RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Mark, Thanks for the info - I think we will focus on migrating to the 8.5.x branch first. If we experience the same issue on that branch I will restart our investigation and might come back with additional debugging information to see if we can identify the root cause. Thanks for your

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 19/01/2018 14:35, Toom Andreas wrote: > Hi Mark, > > Sorry for the late reply, it has been a couple of busy days. > > We are running our application on two nodes and we have seen the issue on > both nodes. These machines are running quad core cpus. What we have usually > seen is that the

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Rainer, Thanks for your reply! We did a restart of the application earlier this week and so far the cpu usage is at normal levels. If/when the cpu usage goes up I will check with your suggested parameters! Best regards, Andreas -Original Message- From: Rainer Jung

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Mark, Sorry for the late reply, it has been a couple of busy days. We are running our application on two nodes and we have seen the issue on both nodes. These machines are running quad core cpus. What we have usually seen is that the application jvm process is consuming 100% (basically one

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Greg, Thanks for looking into this issue. Unfortunately I am 100% sure we are running Tomcat 8.0.47 so the referenced patch/fix is already applied. Best regards, Andreas -Original Message- From: Greg Huber [mailto:gregh3...@gmail.com] Sent: den 18 januari 2018 14:56 To: Tomcat

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 1/18/2018 7:45 AM, Rainer Jung wrote: Just an addition to one of Mark's questions: Am 17.01.2018 um 22:20 schrieb Mark Thomas: Is it always the same threads generating the load or does it move between threads? Just in case Andreas is not aware: one can check with "top -H -p ". Using -H

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Following this thread, I run the same setup, apache/mod_jk/ tomcat. There was a problem a while back where the cpu went to max for me, as my server is slow and thread blocking more of a possibility. https://bz.apache.org/bugzilla/show_bug.cgi?id=58151 Although this was in version 8.0.23, are

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Just an addition to one of Mark's questions: Am 17.01.2018 um 22:20 schrieb Mark Thomas: Is it always the same threads generating the load or does it move between threads? Just in case Andreas is not aware: one can check with "top -H -p ". Using -H lets top show one line per thread instead

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 16/01/18 23:21, Mark Thomas wrote: > On 16/01/18 09:21, Toom Andreas wrote: >> Hi Mark, >> >> We pulled out a CPU Call Tree using JVisualVM instead of YourKit and I have >> uploaded a screenshot of it here: https://imgur.com/a/mqYxn >> >> There is not much extra information compared to the

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 16/01/18 09:21, Toom Andreas wrote: > Hi Mark, > > We pulled out a CPU Call Tree using JVisualVM instead of YourKit and I have > uploaded a screenshot of it here: https://imgur.com/a/mqYxn > > There is not much extra information compared to the java thread dump in my > initial post but it

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Mark, We pulled out a CPU Call Tree using JVisualVM instead of YourKit and I have uploaded a screenshot of it here: https://imgur.com/a/mqYxn There is not much extra information compared to the java thread dump in my initial post but it highlights in which code branch/method call most of

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi. On 12.01.2018 11:06, Toom Andreas wrote: Hi André, Thanks for your reply! The Tomcat Connector connection_pool_timeout is specified in seconds and the Tomcat ajp connector connectionTimeout is specified in milliseconds so both sides have the same value. This is the recommended setting.

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi Mark, Thanks for the reply! We will try got get some additional info and get back to you as soon as possible! Best regards, Andreas -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: den 12 januari 2018 11:27 To: Tomcat Users List

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 12/01/18 06:58, Toom Andreas wrote: > Hi, > > We are having an issue with an application running Apache Tomcat 8.0.47 using > Oracle Jvm 1.8.0.151 on Linux (RHEL 7). The Tomcat process is consuming cpu > at a constant high level even though there is a low amount of incoming > traffic. When

RE: Ajp Nio-thread stuck in loop and consuming a lot of cpu

Hi André, Thanks for your reply! The Tomcat Connector connection_pool_timeout is specified in seconds and the Tomcat ajp connector connectionTimeout is specified in milliseconds so both sides have the same value. This is the recommended setting. See quote from the link that your provided:

Re: Ajp Nio-thread stuck in loop and consuming a lot of cpu

On 12.01.2018 07:58, Toom Andreas wrote: Hi, We are having an issue with an application running Apache Tomcat 8.0.47 using Oracle Jvm 1.8.0.151 on Linux (RHEL 7). The Tomcat process is consuming cpu at a constant high level even though there is a low amount of incoming traffic. When