Quote:
Originally Posted by Alfa1
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:
I deactivated the plugins and all went back to normal.
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I'm not surprised, and this is why I was saying yesterday that one needs to keep the functionality of these plugins under control.
However, I think the error messages that you are reporting are happening because you have switched on LDM's debug or tracing feature - they are not related to the *similarthreads* plugin. There is no reason at all why you need debug or trace in normal use - all it's doing is adding a lot of overhead in terms of database access. I suggest you disable this feature and see whether the other plugins are still causing problems.
Debug and tracing are found on LDM->admin->debug