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Changes between Initial Version and Version 1 of Ticket #610, comment 53

initial	v1
4	4	So it's almost certainly the mysql {{{wait_timeout}}} value was far too low for big DB operations... A search of Trac shows [https://tech.transitionnetwork.org/trac/ticket/555#comment:68 Chris' work to optimise MySQL] was the cause.
5	5
6		I'd guess we scraped though before under the 2min limit because the ''throughput'' on the old disks was faster than ZFS, and the site DB was a good deal smaller than now. But wrangling a 1/4 TB database needs a good timeout set, or very fast disks.
	6	I'd guess we scraped though before under the 2min limit because the ''throughput'' on the old disks was faster than ZFS, and the site DB was a good deal smaller than now. But wrangling a 1/4GB database needs a good timeout set, or very fast disks.
7	7
8	8	So this is now a 'minor' ticket that needs a little cleanups -- revert my php changes from a couple of comments back, and raise two new tickets with recommendations I've come to during this ticket...