[Zope] Re: (Solaris) Threading, dtml and performance?!

Chris McDonough chrism@zope.com
Fri, 26 Oct 2001 08:28:37 -0400

It'd be pretty interesting if Anthony Baxter was able to run your tests. 
  I know he's got a serious set of Solaris machines.  Alas, I'm not sure 
what to do either...it would seem that we need a Solaris threading expert.

Oliver Erlewein wrote:
> Well I've tested your script with an old backup of Zope 2.3.2 on an Win NT
> SP 5 machiene. There are no problems. The script runs in one window and in the
> other I can surf the management screen. My Solaris can't do that.
> On Solaris and on NT I could see your second problem. When I press cancel on
> the Browser the process/thread doesn't stop. Thats really a problem. I
> started your script twice and the machiene (NT) is nearly not usable anymore. But
> thats better than Solaris - there I can't start the process twice!
> For me I've prooven that there is something VERY WEIRD with the Solaris
> Zope. OK it might not be Zope but Python. As for me I need an answer / solution
> desperately! Any ideas anybody? My primary guess is, that Solaris doesn't
> relese the threads after using them. I've tried a threaded Python script on my
> Solaris machiene and that had no problems. But I must confess I have no clue on
> how Zope Threading works. Therefore my test doesn't proove anything really.
> By the way...it also shows how fast Zope really is because if I run
> "singlethreaded" and Zope can still serve a few thousand requests a day thats really
> not bad.
> Oliver Erlewein

Chris McDonough                    Zope Corporation
http://www.zope.org             http://www.zope.com
"Killing hundreds of birds with thousands of stones"