> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Kirk Wolf
> Chase, John wrote:
> > X-Posted to MVS-OE list.
> >> -----Original Message-----
> >> From: IBM Mainframe Discussion List On Behalf Of Tom Grieve
> >>
> >> This looks like a downstack size problem. The JVM is built using
> >> XPLink; if the downstack size is too small, almost every new
function
> >> will program check when it tries to save registers on entry. LE
then
> >> has to handle the
> >> 0C4 and extend the stack. Try -
> >>
> >> STACK(128K,128K,ANY,KEEP,128K,128K)
> >>
> >
> > You might be on to something.... Startup time for the application
was
> > REDUCED by two minutes (from 5.5 min to 3.5). I've asked the
> > application tester to try the benchmarking job again; will post the
> > results when I get them.
>
> Curious. The "java" launcher for SDK 1.4.2 (old SR2) sets this to:
>
> STACK(16384,4096,ANYWHERE,FREE,65536,16384)
>
> Could it be that they got it wrong?
> Maybe the combination of running an old version of the SDK
> with newer z/OS and LE has caused a mismatch?
We're still on an "old" release of z/OS and LE: v1r5. Scheduled to go
to 1.7 in 1Q07.
> It might be interesting to see an LE options/storage report
> of running your job without overriding the stack setting.
> You would expect to see a ton of segment allocations/frees to
> the XPLINK stack.
>
> export _CEE_RUNOPTS="RPTSTG(ON),RPTOPTS(ON)"
Already tried that. The application has a "bug" in that it ignores its
own shutdown command. Only way to stop it is to cancel the A/S, and
that prevents LE from issuing the reports.
I'll take a console dump and "go diving" for a while....
BTW, results of the "benchmarking" job: The run time INCREASED by two
minutes (nine minutes to complete vs. seven with all the defaults in
place).
-jc-
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