On 19/06/07, matthew sporleder <msporleder@gmail.com> wrote:
> On 6/19/07, Chris <humptymoo@gmail.com> wrote:
> > On 19/06/07, Chris <humptymoo@gmail.com> wrote:
> > > Hi,
> > >
> > > I'm trying to run a Java application, but it fails with an out of
> > > memory exception. On a Linux box, I
> > > can see that it's using almost 1Gb of memory:
> > >
> > >                                    VIRT   RES    SHR
> > > 27726 root      25   0 1021m 558m  14m S    0 22.0  96:02.11 java
> > >
> > > I've tried to increase the various limits on my NetBSD box using
> > > /etc/login.conf, but it appears
> > > that the hard limits compiled into the GENERIC kernel (it's netbsd-4
> > > from a recent daily build),
> > > are too low. Reading options(4) I see that I can set various options
> > > such as MAXDSIZ and
> > > build a custom kernel. I was wondering what options I would need to
> > > set, and what to set the
> > > to, in order to ensure that a process like the one shown above would
> > > run on my NetBSD box.
> > >
> >
> > OK, after a bit of experimentation I've now got things running, so
> > just in case anyone's interested here's what I had to do. Recompile
> > the kernel, with the only change from GENERIC being an options MAXDSIZ
> > line:
> >
> > options MAXDSIZ="2147483648U"
> >
> > Then once that was built and in place I added the following to ~/.profile:
> >
> > export CATALINA_OPTS="-Xms128m -Xmx1024m"
> >
> > ulimit -s 8192
> > ulimit -d 2040288
> > ulimit -l 2040288
> >
> > Following a reboot I'm able to start the webapp, and after a little
> > light testing it seems to run fine!
>
>
> Were you getting Java OutOfMemory errors or netbsd out of memory errors?
>

Hi Matthew,

I was getting Java exceptions, so I started to up things with the
JAVA_OPTS environment variable and ulimit. Then I ran into the
per-process limits before the webapp had stopped slurping up memory.
The thing has finally leveled out at about 950 MB on my tweaked
kernel.

Regards,

Chris
-- 
We are all worms, but I do believe that I am a glow-worm.
Sir Winston Churchill