Re: [VuFind-General] JAVA_OPTIONS

[Wayne G. <ws...@wm...>]

Mark,

Thanks for this. I was trying not to explain young generation ;) I 
updated the section on garbage collection and added a section on user 
contributed settings. Mind posting yours there?

Also, are you using parallelgc or parnewgc?

Wayne

Mark Triggs wrote:
> Hi Wayne,
>
> The defaults have worked well for us so far.  The only extra thing we've
> done (besides increasing the heap size) was add:
>
>   -XX:NewRatio=5
>
> We found that, with a 6 gig JVM, about 2 gigs of that was going to the
> young generation.  Setting NewRatio as above pretty much halved that,
> giving the other gig back to the old generation pool.  For us, this led
> to a pretty drastic drop in server load, so I guess we were spending a
> fair bit of time doing full GCs (or maybe it was just that scavenging
> the young generation was taking longer.  Not sure)
>
> Cheers,
>
> Mark
>
>
> Wayne Graham <ws...@wm...> writes:
>
>   
>> I'm a little tardy, but I just wrote up a short-ish description on
>> setting the JAVA_OPTIONS variable for tuning the JVM for Solr in the
>> Performance section of the vufind wiki (http://vufind.org/wiki/performance).
>>
>> Has anyone needed/wanted to tune Jetty yet? Or are the defaults in there
>> working ok for folks?
>>     
>
>