry, >> >> Mina : 2.0.3 >> OS : CentOS 5.3 x86_64 >> Kernel: 2.6.18-128.el5 >> >> JVM info: >> java version "1.6.0_22" >> Java(TM) SE Runtime Environment (build 1.6.0_22-b04) >> Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03, mixed mode) > >Thanks. I would advise you to upgrade to MINA 2.0.4, and to Java >1.6.0_26. Not that it would solve your issue, but Java 1.6.0_22 is known >to have issues with NIO. > >Now, regarding your issue, it's difficult to tell what could be wrong. >What would help is a bit more description of what's going on when you >detect taht the server does not accept incoming connections. Like, for >instance, do you have a firewall in front of your server ? How many >concurrent clients do you have ? What's the number of incoming >connection you are processing per second. Is it something you can >reproduce, or is it totally random ? How many sockets are opened when >you detect the problem (incidentally, do you have a low ulimit setting ?) > > >-- >Regards, >Cordialement, >Emmanuel Lécharny >www.iktek.com > = = = = = = = = = = = = = = = = = = = = On 8/15/11 10:07 AM, Sariny wrote: > Sorry, > > Mina : 2.0.3 > OS : CentOS 5.3 x86_64 > Kernel: 2.6.18-128.el5 > > JVM info: > java version "1.6.0_22" > Java(TM) SE Runtime Environment (build 1.6.0_22-b04) > Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03, mixed mode) Thanks. I would advise you to upgrade to MINA 2.0.4, and to Java 1.6.0_26. Not that it would solve your issue, but Java 1.6.0_22 is known to have issues with NIO. Now, regarding your issue, it's difficult to tell what could be wrong. What would help is a bit more description of what's going on when you detect taht the server does not accept incoming connections. Like, for instance, do you have a firewall in front of your server ? How many concurrent clients do you have ? What's the number of incoming connection you are processing per second. Is it something you can reproduce, or is it totally random ? How many sockets are opened when you detect the problem (incidentally, do you have a low ulimit setting ?) -- Regards, Cordialement, Emmanuel Lécharny www.iktek.com
