Not everyone may know this, but there are precious few innodb crash recovery tests available. Some folks have noticed this and asked for…_CRASHED (101) I also took pains to ensure that the randgen workload was having an effect on the test tables between crash/recovery… –randgen-seed=time. For those test cases that are written to take advantage of this (like our shiny new Innodb crash tests!), it…
Post: Improving InnoDB recovery time
July 7, 2009 By 12 Comments
… times, see: http://bugs.mysql.com/bug.php?id=29847 http://dammit.lt/2008/10/26/innodb-crash-recovery/ This is problem when your InnoDB crashes, it may takes long time to start. Also it affects…
Post: MySQL Crash Recovery
July 30, 2006 By 26 Comments
… the problems. As I already wrote innodb_log_file_size and innodb_buffer_pool_size affect recovery time significantly as well as your workload… may experience related to MySQL Crash Recovery – Restoring data from backup, corrupted Innodb tablespace recovery etc but I should write about them some other time.
Post: Innodb Recovery - Is large buffer pool always better ?
July 17, 2007 By 3 Comments
… with Innodb crash recovery on box with large amount of memory (64GB) with Innodb Buffer pool configured to be just a bit over 20GB. Innodb recovery was taking long hours with reasonably sized Innodb log files… pages in the flush list which takes a lot of time… Innodb is smart about a way it flushes pages, it tries…
Post: Innodb crash recovery update
May 22, 2007 By 3 Comments
I have not had a serious Innodb corruptions for a while, typically even if it happened it … worry. If it is global bug it should have been Innodb recovery show stopper while it goes back so many releases (5… isolated from all scripts which may bother it for the time of recovery. For complex systems it may be very hard to…
Post: How to estimate time it takes Innodb to Recover ?
May 9, 2007 By 7 Comments
… set innodb_log_file_size large. We however usually recommend caution as it may significantly increase recovery time if Innodb needs to do crash recovery. I’m often something like what recovery time would expect for 512MB total…
Post: How innodb_open_files affects performance
November 18, 2009 By 4 Comments
…InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files… InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer… InnoDB: Doing recovery…
Post: Recovering Innodb table Corruption
July 4, 2008 By 19 Comments
… crash even with innodb_force_recovery=1 080704 0:22:53 InnoDB: Assertion failure in thread 1158060352 in file btr/btr0btr.c line 3235 InnoDB….com. InnoDB: If you get repeated assertion failures or crashes, even If you get such assertion failures most likely higher innodb_force_recovery values… same time I saw some data could be selected. The problem is there is some buffering taking place and as MySQL crashes…
Post: Recovery beyond data restore
August 2, 2008 By 11 Comments
… like Innodb corruption or soft crash which you can’t recover promptly enough. In this case most typically you would plan recovery by… restore from several of backup generations and do point in time recovery. Timing recovery is also important. Especially for write intensive environments it may…
Post: Choosing proper innodb_log_file_size
July 3, 2006 By 12 Comments
… to Innodb tables decent size of innodb_log_file_size is important for MySQL Performance. However setting it too large will increase recovery time, so in case of MySQL crash…
