Re: Re: Strange slowdowns in PHP

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Hi Manuel,

El lun, 27-02-2006 a las 18:54 -0300, Manuel Lemos escribió:
> Hello,
> 
> on 02/27/2006 06:15 PM William Lovaton said the following:
> > Looking at the log I get the following information:
> > - Execution time: 29.3 secs
> > - Request started at: 11:08:06 AM
> > - Request ended at: 11:08:35 AM
> > - The functions that got executed were (time, class::method, duration):
> > 	- 11:08:06, GraficoMaterno::alturaUterina, 0.009499
> > 	- 11:08:06, GraficoAlturaUterina::session_start, 0.001259
> > 	- 11:08:06, GraficoAlturaUterina::session_write_close, 0.001613
> > 	- 11:08:06, GraficoAlturaUterina::sendImage, 0.029186
> > 
> > The last record in the profile (GraficoAlturaUterina::sendImage)
> > corresponds to the last couple of lines of code in the script which are:
> > 	imagepng($image);
> > 	imagedestroy($image);
> 
> If you are generating a large image, it may take some time to flush the
> output buffer to serve to the user browser.

The image is small.  And as you can see in the profile, that operation
took 0.02 secs, so it is very fast.  Unless those operations are being
executed in asynchronous mode (which I don't think they are) this might
be the responsible of the slowdown.

I have to note that this problem is happening on random pages which also
generates regular HTML, this is not something particular to images.  So
my guess would be that the problem is somewhere in the session code.

Thanks,

-William

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