Odd one - Any performance inprovement by using mod_pagespeed?
I have been noticing some performance lags lately and noticed my browser does not always download the most correct CS/JS files. I was thinking about installing mod_pagespeed to trigger the browser to get those modifications. But I was curious as to whether anyone else has tried mod_pagespeed and whether it provided any performance improvements in OTRS. I have a feeling the answer will be to add more memory/cpu, but every millisecond counts. I was surprised to not find any information about the combo on a Google search. Marty
*ducking* because I'm not able to provide any experienced answer...
However, because of what it does, it's going to do it with what is served.
(OTRS does caching/compressing of its javascript, et al) and my impression
(without knowing much more than what's on the box) is that mod_pagespeed is
going to rework *that* ... better. (maybe. compression might not be
useful, per the faq).
The FAQ https://developers.google.com/speed/pagespeed/module/faq seems to
indicate ?ModPagespeed=off can toggle when it's running.
And, as per most of the times I stick my neck out and give an opinion,
perhaps the only one who can determine that, for your environment, is you.
Which isn't so bad. Maybe you could tell us your experience and be the one
on the Internet to reference.
:)
On Tue, Jun 24, 2014 at 5:30 PM, Marty Hillman
I have been noticing some performance lags lately and noticed my browser does not always download the most correct CS/JS files. I was thinking about installing mod_pagespeed to trigger the browser to get those modifications. But I was curious as to whether anyone else has tried mod_pagespeed and whether it provided any performance improvements in OTRS. I have a feeling the answer will be to add more memory/cpu, but every millisecond counts. I was surprised to not find any information about the combo on a Google search.
Marty
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I should have benchmarked it before and after, but it seems faster after clearing the OTRS cache (upgraded to 3.3.8) and installed FastCGI. Of course this is not scientific at all because, again, I did not do any benchmarks.
One thing to note. When I use the F12 developer tools, the pages are telling the browser to not cache previous pages. This will impact performance, but from a functional standpoint it is the right thing to do.
My recommendation is for users to run the Support Assessment module on the admin page and see what tweaks can be done. It does a really decent job at reporting on your system and telling you where improvements might be made. For example, it checked the following on my web server.
* Check if the system uses Apache::DBI.
Apache::DBI
* OK Check if the system uses mod_deflate.
mod_deflate is enabled.
* OK Check if the system uses mod_headers.
mod_headers is enabled.
* OK Check if the system uses Apache::Reload/Apache2::Reload.
Apache2::Reload
* OK Display web server version.
You are running Apache/2.4.7 (Ubuntu).
* OK Check for CGI Accelerator.
mod_perl/2.0.8
From: Gerald Young [mailto:crythias@gmail.com]
Sent: Tuesday, June 24, 2014 4:49 PM
To: User questions and discussions about OTRS.
Subject: Re: [otrs] Odd one - Any performance inprovement by using mod_pagespeed?
*ducking* because I'm not able to provide any experienced answer...
However, because of what it does, it's going to do it with what is served. (OTRS does caching/compressing of its javascript, et al) and my impression (without knowing much more than what's on the box) is that mod_pagespeed is going to rework *that* ... better. (maybe. compression might not be useful, per the faq).
The FAQhttps://developers.google.com/speed/pagespeed/module/faq seems to indicate ?ModPagespeed=off can toggle when it's running.
And, as per most of the times I stick my neck out and give an opinion, perhaps the only one who can determine that, for your environment, is you. Which isn't so bad. Maybe you could tell us your experience and be the one on the Internet to reference.
:)
On Tue, Jun 24, 2014 at 5:30 PM, Marty Hillman
participants (2)
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Gerald Young -
Marty Hillman