Re: [eclipselink-users] Speed problems with 1.1.3

[James Sutherland <jamesssss@xxxxxxxxx>]

Would it be possible to try the 1.2 release, and see if the same issue
exists?

Could you also try something that is only reads, and see if it has the same
issue.


KARASZI Istvan wrote:
> 
> hi!
> 
> On Nov 3, 2009, at 8:40 PM, James Sutherland wrote:
>> I compared the source code between the two releases, and could not see
>> anything that changed that could cause this.
> that sad, because something between 1.1.2 and 1.1.3 caused this, I'm  
> sure.
> 
>> Can you identify what is 20x slower, i.e. reading, inserts, updates,
>> deletes.  Or narrow down what exactly is slower.
> we've tried. I ran multiple tests including a profiler (visualvm), but  
> the calls look the same only slower, so there was no methods which was  
> waiting too much or using to much CPU.
> 
> I'll try to get a proper profiling data from the machine soon.
> 
> in the part we are testing the slowness there are almost(!) only  
> inserts, a lot of inserts (about 90k). I'm not saying that the inserts  
> are slow only, but in that part it seems like.
> 
>> Are you using the same JDK on both machines?  Are you weaving the  
>> same on
>> both machines?  Check that weaving is functioning on the slow machine.
> first it was different, but later I changed everything to the same. so  
> it's not depending on the JDK.
> 
> but to make it sure, we put back the eclipselink 1.1.3 to the fast  
> machine it slowed down tha fast machine too. so the only difference is  
> the eclipselink. that's why I sent this mail to the list previously.
> 
>> A specific test/use case, or profile would be useful.
> 
> yes it would be nice, but the app is too complicated. I can give you  
> an account to test if if you feel like. it's absolutely reproducible.
> 
> I'll try to create a testcase but it will tak a while.
> 
> thanks,
> -- 
> KARASZI Istvan
> 
> 


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