Re: 3TiB-Node: Installation fails with Java out of memory error

> Gesendet: Mittwoch, 16. April 2014 um 04:10 Uhr
> Von: "Dennis New" <[email protected]>
> An: [email protected]
> Cc: "Wolfram Goetz" <[email protected]>
> Betreff: Re: [freenet-support] 3TiB-Node: Installation fails with Java out of memory error
>
> On Mon, 14 Apr 2014 21:05:31 +0200, Wolfram Goetz wrote:
> > Hello everyone,
> > 
> > I had successfully run a 400GiB-Node in a Windows 7 x64 environment,
> > running as a virtual machine in VirtualBox with 6GB RAM. Now I moved
> > the whole installation to a larger harddisk and tried to increase the
> > datastore size to 3TiB. This results in a java out of memory error.
> > This is from my wrapper.log:
> > 
> > INFO   | jvm 1    | 2014/04/14 17:08:17 | Initializing SSK Datastore
> > (46033289 keys)
> > INFO   | jvm 1    | 2014/04/14 17:08:17 | WrapperManager Error: Error
> > in WrapperListener.start callback.  java.lang.OutOfMemoryError: Java
> > heap space STATUS | wrapper  | 2014/04/14 17:08:17 | Filter trigger
> > matched. Restarting JVM.
> > INFO   | jvm 1    | 2014/04/14 17:08:17 | WrapperManager Error:
> > java.lang.OutOfMemoryError: Java heap space
> > STATUS | wrapper  | 2014/04/14 17:08:17 | Filter trigger matched.
> > Restarting JVM.
> > 
> > After a few more error messages freenet shuts down completely. Same
> > problem with a new & clean install of freenet. 
> > 
> > Memory settings from my wrapper conf:
> > 
> > wrapper.java.initmemory=256
> > wrapper.java.additional.4=-XX:MaxPermSize=256m
> > wrapper.java.maxmemory=1024
> > 
> > Did not work with the original settings, too. Any idea what I could
> > do?
> 
> Perhaps try increasing your MaxPermSize, to something like 500M or so?
> And check (in fproxy's Statistics page) that you aren't reaching your
> 1gig maxmemory, which should probably be enough?

Thanks for the answer. Played around with the settings on a fresh freenet install, but I do not really know what I'm doing... This seems to work more or less:

wrapper.java.initmemory=60 (default)
wrapper.java.additional.4=256
wrapper.java.maxmemory=1536

On the stats page, 1,45 GiB are allocated for Java and 1,30 GiB are in use.
I left alone the MaxPermSize setting, which seems to point to another variable:

MaxPermSize=wrapper.app.parameter.1=freenet.ini

Still testing, had some additional stability problems because VirtualBox seems to have problems (BSODs with hardware virtualization and two CPUs in den VM). I successfully started a copy of the original 400GiB node and set the datastore size to 3000GiB. But after half an hour it still says "Datastore(CHK-cache) resize in progress: 0/6137772". Hmmm. I'll check back later.


 
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