(WURFL - PHP API) - update_cache set to "true" on a server with high traffic

[iceaceman]

SERVER SETUP:
- LAMP

DEVICE DETECTION:
- wurfl - php api

Server Lowest Traffic : 20 request per minute

PROBLEM :
When wurfl started an auto update our server Load Average starts to fire up from 1.00 to 200.00, and eat up almost 90% of memory.

QUESTION:
1) Does anybody here who encountered the same problem when auto_update set to true under wurfl_config.php?

2) If it's true that the configuration on auto_update is the real culprit of Load Average fire up, what are the best practice or alternative to do an update on wurfl?

3) On our apache log I saw this error which occurred after auto_update kick-in...

[Thu Jul 29 00:01:24 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:01:24 +0800 [domU-12-31-39-04-2C-52 18383][parse] Trying to load XML patch file: ./sylph/wurfl_patch_29jun2010.xml
[Thu Jul 29 00:01:24 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:01:24 +0800 [domU-12-31-39-04-2C-52 18383][parse] Loaded, now parsing
[Thu Jul 29 00:01:24 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:01:24 +0800 [domU-12-31-39-04-2C-52 18383][parse] Updating device generic 
[Thu Jul 29 00:01:24 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:01:24 +0800 [domU-12-31-39-04-2C-52 18383][parse] generic: setting config_instruction_id=default
[Thu Jul 29 00:01:24 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:01:24 +0800 [domU-12-31-39-04-2C-52 18383][parse] generic: setting id=generic

....
.....

[Thu Jul 29 00:03:14 2010] [error] [client 124.105.12.35] Thu, 29 Jul 2010 00:03:14 +0800 [domU-12-31-39-04-2C-52 18378][parse] ERROR: Unable to remove ./sylph/tmp/sylph-data/agent2id.php4

Why I've got this error?


Here's the wurfl_config.php :

define("WURFL_CONFIG", true);
define("DATADIR", $Sylph . 'tmp/sylph-data/');
define("WURFL_PARSER_FILE", $Sylph . 'wurfl_parser.php');
define("WURFL_CLASS_FILE", $Sylph . 'wurfl_class.php');
define ("WURFL_FILE", $Sylph. "wurfl_21jun2010.xml");
define ("WURFL_LOG_FILE", DATADIR."wurfl_" . date('Y-m-d') . ".log");
define ("LOG_LEVEL", LOG_INFO);
define ("WURFL_USE_CACHE", true);
define ("WURFL_USE_MULTICACHE", false);
define ("CACHE_FILE", DATADIR."wurfl_cachefile.php");
define ("MULTICACHE_DIR", DATADIR."multicache/");
define ("MULTICACHE_TMP_DIR", DATADIR."multicache_tmp/");
define ("MULTICACHE_TOUCH", DATADIR."multicache.lockfile");
define ("MULTICACHE_SUFFIX",".php");
define ("WURFL_AUTOLOAD", true);
define ("WURFL_CACHE_AUTOUPDATE", true);
define ("WURFL_AGENT2ID_FILE", DATADIR."agent2id.php4");
define ("MAX_UA_CACHE", 50);
define("WURFL_PATCH_FILE", $Sylph . 'wurfl_patch_29jun2010.xml');
define("WURFL_PATCH_DEBUG", true);

[firemax]

is this folder writable? "/sylph/tmp/sylph-data/"

[GumSlone]

i had problems with wurfl a time ago (not because of autoupdate), the server crashed alway on my high traffic site where i have used it, so i have removed it.

if you use wurfl for redirects you should try other ways to redirect your mobile traffic.

[CreativityKills]

I was guna use WURFL for one of my projects bt 2 many issues i had to resort to coding one on my own.

[iceaceman]

@firemax... after changing the file permissions no errors was recorded and server load is not firing-up. For now it's doing good because it survives our promo day where we received at least 50-60 request per minute which register 1.90 on our server load.


fyi... server is running 4 Dual-Core AMD Opteron(tm) Processor 2220 with 8gb memory


@GumSlone & mobileGIGS.... using other software or customizing a new one is not possible at this time.


Anyway, thanks for the help guys!