Hi Jamie, Phil,
thanks for the info Jamie, much appreciated. As to sharing Phil, happy to do so. A little bit about my setup.
I am retired and run a Centos 6.5, Apache, MySQL webserver in my lounge room. The server is home built - Gigabyte mobo, Intel processor, Kingston RAM, etc. I have a second similar server as a backup and development machine. I get 1.5Mb upload speed which is adequate to support half a dozen low traffic Drupal based sites. When I say low traffic, we are looking at 30-50 hits a day for each site
The sites tend to be more personal interest sites rather than commercial ie. personal Blogs etc. The hits tend to be clustered based on chronology and demographic. Typically might get 20-30 hits over a couple of hours on a site and then nothing for 20 hours. During the quiet period had problems with Drupal cache's timing out, so first hit was then incredibly slow.
I installed memcache via Drupal.org and memcache status using their instructions. This seemed to help, but still getting very slow first responses. I then did following:
[root@webserver ~] yum install php-pear php-devel httpd-devel pcre-devel gcc make [root@webserver ~] pecl install apc [root@webserver ~] service httpd restart
This being suggested by a google search. The pecl install seems to have included an initial setup as many questions were asked.
As I have massive amounts of RAM available, I increased all resources in /etc/php.d/apc.ini apc.shm_size = 128M apc.num_files = 4096 apc.user-entries = 4096 apc.ttl - 21600 apc.user_ttl - 21600 apc.gc_ttl = 14400 apc.max_file_size = 5M. Then did a [root@webserver ~] service httpd restart.
There is a really neat tool to see what's happening. Copy apc.php from docs directory to site root, and the run example.com/apc.php.
Now I need to wait a few days to see what happens.
Alison PS. Latest site just built is at http://www.trans-aspie.com
At 01:57 AM 04-01-14, you wrote:
Hi Alison, Please share what you find. I have been intending to look into this myself. I'm concerned about the initial page load time on my site. It seems pretty slow. Regards, Phil
From: Jamie Holly hovercrafter@earthlink.net To: support@drupal.org, Date: 01/03/2014 09:31 AM Subject: Re: [support] Improving performance Sent by: support-bounces@drupal.org
The high performance group on drupal.org is really good:
https://groups.drupal.org/high-performance
The most common recipe is APC for opcode caching, memcache for object caching and Drupal's database to cache the form table.
APC also offers object/user caching, but you do have to spend sometime getting it tuned right so the memory does fragment. In one high performance site I manage I use the same recipe as above, but I use APC to handle page caching.
Of course all this varies greatly by site. Some sites are mostly anonymous users, meaning page caching is the key, while others have a heavy logged-in user base, so object caching becomes the big factor.
Also depending on how the site is built, there's other cache modules out there that really help, like views cache, authcache and panels cache.
Jamie Holly http://hollyit.net
On 1/3/2014 5:08 AM, Alison wrote:
Hi Guys and Girls,
can anyone recommend a good general discussion site or place where I can
read about Drupal caching. Currently running Memcache and APC - the PHP accelerator, but not sure whether there would be anything to gain by implementing Drupals caching as well. Wouldn't mind finding some way of measuring the effects of the various performance enhancements. Are there any downsides to Memcache and APC?
Hugs
Alison
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