05-25-2011 04:55 AM
Is there a way to diagnose socket I\O problems on HP-UX or maybe there is some possible limitations that can be configured? Maybe there is necessary JVM option? Any feedback from your side would be highly appreciated.
We’ve tried to optimize JVM options according to http://publib.boulder.ibm.com/infocenter/wasinfo/v
Java HotSpot(TM) 64-Bit Server VM (19.1-b02-jinteg:2011mar11-16:46 PA2.0W (aCC_AP), mixed mode)
Java: version 188.8.131.52, vendor "Hewlett-Packard Company"
We use following instance:
OS: HP-UX (B.11.23)
Architecture: PA_RISC2.0W 64bit
Total physical memory size: 4 088 MB
Swap size: 4 090 MB
05-25-2011 05:21 AM
There's just no way even the fastest PARISC system can beat X86 OS based Java period.
Let me guess -- your PARISC is likely a PA8800 or PA8900 system right? So something likely ~ 1.0 Ghz?
I know performance is not all about clock speed -- but c'mon -- PARISC are just old chips. Even earlier Pentiums and Xeons with HT (hyperthreading featurettes) are significantly faster than PARISC in certain compute workloads.
05-25-2011 05:25 AM
But I'm sure this must have been addressed in the IBM link that you mentioned (haven't read it to be honest).
05-25-2011 05:33 AM
Thank you for your reply. Yes, we are working in server mode. JVM switch it on automatically on HP-UX.
05-25-2011 05:38 AM
Thank you for your reply. I am pretty sure that we use old server. I will try to get it.
But unfortunately we cannot change it(
05-25-2011 05:57 AM
What kind of PC/X86 environment were you comparing against?
I deal with this performance debacles/differences all the time. No amount of tuning on the old aging UNIX system (whose CPUs are a generation older than current) can beat even yesterday's X86 speedsters. Even today's current UNIX systems can still be beaten by today's X86 systems in head to head battle.
So you should really compare against a similarly configured system.
05-25-2011 07:57 PM