[support] Improving performance

Mon Jan 6 12:59:22 UTC 2014

Wow,  Thanks Alison and all,
That's a lot of info.   Not sure how much translates over to windows.
I will take a look.

Phil

From:	Alison <penguin at alisoncc.com>
To:	support at drupal.org,
Date:	01/03/2014 09:58 PM
Subject:	Re: [support] Improving performance
Sent by:	support-bounces at drupal.org

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 at webserver ~] yum install  php-pear  php-devel  httpd-devel
pcre-devel  gcc  make
[root at webserver ~] pecl install apc
[root at 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 at 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 at earthlink.net>
>To:     support at drupal.org,
>Date:   01/03/2014 09:31 AM
>Subject:        Re: [support] Improving performance
>Sent by:        support-bounces at 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
>>
>
>--
>[ Drupal support list | http://lists.drupal.org/ ]
>
>
>--
>[ Drupal support list | http://lists.drupal.org/ ]

--
[ Drupal support list | http://lists.drupal.org/ ]