Re: Significant response time delays between 8.0 and 8.1

On Tue, Dec 19, 2023 at 7:11 AM Steve Parry <[email protected]> wrote:

> Hi Everyone.
>
>
>
> I’m a hobby programmer, so please be kind😊
>
>
>
> I’m investigating a performance degradation that I have between PHP8.0 and
> PHP8.1. I see a couple of similar issues being raised but no resolutions
> that I’ve found.
>
>
>
> In my live WordPress system I have HTML/Java scripts that make multiple
> ajax calls to PHP scripts on the remote hosted web server. On upgrading to
> 8.1 the number of ajax calls failing with timeout increased dramatically by
> a factor of between 4 to 8 depending on the frequency of calls at any one
> time.
>
>
>

Are your OS libraries uptodate?


> Examination of a comparison showed scripts were taking up to 15 seconds
> under PHP8.1 compared to 1-2 seconds on PHP8.0.
>
>
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> To isolate the issue I created a simple (non-WordPress) web script that on
> the click of an icon uses ajax to send a retrieve request to a server
> script. The server test script simply immediately returns one piece of
> hardcoded dummy jSON data with no processing.
>
>
Can you please share the code?


>
>
> Based on the Chrome debugger Network tab, the time of the network calls
> triggered from the test script under PHP8.0 are a response of around 25mS.
> Under 8.1 the timings are average 92mS. A factor of about 3.7 slower under
> 8.1. This has been consistent on two separate servers.
>
>
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> My conclusion at this point is that my test setup is reflecting the same
> (or worse) time delay factor between PHP8.1 and PHP8.0  as I am having on
> the full site. As my test setup is pure HTML/Javascript and PHP on the
> server I think this might be an issue with PHP8.1.
>
>
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> Any advice or assistance is keenly welcomed! Thank you in advance.
>
>
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> Happy to share my scripts and the URL to the test script.
>
>
>
> Cheers
>
> …Steve
>



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