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Site slow with eaccelerator enabled
| Posted by ridesign, 09-28-2009, 08:55 AM |
| I have enabled eaccelerator on my server but the site does not appear to load any quicker. It is a site running wordpress, with a 200mb mysql db, with hypercache running.
I am on a uk VPS server with 512 mb guaranteed ram burstable to 768mb.
I have done tests on pingdom, and .js and image files take a long time. 3-4 seconds each even the small ones 0.9kb
Server information:
Processor #1 Vendor: AuthenticAMD
Processor #1 Name: Dual Core AMD Opteron(tm) Processor 270
Processor #1 speed: 498.614 MHz
Processor #1 cache size: 1024 KB
Processor #2 Vendor: AuthenticAMD
Processor #2 Name: Dual Core AMD Opteron(tm) Processor 270
Processor #2 speed: 498.614 MHz
Processor #2 cache size: 1024 KB
Processor #3 Vendor: AuthenticAMD
Processor #3 Name: Dual Core AMD Opteron(tm) Processor 270
Processor #3 speed: 498.614 MHz
Processor #3 cache size: 1024 KB
Processor #4 Vendor: AuthenticAMD
Processor #4 Name: Dual Core AMD Opteron(tm) Processor 270
Processor #4 speed: 498.614 MHz
Processor #4 cache size: 1024 KB
output:from: php -v
PHP 5.2.9 (cli) (built: Aug 22 2009 03:00:45)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies
with eAccelerator v0.9.5.3, Copyright (c) 2004-2006 eAccelerator, by eAccelerator
with the ionCube PHP Loader v3.1.34, Copyright (c) 2002-2009, by ionCube Ltd., and
with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies
Some php.ini info:
max_execution_time 30 30
max_input_nesting_level 64 64
max_input_time 60 60
memory_limit 12M 12M
output_buffering no value no value
output_handler no value no value
zlib.output_compression Off Off
zlib.output_compression_level -1 -1
zlib.output_handler no value no value
Loaded Modules core mod_authn_file mod_authn_default mod_authz_host mod_authz_groupfile mod_authz_user mod_authz_default mod_auth_basic mod_include mod_filter mod_log_config mod_logio mod_env mod_expires mod_headers mod_unique_id mod_setenvif mod_version mod_proxy mod_proxy_connect mod_proxy_ftp mod_proxy_http mod_proxy_ajp mod_proxy_balancer mod_ssl prefork http_core mod_mime mod_dav mod_status mod_autoindex mod_asis mod_info mod_suexec mod_cgi mod_dav_fs mod_negotiation mod_dir mod_actions mod_userdir mod_alias mod_rewrite mod_so mod_bwlimited mod_php5 mod_security2
eAccelerator support enabled
Version 0.9.5.3
Caching Enabled true
Optimizer Enabled false
Memory Size 75,497,436 Bytes
Memory Available 32 Bytes
Memory Allocated 75,497,404 Bytes
Cached Scripts 1034
Removed Scripts 0
Cached Keys 0
eaccelerator.cache_dir /tmp/eaccelerator /tmp/eaccelerator
eaccelerator.check_mtime 1 1
eaccelerator.compress 0 0
eaccelerator.compress_level 9 9
eaccelerator.debug 0 0
eaccelerator.enable 1 1
eaccelerator.filter no value no value
eaccelerator.log_file no value no value
eaccelerator.name_space no value no value
eaccelerator.optimizer 1 1
eaccelerator.shm_max 0 0
eaccelerator.shm_only 1 1
eaccelerator.shm_prune_period 3600 3600
eaccelerator.shm_size 72 72
eaccelerator.shm_ttl 0 0
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| Posted by Ore Stone Radio, 09-28-2009, 09:17 AM |
| Try using Super Cache that works well http://wordpress.org/extend/plugins/wp-super-cache/
If it is still slow try upgrading to a dedi or upgrade your VPS.
|
| Posted by Hosting24, 09-28-2009, 09:21 AM |
| According to my personal experience, eaccelerator does not help a lot. Sometimes it even has more negative effects than positive.
|
| Posted by ridesign, 09-28-2009, 02:13 PM |
| my .js and image files take a long time to load even though they aren't that big?
|
| Posted by foobic, 09-28-2009, 09:36 PM |
| I've also found eaccelerator can slow down page loads on a VPS. I suspect it was because of a bottleneck on disk i/o. Eaccelerator needs to write the compiled scripts to disk the first time a site is visited - if the disk is overloaded this may take longer than actually compiling the script. And of course an overloaded hard-drive / array will slow down everything else too.
Run top - do you see a high %age for "wa"?
|
| Posted by Steven, 09-28-2009, 09:48 PM |
| You can configure eaccelerator to only use memory and no disk.
xCache however is superior to eaccelerator in every way.
|
| Posted by foobic, 09-28-2009, 10:16 PM |
| Sure, but on a VPS memory is also at a premium. At the time it seemed like the only resource that was freely available was CPU - the main thing that these accelerators are supposed to save!
Ultimately for me the solution was simply to switch to another provider where disk i/o isn't a problem. I'll look into xCache when I get the chance though - thanks for the tip.
|
| Posted by Steven, 09-29-2009, 01:45 AM |
| You are aware its allocating to memory regardless right?
|
| Posted by foobic, 09-29-2009, 02:54 AM |
| I wasn't, thanks for the heads-up. However since
I still suspect that the main reason for the poor results I saw was probably disk i/o.
|
| Posted by ridesign, 09-29-2009, 07:15 AM |
| I ran top and see around 13% for wa
|
| Posted by ridesign, 09-29-2009, 01:30 PM |
| Just some more information about my server:
15gb total hd size and 12 gb is used (74%)
so would freeing up space help to speed up my overall site, or are there other problems?
|
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