dlietz Absent Member.
Absent Member.
1579 views

High CPU Utilization

Running GW2014 sp1 webaccess on a vm by itself, after a few days of boot java goes to $199% CPU and while it doesn't seem slow from a user point of view if I leave it that way long enough webaccess will go unresponsive. Restarting tomcat will resolve it for a couple days.

top - 10:06:13 up 12 days, 19:12, 2 users, load average: 6.00, 6.01, 6.05
Tasks: 116 total, 1 running, 115 sleeping, 0 stopped, 0 zombie
Cpu(s):100.0%us, 0.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 3926016k total, 1401044k used, 2524972k free, 160164k buffers
Swap: 2096124k total, 0k used, 2096124k free, 776108k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
18432 tomcat 20 0 736m 274m 8392 S 199 7.1 16398:03 java
1 root 20 0 10548 820 684 S 0 0.0 0:05.94 init
2 root 20 0 0 0 0 S 0 0.0 0:00.08 kthreadd
3 root 20 0 0 0 0 S 0 0.0 0:00.55 ksoftirqd/0
5 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/u:0
6 root RT 0 0 0 0 S 0 0.0 0:00.03 migration/0
7 root RT 0 0 0 0 S 0 0.0 0:02.04 watchdog/0
8 root RT 0 0 0 0 S 0 0.0 0:00.02 migration/1
10 root 20 0 0 0 0 S 0 0.0 0:00.80 ksoftirqd/1
12 root RT 0 0 0 0 S 0 0.0 0:01.49 watchdog/1
13 root 0 -20 0 0 0 S 0 0.0 0:00.00 cpuset
14 root 0 -20 0 0 0 S 0 0.0 0:00.00 khelper
15 root 0 -20 0 0 0 S 0 0.0 0:00.00 netns
16 root 20 0 0 0 0 S 0 0.0 0:01.00 sync_supers
17 root 20 0 0 0 0 S 0 0.0 0:00.02 bdi-default
18 root 0 -20 0 0 0 S 0 0.0 0:00.00 kintegrityd
19 root 0 -20 0 0 0 S 0 0.0 0:00.00 kblockd


VM is configured with 2 cpu's and 4 GB ram.

I have not reserved any memory for the vm.

Any input is appreciated.

Dan
Labels (1)
0 Likes
2 Replies
John_Gill
New Member.

Re: High CPU Utilization

Hi,

I have on average 200 users on my Webaccess VM and I have a similar problem in that Tomcat6 become non-responsive.
I allocated 6G of RAM to the VM and then in /etc/sysconfig I edited the file "tomcat6" and inserted a line
"CATALINA_OPTS="-Xms4096M - Xmx4096M" Then restart of Tomcat6 with "rctomcat6 restart"
This will allocate 4G of ram to Java heap size and the performance will be better.

Having done all of the above, I still find that I need to restart Tomcat6 every week ......

Give it a try.
Regards
John
0 Likes
buckesfeld Absent Member.
Absent Member.

Re: High CPU Utilization

There are known issues with memory leaks in WebAccess. You should open an SR.

Uwe

--
Novell Knowledge Associate
Please don't send me support related e-mail unless I ask you to do so.
0 Likes
The opinions expressed above are the personal opinions of the authors, not of Micro Focus. By using this site, you accept the Terms of Use and Rules of Participation. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. As of September 1, 2017, the Material is now offered by Micro Focus, a separately owned and operated company. Any reference to the HP and Hewlett Packard Enterprise/HPE marks is historical in nature, and the HP and Hewlett Packard Enterprise/HPE marks are the property of their respective owners.