topic Re: Performance comparisions between Linux and HPUX11i in Operating System - Linux

Performance comparisions between Linux and HPUX11i

Srimalik — Tue, 28 Nov 2006 09:16:26 GMT

We are planing to migrate an application from HPUX to Linux. I have few queries regarding this
-Will there be any performance difference between an Itanium Server (HP Integrity Superdome Server with new sx2000 chipset with 64CPUs) running Linux and the same server running HPUX11i.
-Will a 64 way server having Itanium processors running Linux perform better than a PARISC server with same number of CPUs running HPUX.
-Can Linux run on a 64 way PARISC machine as efficiently as HPUX11i?

Can anybody please answer or point me to a source for the answers.
Regards
Srikrishan

Re: Performance comparisions between Linux and HPUX11i

Alpha977 — Tue, 28 Nov 2006 09:49:05 GMT

Hello!

i have this (difference by OS), the admin difference.

http://213.92.21.88/meo/white/unix/uxadm.htm

but nothing like hw performance.

Bye

Re: Performance comparisions between Linux and HPUX11i

Alpha977 — Tue, 28 Nov 2006 09:51:15 GMT

I found an old link into my Favorite:

http://www.parisc-linux.org/

Bye!

Re: Performance comparisions between Linux and HPUX11i

Steven E. Protter — Tue, 28 Nov 2006 10:03:01 GMT

Shalom,

Linux won't run on PARISC at all. It only runs on Itanium servers.

Being certified in both OS's the issue is not necessarily perfomrance but rather reliability.

I've found a lot of non-production code in Linux that never makes it into production HP-UX releases.

The 64 way Linux system will probably outperform the PA-RISC system on HP-UX because HP is in the process of phasing out PA-RISC over the next 8 or 9 years and new chip releases are either on the market or the last release is soon to be there.

SEP

Re: Performance comparisions between Linux and HPUX11i

George Liu_4 — Tue, 28 Nov 2006 14:05:16 GMT

You may expect the performance difference is small.
From perfomance/cost perspective, AMD operaton is more perferred than Itanuim.

Re: Performance comparisions between Linux and HPUX11i

rick jones — Wed, 29 Nov 2006 12:30:39 GMT

You also asked this in netnews yes?

Anyway, there is PA-RISC linux - www.parisc-linux.org - but I don't know that it runs on the big PA-RISC 'Domes. Also, while HP provides assistance to the effort, parisc-linux is not an officially supported thing.

As for the rest, the answer remains as it was in netnews - have your sales rep schedule some time in one of the solutions centers and make the direct comparison with your applications and the OS revs of your choice.

Re: Performance comparisions between Linux and HPUX11i

Geetha_1 — Wed, 29 Nov 2006 14:56:27 GMT

The Itanium based servers will probably perform better than PA-RISC based servers.

Here is whitepaper that may help...it doesn't compare OSes on the same hardware but gives some compiler performances on different hardware.

http://h20341.www2.hp.com/integrity/downloads/Aug%2031%2006%20Cambridge_Itanium_Whitepaper_Final.pdf

Geetha.

Re: Performance comparisions between Linux and HPUX11i

Florian Heigl (new acc) — Fri, 01 Dec 2006 12:20:46 GMT

I think someone should note there still *are* scalability issues with Linux for massively SMP systems, massively meaning anything from above 16 to 512 CPUs.

SGI has done a great deal of work on this, but in form of proprietary patches that are not soon to be in the upstream kernels.
I think right now noone can tell how long it will take until linux scales as well as one is used to it on smaller systems.

Note: if You're running Your Superdome as multiple Npars of like 8-16 CPU's, this should be a non-issue.

As already said, the overall performance will be nice, the current IA64 breed comes with a _LOT_ more cache, clockspeed and a n times faster system bus than what we get for PA-RISC; also many people have been working to optimize Linux for IA64.

Stay away from Linux on PA-RISC, only debian managed a reliable and working distribution, but the performance is 'suboptimal', also most current systems are far from being supported.
Some might remember HP's Linux-on-PA-RISC efforts in the end-90s, those have vanished silently. :)

[ Personally I'd advise anyone to keep running HP-UX on SuperDome missionb critical tasks and i.e. change to TCOE if license cost is an issue. And vice versa, use high-workpower Opteron 8-16x systems on Linux for not-so-critical applications with faster provisioning times. After all, that's where all the lifecycle babble makes sense ]

Re: Performance comparisions between Linux and HPUX11i

Srimalik — Wed, 13 Jun 2007 23:24:29 GMT

many Thanks for your replies.