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Alfa1 · #**1964** 06-08-2009, 09:16 PM

The LDM Similarthreads plugin has a problem. At least when several thousand visitors try to open threads around the same time.

Threads would not open anymore. A mass of queries where launched. Tables started locking. Here are the queries that where running when my site went down:

Quote:

stop proces 1180 database_name localhost database_name
Query 32 updating DELETE FROM vb6_linksdebug WHERE settingtime <
'1243891011'
stop proces 1181 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891011'
stop proces 1183 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891013'
stop proces 1184 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891014'
stop proces 1191 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891016'
stop proces 1192 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891016'
stop proces 1193 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891016'
stop proces 1196 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891017'
stop proces 1200 database_name localhost database_name Query 32
Locked DELETE FROM vb6_linksdebug WHERE settingtime < '1243891017'

I deactivated the plugins and all went back to normal.

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01144 seconds Memory Usage 1,768KB Queries Executed 11 (?)
More Information
Template Usage: (1)SHOWTHREAD_SHOWPOST (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)bbcode_quote (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_box (1)post_thanks_button (1)post_thanks_javascript (1)post_thanks_navbar_search (1)post_thanks_postbit_info (1)postbit (1)postbit_onlinestatus (1)postbit_wrapper (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit reputationlevel showthread	Included Files: ./showpost.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/functions_bigthree.php ./includes/class_postbit.php ./includes/class_bbcode.php ./includes/functions_reputation.php ./includes/functions_post_thanks.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_postinfo_query fetch_postinfo fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete showpost_start bbcode_fetch_tags bbcode_create postbit_factory showpost_post postbit_display_start post_thanks_function_post_thanks_off_start post_thanks_function_post_thanks_off_end post_thanks_function_fetch_thanks_start post_thanks_function_fetch_thanks_end post_thanks_function_thanked_already_start post_thanks_function_thanked_already_end fetch_musername postbit_imicons bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete postbit_display_complete post_thanks_function_can_thank_this_post_start showpost_complete
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