Yesterday I decided to remove all of the Keywords tags from all of my movies. I used MCUtils to do this all at once. It modified something like 200 movies. MC then wanted to updated the tags in the XML and/or M4V files and started doing that.
At some point, my computer started running very sluggishly and MC hung. In Activity Monitor, I saw that Kernel Task was now consuming 4.5 GB of RAM starving the rest of the system pretty badly. JRWorker was hung. (Not Responding). After a while, I killed JRWorker. Kernel task went back to normal and the system worked correctly again.
Being a glutton for punishment, I decided to run "update tags from Library" on all of the movie files to make sure the tags were written. The same thing happened again, but I waited longer. It eventually finished and everything was normal again. Seems like a CRAZY amount of memory to use, even if it loaded 200 or more XML files at once. Maybe it was loading multiple large Video files at once?
Today, I was doing some maintenance with Series on my movies. I was working on only 2 movies and it wasn't working correctly. (I started a new thread about the problem I saw in the Windows MC22 forum.) So I quit MC22 hoping that quitting would make it act normally. On Quit, the system did the same thing as above: JRWorker hung, Kernel Task consuming memory, MC22 hung. After a while I killed JRWorker. It came back and consumed huge memory again. After a very short time I killed it and MC22.
When I re-opened MC22 everything was normal, other than the sorting issue which I've reported elsewhere. I did update tags from Library, on those 2 movies, and it finished very quickly with an "OK" dialog box.
I'm not sure what to make of this, but it's not something I've seen before with previous versions.
Brian.
Author
Topic: JRWorker Not Responding and large memory usage (Read 3000 times)