June 19, 2013

Comment: Percona Server 5.1.69-14.7 now available: A drop in replacement for MySQL

… use the existing mysql data dir. But check http://www.percona.com/doc/percona-server/5.1/compatibility.html if you’re… 2) here is the list of compared features: http://www.percona.com/doc/percona-server/5.1/feature_comparison.html 3) we…

Post: MySQL Query Patterns, Optimized - Webinar questions followup

… temporary table to store an interim result set, and then use that to ultimately produce the result you want, that’s another… to be first, then look up matching rows in `title` by a secondary index.  But the result was that it created a… it pays to test all different solutions, and measure the resulting performance! Q: Bill, back to the query where you were…

Comment: ZFS on Linux and MySQL

… has an exclusive copy of that source data. (see http://www.dbms2.com/2013/01/05/database-virtualization-data/) – Kyle Hailey

Post: ZFS on Linux and MySQL

…, you could even be more zealous.  Pretty interesting to speed up point in time recovery when you dataset is 700GB.  If… and it is surprisingly cheap.  In fact the best tpcc results I got were when using compression.  I still have to… have an impact on performance with ZFS the impact is up front and the backups are almost free.

Comment: Sphinx search performance optimization: attribute-based filters

…, so we applied the technique described here, but the search results have gone from milliseconds to more than 43 seconds

Comment: Converting Character Sets

… *no* truncation, as explained in the manual – http://dev.mysql.com/doc/refman/5.1/en/alter-table.html “For a…

Post: How people are using MySQL... from 1 user to 100 million (upcoming conference talk)

… some caveats). Also, because of asynchronous replication, you can end up having inconsistent data on the nodes and encounter replication errors…

Post: Percona Server 5.1.69-14.7 now available: A drop in replacement for MySQL

…_CHANGED_PAGES query started returning data to indicate an incomplete result set. Bug fixed #1185040. Fixed the upstream bug #69379 which…

Comment: MySQL and Percona Server in LinkBench benchmark

The unstable result problem I met (e.g. 32G BP was faster than …

Comment: MySQL Performance Forums

… different table (unrelated to the select query) also get hang up. If I do show processlist, the update queries show up with state =’Updating’ or some others with state =’query end’; …