Will Spies wrote:
>
> We are evaluating both the HP (HP UX 11.x) and Sun (Solaris 2.6) platforms for use
>with the WebLogic Application Server 4.5.1.
>
> Can anyone give me some info on why one platform may be better than the other for
>WebLogic?
>
> Thanks,
>
> Will
>
> P.S. My choice is Sun as they support Java 2 and 4.5.1. HP is not as yet certified
>by BEA. However I'm looking for more differences.
I found conflicting resources on BEA's website about whether JDK 1.2 is
supported on HP-UX 11.0. The last thing I found says that 1.2.2.03 is
supported. It was non-specific about whether it was the HotSpot VM or
the Classic VM that is supported (HP ships both with 1.2.2.03; use
-classic to switch to the Classic VM).
We are currently doing an extensive prototype with WLS 4.5.1, running on
both HP and Sun. We have found several things, which we are still trying
to work through:
1. HP's HotSpot VM is 2x slower (or worse) than its own Classic VM. (We
have a ticket open wiht HP on this one.) It seems to get worse the more
threads you add.
2. HP's Classic VM seems to lock up and core dump occasionally. We have
also seen a "stack trashed" error message, then a core dump. (We have a
ticket open on this as well.)
3. We get significantly better performance and stability on a
4-processor Sun E-450 than we get on a 6-processor HP K570.
Also, the Sun VM has a great feature not found in HP's VM. When you do a
<ctrl>-\ using the Sun VM, you get preseneted with a menu... and one of
the options allows you to detect deadlocks. I found a deadlock in
Oracle's 8.1.6 JDBC driver this way.
We are still working with HP, because that's our target platform. But we
are so frustrated that we are probably going to ask for engineering
support from HP to resolve our issues.
-eric
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