the relationship between metadata size and heap size

[Simon Lundström]

On Sun, 2015-09-13 at 17:39:20 +0000, Cantor, Scott wrote:
> On 9/12/15, 10:22 AM, "users on behalf of Tom Scavo" <users-bounces at shibboleth.net on behalf of trscavo at gmail.com> wrote:
> >
> >What makes this worse is that the InCommon metadata aggregate will
> >double in size overnight (literally) once we start importing eduGAIN
> >metadata. If I knew what to tell deployers to prepare for this event,
> >I would. Is there some JVM configuration that is known to work with
> >large aggregates of size 32MB and beyond?
> 
> […]I don't know why people are having problems (I'm not, with 2.4.x on Java 7/8) and I don't know why it's not logging a simple error if its out of memory, but people are on so many different versions at this point.

Tom, how often do you reload/refresh the metadata? When we refreshed the
metadata every 10 minutes we ran out of memory every month or so. Our
federation (SWAMID) metadata is 20MB atm.

This disappeared when we changed it to the default (4h).

BR,
- Simon

____________________________________

Simon Lundström
Section for Infrastructure

IT Services
Stockholm University
SE-106 91 Stockholm, Sweden

www.su.se/it