Hi, Could also be your OS that refuses connections because of high load (have seen this on my centOS box)
see http://www.nabble.com/forum/ViewPost.jtp?post=12413643&framed=y&skin=16868 Maarten On Dec 20, 2007 9:08 AM, chinadeng <[EMAIL PROTECTED]> wrote: > > thanks your reply very much; > It is strongly improve the throughput of the server,when i reset the > SocketAcceptorConfig blacklog parameter . > The problem is still exst.when 300 clients connect ,10clients will be > refused,can not connect successfuly; > how can i do it now?? > > Qi wrote: > > > > Hi there, > > > > Have you tried setting a higher value for backlog yet? > > It's a parameter that you can tune around with in SocketAcceptorConfig, > > which determines how many incoming TCP connections your underlying system > > would try to queue up if no enough resources can be allocated to handle > > these connection requests. If such a limit is reached, further requests > > could be dropped. Since you mentioned connection requests were arriving in > > a small time frame, I have a strong feeling this parameter is the cause. > > > > Please See > > "Note about socket backlogs" section on http://xrl.us/bc52m and > > http://xrl.us/bc52o for more details. > > > > > Cheers, > > Qi > > > > > > chinadeng wrote: > >> > >> server can not detect the 60 connections,not session closed(session is > >> not opened at all), > >> in other word ,when 300 clients connect ,server only can hanlder parts > >> of clients(not all clients) > >> > >> Trustin Lee wrote: > >>> > >>> What do you mean by 'discarded'? Are the 60 connections get closed? > >>> Are you notified with sessionOpened or sessionClosed? > >>> > >>> Trustin > >>> > >>> On Dec 20, 2007 11:48 AM, chinadeng <[EMAIL PROTECTED]> wrote: > >>>> > >>>> Hi: > >>>> when 300 client connect to my servers at almost in same time ,but the > >>>> server only can handle 240 client ,60 client will be discarded. > >>>> my server codes like fellowing : > >>>> InetSocketAddress serverAddress1 = new InetSocketAddress(8008); > >>>> DemuxingProtocolCodecFactory dpcf = new > >>>> DemuxingProtocolCodecFactory(); > >>>> > >>>> dpcf.register(new CliEntCmdDeconder()); > >>>> dpcf.register(new CliEntEncoder()); > >>>> > >>>> SocketAcceptor acceptor = new > >>>> SocketAcceptor(Runtime.getRuntime().availableProcessors() + 1, > >>>> Executors.newCachedThreadPool()); > >>>> > >>>> SocketAcceptorConfig cfg = new SocketAcceptorConfig(); > >>>> cfg.setReuseAddress(true); > >>>> DefaultIoFilterChainBuilder chain = cfg.getFilterChain(); > >>>> chain.addLast("logger", new LoggingFilter()); > >>>> chain.addLast("protocol", new ProtocolCodecFilter(dpcf)); > >>>> System.out.println("long on ...."); > >>>> DemuxingIoHandler iohanlder=new DemuxingIoHandler(); > >>>> > >>>> iohanlder.addMessageHandler(clicmdbro.class, new > >>>> CliEntCmdHandler(testb)); > >>>> > >>>> try > >>>> { > >>>> acceptor.bind(serverAddress1,iohanlder, cfg); > >>>> } catch (IOException e) > >>>> { > >>>> // TODO Auto-generated catch block > >>>> e.printStackTrace(); > >>>> } > >>>> how can i ressolve the problem?? > >>>> Thanks in Advance > >>>> -- > >>>> View this message in context: > >>>> http://www.nabble.com/How-can-i-improve-the-total-numbers-of-session-which-server-will--handle-connects-from-client-tp14429723s16868p14429723.html > >>>> Sent from the Apache MINA Support Forum mailing list archive at > >>>> Nabble.com. > >>>> > >>> > >>> > >>> > >>> -- > >>> what we call human nature is actually human habit > >>> -- > >>> http://gleamynode.net/ > >>> -- > >>> PGP Key ID: 0x0255ECA6 > >>> > >>> > >> > >> > > > > > > -- > View this message in context: > http://www.nabble.com/How-can-i-improve-the-total-numbers-of-session-which-server-will--handle-connects-from-client-tp14429723s16868p14432306.html > > Sent from the Apache MINA Support Forum mailing list archive at Nabble.com. > >
