[mythtv] Ticket #9773: Deadlocked BE

Rob Smith kormoc at gmail.com
Mon May 16 17:26:37 UTC 2011

2011/5/16 Warpme <warpme at o2.pl>:
> Daniel,
> Thx for Your time.
> Indeed - at some point of time I started to consider also my environment.
> I tested various mysql versions (5.1.50,  5.1.51 & 5.5.12) but without
> improvement.
> Maybe I should start with clean tables ?
> My current DB is 2,5y old (schema started at 0.21 and incrementally upgraded
> to current master).
> Unfortunately issue with starting with clean tables is that I have to move
> 1,2T recordings.
> If somebody will help me with exact list of tables which should be restored
> on clean DB - I can try eventually.
> But basic question is: is this effort worth enough (in other words: is
> probability, that be deadlock is result of some internal DB non-optimal
> state, enough high to justify DB tables delete+selective restore ?)
> Sorry for this type of question but experience and good sense is crucial
> here as I'm working with production system....
> On the other hand: is this possible that piece of code which is blocked is
> blocked by environment issue - I mean not DB but rest of environment like Qt
> or DVB drivers bug ?
> I'm trying understand why majority of others users don't have this issue.
> br

During the deadlock, log into mysql and run:

and send us the results. We'll tell you if it's a locked table or
other db issue.

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