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Moderators: martimiz, Sean, biapar, Willr, Ingo, swaiba, simon_w

Anyone using APC PHP Accelerator?


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8 Posts   3051 Views

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Blackdog

26 April 2011 at 10:36pm Community Member, 156 Posts

Hi All,

Just wanted to see if anyone is using APC on a live site and if it has any adverse effects on Silverstripe?

With other people reporting errors with xcache and SS email headers I thought it might be safer to ask first.

thanks.

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swaiba

27 April 2011 at 7:40am (Last edited: 27 April 2011 7:41am), Forum Moderator, 1796 Posts

APC is so good it's going to be included in PHP6 (so I've heard) and it was recommend as the best one, also turn on mod_deflate too. Should mention it's been running on my server for months - nothing negative to report.

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Blackdog

27 April 2011 at 3:09pm Community Member, 156 Posts

I have been using mod_deflate and htacces file caching rules which have helped overall site speed.

My concern has shifted lately with a site we host which is attracting upward of 3000 visits a day. This is putting a large amount of load on apache and I either need to look at putting them on their own vps or install something to help reduce the load.

Just to confirm, you are running APC on your server?

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swaiba

27 April 2011 at 8:00pm Forum Moderator, 1796 Posts

it's been running on my server for months - nothing negative to report

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Blackdog

28 April 2011 at 1:15am Community Member, 156 Posts

I wasn't sure if you were talking about mod_deflate.

I installed APC and there is definately a great gain to be made using it.

Thanks!

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tv

14 August 2011 at 1:23am Community Member, 44 Posts

What kind of requests per_second are you guys seeing with APC installed?

I have APC installed on my Media Temple 3.5 dv server (1 GB RAM) with shared memory set to 100M. I also have partial caching in place (which I have tested and is working) with SS_Cache::pick_back_end set to use APC.

Using ap bench with a concurrency of 10, I am only seeing 6 to 7 requests pre second. I am new to server optimization, but isn't this really low?

Any thoughts on what I might be doing wrong or what I can do to increase my requests_per_second?

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Sean

5 September 2011 at 11:37am Forum Moderator, 921 Posts

If you're in dev mode on the site, you can add ?debug_profile=1 to the URL, e.g. "mysite.com/about-us?debug_profile=1".

This will give you a list of times it took to render page components. While it's not the best profiler around, it does give you a good indication what parts of the page template are slow, and from there you can apply [url=http://doc.silverstripe.org/sapphire/en/reference/partial-caching]partial caching[/url] where appropriate.

Hope that helps.

Sean

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biapar

21 February 2012 at 12:43am Forum Moderator, 435 Posts

I use phpcache on IIS7.5