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Mashiah Davidson:
did you change the upper limit for @@max_heap_table_size on cassia?
Hm... I knew I forget to mention something. Yes, maximum_max_heap_table_size is now set to 128MB.
With such a limitation I can say I spen years of coding for nothing, because Golem's requirements to temporary table sizes are depend on actual wiki size and sometimes go up to 4 GB. I do not think this can be improved.
4GB is *way* too much; we don't have even close to that much free memory available on the MySQL servers. When we discussed this by email, I had the impression you had reduced its memory usage a lot -- if it's using 4GB *after* being reduced, I hate to think what it required previously...
- river.