[Building Sakai] ClientAbortException: java.net.SocketException: Broken pipe
Aaron Zeckoski
azeckoski at unicon.net
Fri Nov 1 08:09:15 PDT 2013
There is no magic number but you would definitely not want to exceed
3G for Xmx because if you allow the JVM to start using swap then it
will die very quickly. Garbage collecting swap space causes the JVM to
basically become unresponsive. 2G is probably safe assuming you don't
have a ton of other things running on there. The key is to not set Xmx
any higher than the amount of free ram you have (minus the MaxPerm).
-AZ
On Fri, Nov 1, 2013 at 11:03 AM, Warwick Chapman
<warwickchapman at gmail.com> wrote:
> Aaron, if my VM had 4096M memory and 4096 swap, what should Xmx be?
>
> -- Warwick Bruce Chapman | +27 83 7797 094 | http://warwickchapman.com
>
>
> On Fri, Nov 1, 2013 at 1:30 PM, Aaron Zeckoski <azeckoski at unicon.net> wrote:
>>
>> Looks like MaxPermSize is still in there and you will need to define
>> Xmx or the JVM will use the default for that which is much too small.
>>
>> Also, be aware that the GC printing will slow things down a bit so you
>> don't want to run live with that on. If you need GC stats then use a
>> profiler or jstat to grab a quick snapshot of the memory situation
>> every once in awhile.
>>
>> -AZ
>>
>>
>> On Fri, Nov 1, 2013 at 7:21 AM, Warwick Chapman
>> <warwickchapman at gmail.com> wrote:
>> > Ok, so nothing serious then.
>> >
>> > On another, note, as per my previous thread this morning, you previously
>> > suggested a less specific set of JAVA_OPTS in order to allow the JVM to
>> > autotune (ergonomics). I have taken all but -XX:MaxPermSize=512m out
>> > and am
>> > giving it a bash. Is this ok?
>> >
>> > JAVA_OPTS='-server -d64 -XX:MaxPermSize=512m -Djava.awt.headless=true
>> > -Dhttp.agent=Sakai -XX:+PrintGCDetails -XX:+PrintGCTimeStamps
>> > -verbose:gc'
>> >
>> >
>> > -- Warwick Bruce Chapman | +27 83 7797 094 | http://warwickchapman.com
>> >
>> >
>> > On Fri, Nov 1, 2013 at 1:06 PM, Aaron Zeckoski <azeckoski at unicon.net>
>> > wrote:
>> >>
>> >> Warwick,
>> >> This is typically what that error indicates:
>> >>
>> >>
>> >> http://stackoverflow.com/questions/839314/clientabortexception-java-net-socketexception-connection-reset-by-peer-socket
>> >>
>> >> -AZ
>> >>
>> >>
>> >> On Fri, Nov 1, 2013 at 6:55 AM, Warwick Chapman
>> >> <warwickchapman at gmail.com> wrote:
>> >> > Hi All
>> >> >
>> >> > Any idea what the following error is all about?
>> >> >
>> >> > 2013-11-01 12:51:49,585 WARN http-bio-8080-exec-17
>> >> > org.sakaiproject.util.RequestFilter -
>> >> > ClientAbortException: java.net.SocketException: Broken pipe
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:413)
>> >> > at
>> >> > org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480)
>> >> > at
>> >> > org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:438)
>> >> > at
>> >> >
>> >> > org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:426)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1861)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:961)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:411)
>> >> > at
>> >> > javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>> >> > at
>> >> > javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>> >> > at
>> >> > org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:695)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
>> >> > at
>> >> >
>> >> >
>> >> > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
>> >> > at
>> >> >
>> >> >
>> >> > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
>> >> > at java.lang.Thread.run(Thread.java:662)
>> >> > Caused by: java.net.SocketException: Broken pipe
>> >> > at java.net.SocketOutputStream.socketWrite0(Native Method)
>> >> > at
>> >> > java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>> >> > at
>> >> > java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215)
>> >> > at
>> >> > org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:371)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:240)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:84)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192)
>> >> > at org.apache.coyote.Response.doWrite(Response.java:517)
>> >> > at
>> >> >
>> >> >
>> >> > org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:408)
>> >> > ... 29 more
>> >> >
>> >> > -- Warwick Bruce Chapman | +27 83 7797 094 |
>> >> > http://warwickchapman.com
>> >> >
>> >> > _______________________________________________
>> >> > sakai-dev mailing list
>> >> > sakai-dev at collab.sakaiproject.org
>> >> > http://collab.sakaiproject.org/mailman/listinfo/sakai-dev
>> >> >
>> >> > TO UNSUBSCRIBE: send email to
>> >> > sakai-dev-unsubscribe at collab.sakaiproject.org
>> >> > with a subject of "unsubscribe"
>> >>
>> >>
>> >>
>> >> --
>> >> Aaron Zeckoski - Software Architect - http://tinyurl.com/azprofile
>> >
>> >
>>
>>
>>
>> --
>> Aaron Zeckoski - Software Architect - http://tinyurl.com/azprofile
>
>
--
Aaron Zeckoski - Software Architect - http://tinyurl.com/azprofile
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