topic Re: High cpu usage and extremely slow in Alfresco Archive

High cpu usage and extremely slow

vikhoho — Thu, 16 Jan 2014 14:26:06 GMT

HiI'm running alfresco community 4.2.e on a machine running Red Hat Enterprise Linux Server release 6.4.It's a default alfresco setup apart from openjdk 1.7 instead of the one in the installer.I am reading and writing documents form/to alfresco using apache chemistry OpenCMIS.Everything seems to be

Re: High cpu usage and extremely slow

eswbitto — Thu, 16 Jan 2014 17:51:11 GMT

Let's start with your hardware. Can you give details of what equipment you have Alfresco running on? You should have 4GB of RAM as a minimum. Does your HDD have a decent rpm? Raid Type? All that good stuff. CPU?

If you just have a vanilla install then I don't see how it would be using that much cpu at a time.

We have our install on a VM with 8GB of memory. The cpu never gets above 20-30% except on backups….So not sure where things are going for you.

Re: High cpu usage and extremely slow

vikhoho — Fri, 17 Jan 2014 09:37:59 GMT

It's a virtual machine running on ms hyper-v. Dual core xeon @ 2.3 ghz, 8gb ram. Not sure about hdd and raid specs though but it should be something decent.

Re: High cpu usage and extremely slow

vikhoho — Fri, 17 Jan 2014 15:09:42 GMT

I think I've found the troublemaker.
I have a script which is executed when a new image is uploaded which contains:
<javascript>
var rend = renditionService.createRenditionDefinition("cm:thumbnail", "imageRenderingEngine");

rend.parameters["resizeToThumbnail"] = true;
rend.parameters["xsize"] = 200;
rend.parameters["ysize"] = 200;
rend.parameters["maintainAspectRatio"] = true;

rend.execute(document);
</javascript>

This seem to kill the server, although it's running fine on my windows hosted alfresco.
Is there something wrong with my script?