topic Poor performance importing data in Alfresco Archive

Poor performance importing data

sbenedetti — Mon, 03 Mar 2014 14:13:03 GMT

I'm using Alfresco Community 4.2d and I'm trying to import files from a network share.I'm importing for example 3 or 4 GB of data and during import CPUs reach 100% and Alfresco become unresponsive.CPUs go high and stay 100% for a lot of time (from half to an hour) and then they come back to a normal

Re: Poor performance importing data

mrogers — Mon, 03 Mar 2014 16:55:00 GMT

Your VM probably does not have enough RAM.

Content ingestion is always a heavy operation but half an hour does not seem right. I suspect your JVM is doing something sub-optimal like swapping memory. You need to do a little profiling to see where the bottleneck is.

Also remember to gather stats on your database after doing a big ingestion.

Re: Poor performance importing data

sbenedetti — Mon, 03 Mar 2014 16:57:32 GMT

Virtual machine has 4gb of ram.

Or are you talking about JVM configuration?

Thank you

Re: Poor performance importing data

mrogers — Mon, 03 Mar 2014 17:00:31 GMT

The JVM needs to fit without paging into your VM.

Re: Poor performance importing data

sbenedetti — Mon, 03 Mar 2014 17:02:41 GMT

How can I see running JVM values?
And how can I set them?

Re: Poor performance importing data

mrogers — Mon, 03 Mar 2014 17:13:32 GMT

jmx. Use something like jconsole. Or a profiling tool.

Re: Poor performance importing data

sbenedetti — Mon, 03 Mar 2014 17:21:41 GMT

Ok I take a look at JConsole

And to set values instead? Which configuration file or script I have to edit?

Thank you very much for your support!

Re: Poor performance importing data

sbenedetti — Wed, 05 Mar 2014 09:34:37 GMT

I've seen this during tracing:

java process shows a futex_wait_queue_me

What is it?