[TriLUG] Web Site access testing

[via TriLUG]

I'd echo the point about grabbing a har file and looking at timings.

You may also want to look at the developer console, not just the har 
file. It could show there is some javascript bug which resulting in the 
page hanging until timeout.

It would also be useful to take a pcap and see what kinds of timings 
you're getting at the network level to various infrastructure you may be 
reaching out to when navigating to the site. A pcap could show DNS 
timeouts leading to querying other available DNS servers, CDN slowness 
if maybe the site is pointing your browser to content on a server on 
another physical site with a slow link, and myriad other issues you 
could be hitting.

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On 2021-08-17 14:28, Brian McCullough via TriLUG wrote:
> A question for "the oracle."
> 
> 
> I have been doing various searches and not coming up with the answers
> that I really need.
> 
> I have a web site that I am working on, and in one "location" it
> responds almost instantaneously while in a different one, a page load
> takes about 30 seconds.
> 
> These are supposedly identical RHEL 8 machines, just in different parts
> of the network.
> 
> I have limited access to the machine internals in the case of the slow
> machine ( just a "user" ), can't even read more than the PHP error log.
> 
> The tools that I have been finding have been of two classes, the ones
> that test "performance" of the Apache server itself, load testing and
> such.  The other ones are designed for the network administration
> people, looking for open ports and various other network faults.  If I
> had access to the network internals, they might be of some help.
> 
> I expect that I am not asking the correct question, which is normal.
> What might be the right question, if there is one?
> 
> I can't even ping from the fast machine to the slow one, even though I
> can SSH by IP address.
> 
> 
> 
> Thank you all,
> Brian