My server application slow down some times due the following log
message on tomcat application
com.danga.MemCached.SockIOPool Thu Mar 29 17:49:42 IST 2012 - +++
removing potentially hung connection from busy pool ... socket in pool
for 56476ms
Got Datasource at 29/03/2012 17:50:36
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:36 IST 2012 - +++
removing potentially hung connection from busy pool ... socket in pool
for 101792ms
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:36 IST 2012 - +++
removing potentially hung connection from busy pool ... socket in pool
for 67705ms
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:36 IST 2012 - +++
removing potentially hung connection from busy pool ... socket in pool
for 61006ms
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:36 IST 2012 - +++
removing potentially hung connection from busy pool ... socket in pool
for 61006ms
Got Context at 29/03/2012 17:50:36
Got Datasource at 29/03/2012 17:50:28
com.danga.MemCached.MemCachedClient Thu Mar 29 17:49:55 IST 2012 - +++
+ deserializing class java.util.HashSet
com.danga.MemCached.SockIOPool$SockIO Thu Mar 29 17:50:57 IST 2012 - ++
++ attempting to read from closed socket
Got Initial Context at 29/03/2012 17:50:09
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:49 IST 2012 - ++++
failed to close SockIO obj from deadPool
Got connection at 29/03/2012 17:50:36
Got Context at 29/03/2012 17:51:03
com.danga.MemCached.SockIOPool Thu Mar 29 17:50:57 IST 2012 - ++++
socket or its streams already null in trueClose call
java.io.IOException: ++++ socket or its streams already null in
trueClose call
com.danga.MemCached.MemCachedClient Thu Mar 29 17:50:57 IST 2012 - +++
+ exception thrown while trying to get object from cache for key:
MEMCACHE_MANAGER_KEY
at com.danga.MemCached.SockIOPool
$SockIO.trueClose(SockIOPool.java:1704)
Got connection at 29/03/2012 17:51:03
Got connection at 29/03/2012 17:51:16
at com.danga.MemCached.SockIOPool.selfMaint(SockIOPool.java:
1432)
at com.danga.MemCached.SockIOPool
$MaintThread.run(SockIOPool.java:1497)
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
failed to close SockIO obj from deadPool
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
socket or its streams already null in trueClose call
java.io.IOException: ++++ socket or its streams already null in
trueClose call
at com.danga.MemCached.SockIOPool
$SockIO.trueClose(SockIOPool.java:1704)
at com.danga.MemCached.SockIOPool.selfMaint(SockIOPool.java:
1432)
at com.danga.MemCached.SockIOPool
$MaintThread.run(SockIOPool.java:1497)
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
failed to close SockIO obj from deadPool
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
socket or its streams already null in trueClose call
java.io.IOException: ++++ socket or its streams already null in
trueClose call
at com.danga.MemCached.SockIOPool
$SockIO.trueClose(SockIOPool.java:1704)
Got Initial Context at 29/03/2012 17:51:16
at com.danga.MemCached.SockIOPool.selfMaint(SockIOPool.java:
1432)
com.danga.MemCached.MemCachedClient Thu Mar 29 17:51:16 IST 2012 - +++
+ attempting to read from closed socket
at com.danga.MemCached.SockIOPool
$MaintThread.run(SockIOPool.java:1497)
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
failed to close SockIO obj from deadPool
com.danga.MemCached.SockIOPool Thu Mar 29 17:51:16 IST 2012 - ++++
socket or its streams already null in trueClose call
java.io.IOException: ++++ socket or its streams already null in
trueClose call
at com.danga.MemCached.SockIOPool
$SockIO.trueClose(SockIOPool.java:1704)
at com.danga.MemCached.SockIOPool.selfMaint(SockIOPool.java:
1432)
at com.danga.MemCached.SockIOPool
$MaintThread.run(SockIOPool.java:1497)
java.io.IOException: ++++ attempting to read from closed socket
Got Datasource at 29/03/2012 17:51:03
Got connection at 29/03/2012 17:51:16
at com.danga.MemCached.SockIOPool
$SockIO.readLine(SockIOPool.java:1760)
at
com.danga.MemCached.MemCachedClient.get(MemCachedClient.java:1285)
at
com.danga.MemCached.MemCachedClient.get(MemCachedClient.java:1209)
at
com.vtech.tdpms.blackbox.cacheengine.MemoryCacheUtil.retrieveFromMemCache(MemoryCacheUtil.java:
98)
at
com.vtech.tdpms.blackbox.cacheengine.MemoryCacheUtil.addKeyToMemCacheMangr(MemoryCacheUtil.java:
141)
at
com.vtech.tdpms.blackbox.cacheengine.MemoryCacheUtil.addToMemCache(MemoryCacheUtil.java:
34)
at
com.vtech.tdpms.blackbox.productimpl.helper.hotel.HotelSearchHelper.memCacheResult(HotelSearchHelper.java:
892)
at
com.vtech.appxtension.tdpms.blackbox.productimpl.helper.hotel.WrapHotelSearchHelper.postSearchHTDBProcessing(WrapHotelSearchHelper.java:
633)
at
com.vtech.appxtension.tdpms.blackbox.productimpl.helper.hotel.WrapHotelSearchHelper.searchHotel(WrapHotelSearchHelper.java:
131)
at
com.vtech.tdpms.blackbox.productimpl.helper.hotel.HotelSearchHelper.run(HotelSearchHelper.java:
799)
at java.lang.Thread.run(Thread.java:619)
com.danga.MemCached.MemCachedClient Thu Mar 29 17:51:16 IST 2012 - +++
+ failed to close socket :
OS:Centos 6 64bit
Tomcat:Apache Tomcat Version 6.0.18
Java:java version "1.6.0_14" 64bit
memcached:memcached 1.4.13
Libevent:libevent-2.0.17-stable
Please suggest what can be done.
