I'll be sure to post an update if u16 resolves it. Or any other progress
for that matter.

In the meantime don't be shy either :)

On Wed, 2010-02-24 at 14:52 +0100, Carl wrote:
> Taylan,
> 
> > The failures we've seen are in anywhere between 8 hours to a week of
> > runtime.
> 
> The timing of the failures seems similar.
> 
> > We have also had failures with hotspot error files (hs_err) present, and
> > the cause specified was indeed SIGSEGV indicating a page fault.
> 
> I have never seen any hs_* files but have seen core files where strace 
> showed the jvm stopped on a seg fault.
> 
> > We also use jdk 1.6.0_18, I'm downgrading the machines to 1.6.0_16 when
> > the situation allows (during regular updates of the application, or a
> > crash) to see if that helps.
> 
> I have used jdk 1.6.0_17 and 1.6.0_18 with the same results... have not 
> tried 1.6.0_16.  Please post your results of this trial.
> 
> > Running tomcat on the
> > foreground might show something, but then again I could be waiting for a
> > month for it to happen.
> 
> Yes, this has been part of my problem as anytime we change something, we 
> have to wait a week for the server to fail.
> 
> In one sense, I am fortunate that I have a little more flexibility than you. 
> I have two servers (different hardware) but only need one in service at a 
> time.  Therefore, I always have one server I can test ideas on although I 
> have never been able to develop a meaningful stress test, i.e., the only way 
> I can test a change is to put it in production.
> 
> Thanks,
> 
> Carl



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