[mythtv-commits] Ticket #9792: Deadlocked scheduler

MythTV noreply at mythtv.org
Fri Jun 3 13:40:26 UTC 2011


#9792: Deadlocked scheduler
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 Reporter:  warped <warpme@…>      |          Owner:
     Type:  Bug Report - General   |         Status:  new
 Priority:  minor                  |      Milestone:  unknown
Component:  MythTV - General       |        Version:  Trunk Head
 Severity:  medium                 |     Resolution:
 Keywords:                         |  Ticket locked:  0
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Comment (by warpme@…):

 Hi,[[BR]]

 After week of heavy stress tests I'm happy to report that if I optimize
 mysql query caching with:[[BR]]

 "Do not cache results in or retrieve results from the query cache"[[BR]]

 system works stable. Test scenarios, results I will post on relevant to
 ticket9773 thread on dev-list as I think this ticket and 9773 have common
 root cause related to mysql running on ArchLinux.[[BR]]
 Situation where mysql query caching with:[[BR]]

 "Cache all cacheable query results except for those that begin with SELECT
 SQL_NO_CACHE" and [[BR]]
 "Cache results only for cacheable queries that begin with SELECT
 SQL_CACHE"[[BR]]

 are giving deadlocks is still strange for me as issue is with 3 diferent
 mysql versions and 4 full system upgrades within quite long periods of
 time (so almost all key OS components are changed).
 I think both tickets can be closed with status invalid.[[BR]]
 Big thx for Your help !

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/9792#comment:7>
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