I have some threads in my Discuss forum with number of characters close to 30 000 in one post (`discuss.maximum_post_size` setting).
I have to wait 30-60 sec when I'm trying to view one these threads (or even board with these threads). And it often gives me an error
"504 Gateway Time-out". Occasionally I'm able to view these threads, but I still have to wait for server response for a long time.
However I can view all other threads (with small posts) without such delay and errors.
Also I can navigate all site pages, manager panel pages and forum threads with small posts while I'm waiting for server response on these threads with big posts.
Error log after this issue:
[2013-03-27 21:13:55] (ERROR @ /index.php) Error HY000 executing query: SELECT `modTemplateVar`.`id` AS `modTemplateVar_id`, `modTemplateVar`.`source` AS `modTemplateVar_source`, `modTemplateVar`.`property_preprocess` AS `modTemplateVar_property_preprocess`, `modTemplateVar`.`type` AS `modTemplateVar_type`, `modTemplateVar`.`name` AS `modTemplateVar_name`, `modTemplateVar`.`caption` AS `modTemplateVar_caption`, `modTemplateVar`.`description` AS `modTemplateVar_description`, `modTemplateVar`.`editor_type` AS `modTemplateVar_editor_type`, `modTemplateVar`.`category` AS `modTemplateVar_category`, `modTemplateVar`.`locked` AS `modTemplateVar_locked`, `modTemplateVar`.`elements` AS `modTemplateVar_elements`, `modTemplateVar`.`rank` AS `modTemplateVar_rank`, `modTemplateVar`.`display` AS `modTemplateVar_display`, `modTemplateVar`.`default_text` AS `modTemplateVar_default_text`, `modTemplateVar`.`properties` AS `modTemplateVar_properties`, `modTemplateVar`.`input_properties` AS `modTemplateVar_input_properties`, `modTemplateVar`.`output_properties` AS `modTemplateVar_output_properties`, `modTemplateVar`.`static` AS `modTemplateVar_static`, `modTemplateVar`.`static_file` AS `modTemplateVar_static_file`, `Source`.`id` AS `Source_id`, `Source`.`name` AS `Source_name`, `Source`.`description` AS `Source_description`, `Source`.`class_key` AS `Source_class_key`, `Source`.`properties` AS `Source_properties`, `Source`.`is_stream` AS `Source_is_stream` FROM `modx_site_tmplvars` AS `modTemplateVar` LEFT JOIN `modx_media_sources` `Source` ON `modTemplateVar`.`source` = `Source`.`id` WHERE `modTemplateVar`.`name` = ? ORDER BY `modTemplateVar`.`id` ASC - Array
(
[0] => HY000
[1] => 2006
[2] => MySQL server has gone away
)
[2013-03-27 21:13:55] (ERROR @ /index.php) Error HY000 executing statement:
Array
(
[0] => HY000
[1] => 2006
[2] => MySQL server has gone away
)
[2013-03-27 21:13:55] (ERROR @ /index.php) Error HY000 executing statement:
INSERT INTO `modx_session` (`id`, `access`, `data`) VALUES ('23d06d398e9e65f71efe09450af1fec2', 1364208025, 'modx.user.contextTokens|a:2:{s:3:\"mgr\";i:1;s:3:\"web\";i:1;}modx.user.0.resourceGroups|a:1:{s:3:\"mgr\";a:0:{}}modx.user.0.attributes|a:2:{s:3:\"web\";a:4:{s:16:\"modAccessContext\";a:1:{s:3:\"web\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}}s:22:\"modAccessResourceGroup\";a:2:{i:1;a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}i:2;a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}}s:17:\"modAccessCategory\";a:0:{}s:28:\"sources.modAccessMediaSource\";a:0:{}}s:3:\"mgr\";a:4:{s:16:\"modAccessContext\";a:1:{s:3:\"web\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}}s:22:\"modAccessResourceGroup\";a:0:{}s:17:\"modAccessCategory\";a:0:{}s:28:\"sources.modAccessMediaSource\";a:0:{}}}modx.user.0.userGroupNames|a:0:{}modx.mgr.user.token|s:52:\"modx50a65ac57f5327.42215688_15151c290ba78f8.81515876\";modx.mgr.session.cookie.lifetime|i:604800;modx.user.1.userGroupNames|a:5:{i:0;s:15:\"High Inquisitor\";i:1;s:13:\"Forum Members\";i:2;s:19:\"Ordo Templi Luminis\";i:3;s:9:\"Commander\";i:4;s:7:\"Council\";}modx.user.2.userGroupNames|a:1:{i:0;s:13:\"Forum Members\";}modx.user.20.userGroupNames|a:2:{i:0;s:13:\"Forum Members\";i:1;s:19:\"Ordo Templi Luminis\";}modx.user.23.userGroupNames|a:3:{i:0;s:13:\"Forum Members\";i:1;s:10:\"Inquisitor\";i:2;s:19:\"Ordo Templi Luminis\";}modx.user.24.userGroupNames|a:2:{i:0;s:13:\"Forum Members\";i:1;s:19:\"Ordo Templi Luminis\";}modx.user.21.userGroupNames|a:2:{i:0;s:13:\"Forum Members\";i:1;s:19:\"Ordo Templi Luminis\";}modx.web.user.token|s:52:\"modx50a65ac57f5327.41215388_151532e348578e9.18153524\";modx.web.session.cookie.lifetime|i:604800;modx.user.1.userGroups|a:5:{i:0;i:1;i:1;i:2;i:2;i:4;i:3;i:6;i:4;i:7;}')
Array
(
[0] => HY000
[1] => 2006
[2] => MySQL server has gone away
)
I tried to search something about "HY000 2006 error", and I've found an advise to enlarge `max_allowed_packet` mysql setting. But when I tried to find out via phpmyadmin
show variables like 'max_allowed_packet';
it gives me
max_allowed_packet = 335544320. This seems quite enough.. May be these errors in log are not about my issue. Can they be about failures in access to site pages (e.g. by search-bots) while MySQL server was overloaded by forum?
And yes, I have shared-hosting. But I have never had any problems with forum software like phpbb or smf with tens of users logged in at the same time. Even with big posts. And, as I said above, I do not have problems while viewing other threads. Only threads with big posts.
I looked resource usage details in my hosting back-end. I have close to 100% cpu usage. Processes and memory usage are barely reach 20% of allowed value.
What causes such long and heavy processing of long posts? Is it just in my forum or somebody have the same issue?
☆ A M B ☆
☆ A M B ☆
It's not photoshop))