[Pharo-project] Delay bug

Gary Chambers gazzaguru2 at btinternet.com
Wed Apr 6 18:30:34 CEST 2011


Bear with me, hopefully my fix will work (yay for all then, especially 
Seaside peeps!).

Regards, Gary

----- Original Message ----- 
From: "Stéphane Ducasse" <stephane.ducasse at inria.fr>
To: <Pharo-project at lists.gforge.inria.fr>
Sent: Wednesday, April 06, 2011 5:24 PM
Subject: Re: [Pharo-project] Delay bug


thanks gary.
Yes adrian got a problem on his server after two weeks of load. I do not 
know how we can improve them.

Stef

On Apr 6, 2011, at 6:02 PM, Gary Chambers wrote:

> Well, we have been having problems with applications appearing to hang 
> every 6 days or so (sound familiar?).
>
> I have identified a bug in the Delay implementation, rather obscure, but 
> highlighted by our applications that make HEAVY use of processes/(tight, a 
> few tens of milliseconds)delays/semaphores etc.
> Naturally due to an edge case on millisecond clock rollover...
>
> Affects all Squeak/Pharo versions, as far as I can tell. (It is separate 
> from the OSProcess issues I have posted about a few weeks ago).
>
> I've developed a potential fix, though I'll have to let you all know 
> whether (hopefully) successful in a week or two... fingers crossed!
>
> I hope it is fixable, last hurdle for business applications, from our 
> point of view.
>
> I'll post details when fix confirmed or failed then.
>
> Regards, Gary





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