Re: [ERROR] NAKACK.handleXmitReq()

Those might be old retransmit messages, which are received after the 
messages have already been purged. To avoid this, change
- NAKACK.retransmit_timeout: remove 100 and 200: 
retransmit_timeout="300,600,1200,2400,4800"
- STABLE.max_bytes: set it to 2000000 from 400000
- I would also suggest to enable bundling in TCP_NIO: 
enable_bundling="true", this speeds up things

BTW: I get much better results with tcp.xml right now, need to see why

I assume you still receive all messages, correct ?



Gianluca Puggelli wrote:
> Hi all,
>
> I tried to run the perf_test in three 2-way Solaris 10/x86 machines
> but I got a lot of error messages
> like the following:
>
> 806928 [ERROR] NAKACK.handleXmitReq(): - (requester=10.50.4.37:7800,
> local_addr=10.50.4.38:7800)
> message 10.50.4.38:7800::2702582 not found in sent msgs.
> Sent messages: [2706596 - 2742395] (35800)
>
> Can someone explain to me how to avoid them.
>
> Here there are the HW and configuration details:
>
> JVM:
>         Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_08-b03)
>         Java HotSpot(TM) Client VM (build 1.4.2_08-b03, mixed mode)
>
> JGroups version: 2.4CR2
>
> Hw: Three 2-way x86 with Solaris 10
>  - vezer 10.50.3.37
>                - SunOS vezer 5.10 Generic i86pc i386 i86pc
>                - Status of virtual processor 0 as of: 09/14/2006
> 09:53:05 on-line since 08/21/2006 22:24:20.
>                   The i386 processor operates at 2389 MHz, and has an
> i387 compatible floating point processor.
>                 -Status of virtual processor 1 as of: 09/14/2006
> 09:53:05 on-line since 08/21/2006 22:24:23.
>                   The i386 processor operates at 2389 MHz, and has an
> i387 compatible floating point processor.
>
>         oks 10.50.3.38:
>                 - SunOS oks 5.10 Generic i86pc i386 i86pc
>                 - Status of virtual processor 0 as of: 09/14/2006
> 09:51:38 on-line since 08/21/2006 22:27:00.
>                   The i386 processor operates at 1600 MHz, and has an
> i387 compatible floating point processor.
>                 - Status of virtual processor 1 as of: 09/14/2006
> 09:51:38 on-line since 08/21/2006 22:27:03.
>                   The i386 processor operates at 1600 MHz, and has an
> i387 compatible floating point processor.
>
>         oster 10.50.3.40:
>                 - SunOS oster 5.10 Generic i86pc i386 i86pc
>                 - Status of virtual processor 0 as of: 09/14/2006
> 09:55:14 on-line since 08/21/2006 22:27:18.
>                   The i386 processor operates at 2391 MHz, and has an
> i387 compatible floating point processor.
>                 - Status of virtual processor 1 as of: 09/14/2006
> 09:55:14 on-line since 08/21/2006 22:27:21.
>                   The i386 processor operates at 2391 MHz, and has an
> i387 compatible floating point processor.
>
> Stack used: tcp_nio
>
> JVM parameters:
>         -Xms512M
>         -Xmx512M
>         -XX:+PrintClassHistogram
>         -XX:MaxPermSize=364M
>         -XX:PermSize=364M
>         -XX:MaxNewSize=348m
>         -XX:NewSize=348m
>         -XX:SurvivorRatio=128
>         -XX:+UseParNewGC
>         -XX:+UseConcMarkSweepGC
>         -XX:MaxTenuringThreshold=0
>         -XX:CMSInitiatingOccupancyFraction=60
>         -XX:+DisableExplicitGC
>         -verbose:gc
>         -Xloggc:./gc.log
>         -XX:+PrintGCTimeStamps
>         -XX:+PrintGCDetails
>         -XX:+PrintTenuringDistribution
>         -XX:+PrintGCApplicationConcurrentTime
>         -XX:+PrintGCApplicationStoppedTime
>         -server
>         -Dlog4j.configuration=config/log4j.properties
>         -Dresolve.dns=false
>         -Dbind.address=<bind_addr>
>         -Dcom.sun.management.jmxremote
>         -Dcom.sun.management.jmxremote.port=11138
>         -Dcom.sun.management.jmxremote.authenticate=false
>         -Dcom.sun.management.jmxremote.ssl=false
>
> perf_test config file:
>         transport=org.jgroups.tests.perf.transports.JGroupsTransport
>         num_msgs=2000000000
>         msg_size=256
>         num_members=3
>         num_senders=3
>         log_interval=1000000
>         processing_delay=0
>         dump_transport_stats=false
>         jmx=false
>         start_port=7800
>
> thanks and regards
>         gianluca
>
>   

-- 
Bela Ban
Lead JGroups / Manager JBoss Clustering Group
JBoss - a division of Red Hat


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