On 3/10/16 11:54 AM, Christopher Schultz wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Rallavagu,
On 3/10/16 2:11 PM, Rallavagu wrote:
From a thread dump and corresponding "top" output it is reported
that the following thread is consuming significant CPU (around
80%)
"http-bio-28080-exec-437" daemon prio=10 tid=0x00007f4acc0de000
nid=0x54ce waiting on condition [0x00007f4b038f7000]
java.lang.Thread.State: TIMED_WAITING (parking) at
sun.misc.Unsafe.park(Native Method) - parking to wait for
<0x000000071846da50> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.
awaitNanos(AbstractQueuedSynchronizer.java:2082)
at
java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java
:467)
at org.apache.tomcat.util.threads.TaskQueue.poll(TaskQueue.java:86)
at
org.apache.tomcat.util.threads.TaskQueue.poll(TaskQueue.java:32)
at
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.jav
a:1068)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.j
ava:1130)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.
java:615)
at java.lang.Thread.run(Thread.java:744)
Considering it is a thread from tomcat's thread pool and it
suggests that it is "java.lang.Thread.State: TIMED_WAITING
(parking)" wonder why this shows up as consuming high CPU. Any
clues would be highly appreciated. Thanks in advance.
Are you sure you have matched-up the correct thread within the JVM
that is using all that CPU?
How are you measuring the CPU usage?
It would the ID output from "top -H" mapping to "Native ID" in thread dump.
Can you post your <Connector> and/or <Executor> configuration?
<Connector port="28080" protocol="HTTP/1.1" URIEncoding="UTF-8"
maxThreads="500"
connectionTimeout="20000"
redirectPort="28443" />
Thanks
- -chris
-----BEGIN PGP SIGNATURE-----
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
iEYEARECAAYFAlbh0Q0ACgkQ9CaO5/Lv0PDDpACfbmueOC3FIVAImoIY6P0GYgla
iUUAnRimWHnwhvNR+q2KKyypxnFcoHBi
=o7Ac
-----END PGP SIGNATURE-----
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
