… could even be more zealous. Pretty interesting to speed up point in time recovery when you dataset is 700GB. If you google… many scripts ready for the task. Snapshots work best with InnoDB, with MyISAM you’ll have to start the snapshot while… ray flip a bit on a drive, instead of crashing InnoDB, it will be caught by ZFS and the data will…
Post: Improving InnoDB recovery time
July 7, 2009 By 12 Comments
Speed of InnoDB recovery is known and quite annoying problem. It was discussed many …/~percona-dev/percona-xtradb/recovery-speed-hack/ tree. The patch by itself is quite small, I would ask InnoDB experts to review it: http://bazaar.launchpad.net/~percona-dev/percona-xtradb/recovery-speed-hack/revision/86 So…
Post: How InnoDB handles REDO logging
February 3, 2011 By 19 Comments
… configuration and hardware will affect the speed at which InnoDB can log. You can request that InnoDB force its REDO records to the… by enabling the innodb_recovery_stats option in Percona Server, which allows you to see the progress made during recovery. How does this affect throughput? As the REDO log in InnoDB uses a fixed length circular transaction log, the speed at…
Post: How to estimate time it takes Innodb to Recover ?
May 9, 2007 By 7 Comments
… things affecting recovery time you better to understand how Innodb recovery works. When Innodb recovers from logs it finds the last checkpoint time. Innodb has… will become more intensive in this case. It also affects recovery speed during recovery time – the larger buffer pool you have the more…
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… test with innodb_open_files=16384 I got about same crash recovery speed though with no warnings. So it looks like innodb_open_files…
Post: MySQL Crash Recovery
July 30, 2006 By 30 Comments
… fast is better solution. Innodb Recovery – Unless you have some hardware problems (99%) or found new Innodb bug (1%) Innodb recovery should be automatic and… affect recovery time significantly as well as your workload. I should also mention if you have innodb_file_per_table=1 your recovery speed will depend on number of Innodb tables you have, as well…
Post: Adjusting Innodb for Memory resident workload
March 25, 2009 By 11 Comments
… or most of their database (frequently Innodb) fits into memory. If all tables fit in Innodb buffer pool the performance for reads… and also make crash recovery fast even with very large log file – random IO is what usually limits recovery speed. Because files can be just read sequentially the read speed can be hundreds of megabytes per…
Post: Innodb Performance Optimization Basics
November 1, 2007 By 75 Comments
… innodb buffer pool innodb_log_file_size – This depends on your recovery speed needs but 256M seems to be a good balance between reasonable recovery time and good performance innodb_log_buffer…
Post: How to recover deleted rows from an InnoDB Tablespace
February 20, 2012 By 4 Comments
… objetive is Percona Data Recovery Tool for InnoDB. This is the tool that we use in our data recovery service and it’s…-14 13:10:08 ETA(in 00:00 hours). Processing speed: 104857600 B/sec All pages are stored in a single… following link: http://www.percona.com/docs/wiki/innodb-data-recovery-tool:mysql-data-recovery:generating_a_table_definition With the table definition…
Comment: Choosing proper innodb_log_file_size
July 30, 2006 By 12 Comments
…Innodb Recovery – Unless you have some hardware problems (99%) or found new Innodb bug (1%) Innodb recovery should be automatic and bring your database to… affect recovery time significantly as well as your workload. I should also mention if you have innodb_file_per_table=1 your recovery speed will depend on number of Innodb tables you have, as well…
