[Building Sakai] high cpu with a Image Animator thread

[Zhen Qian]

Hi, all:

One of our prod server shows high CPU and we traced down to an Image
Animator thread. Here is one stack trace:

2014-09-01 17:51:02
Full thread dump Java HotSpot(TM) 64-Bit Server VM (24.65-b04 mixed mode):
...

"Image Animator 3" daemon prio=10 tid=0x00007fd728174000 nid=0x2328
runnable [0x00007fd6f9528000]
   java.lang.Thread.State: RUNNABLE
at sun.awt.image.GifImageDecoder.parseImage(Native Method)
at sun.awt.image.GifImageDecoder.readImage(GifImageDecoder.java:596)
at sun.awt.image.GifImageDecoder.produceImage(GifImageDecoder.java:212)
at sun.awt.image
.InputStreamImageSource.doFetch(InputStreamImageSource.java:269)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:205)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:169)

Meanwhile, there is no impact on database usage or end-user response time.

This problem has been originally reported by Rutgers in Sakai back in 2011.
It still occurs with our current system based on 2.9.2. Anyone else ever
seen this?

Thanks,
- Zhen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://collab.sakaiproject.org/pipermail/sakai-dev/attachments/20140904/51d18c34/attachment.html