On Fri, Jun 06, 2003 at 05:32:19PM +0200, Gwendolyn van der Linden wrote:
> > Has anyone ever heard why the JVMs out there always lose to their
> > Windows counterparts in performance figures? The latest study at
> > this site shows all the Linux JVMs failing the number of
> > concurrent connections test miserably, except for the Blackdown
> > 1.3.1 JVM which otherwise sucks in terms of performance.
>
> I haven't heard, but I guess that Windows JVMs take advantage of
> Windows native threads and the efficient use of CriticalSection (which
> is quite fast), while most Linux JVMs use multiple processes. Just do
> a 'ps aux' after you started some big app like Borland Enterpise
> Server... Linux is supposed to have much better threading in 2.6, and
> hopefully app's will start taking advantage of that.
>
> Gwendolyn.
Actually, those are native threads, unless you have an old JVM.
Linux lists all threads in the output of ps aux. The only way I
know to tell when they are actually threads in the same process
is that a lot of the stats reported (memory size, resident
memory, etc.) are identical. I haven't looked carefully at the
ps man page in a while, though.
- richard
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Richard Kilgore
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