One of our customers asked me whether it’s safe to enable the so-called USER_STATISTICS features of Percona Server in a heavy-use production server with many tens of thousands of tables. If you’re not familiar with this feature, it creates some new INFORMATION_SCHEMA tables that add counters for activity on users, hosts, tables, indexes, and more. [...]
XtraDB in CPU-bound benchmark
December 18, 2008 By Leave a Comment
Peter said me that previous results http://www.mysqlperformanceblog.com/2008/12/18/xtradb-benchmarks-15x-gain/ are too marketing, and we should show other results also. Here is the run for CPU Bound,or it would be more correctly to say in-cache benchmark, because there is a lot of CPU remains idle. This run is exactly the same as Disk Bound but with innodb_buffer_pool_size=8G which [...]
How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
Our customers or prospective customers often ask us how we do a performance audit (it’s our most popular service). I thought I should write a blog post that will both answer their question, so I can just reply “read all about it at this URL” and share our methodology with readers a little bit. This [...]
Percona build7 with latest patches
November 14, 2008 By 26 Comments
We made new binaries for MySQL 5.0.67 build 7 which include patches we recently announced. The -percona release includes:
1 2 3 4 5 6 7 8 9 10 11 12 | | innodb_check_defrag.patch | Session status to check fragmentation of the last InnoDB scan | 1.0 | Percona <info@percona.com> | GPL | The names are Innodb_scan_* | | userstatsv2.patch | SHOW USER/TABLE/INDEX statistics | V2 | Google | GPL | Added INFORMATION_SCHEMA.*_STATISTICS | | show_patches.patch | SHOW PATCHES | 1.0 | Jeremy Cole | N/A | | | innodb_io_patches.patch | Cluster of past InnoDB IO patches | 1.0 | Percona | GPL | This patch contains fixed (control_flush_and_merge_and_read, control_io-threads, adaptive_flush) | | innodb_show_hashed_memory.patch | Adds additional information of InnoDB internal hash table memories in SHOW INNODB STATUS | 1.0 | Percona <info@percona.com> | GPL | | | innodb_io_pattern.patch | Information schema table of InnoDB IO counts for each datafile pages | 1.0 | Percona <info@percona.com> | GPL | INFORMATION_SCHEMA.INNODB_IO_PATTERN | | microsec_process.patch | Adds INFOMATION_SCHEMA.PROCESSLIST with TIME_MS column | 1.0 | Percona <info@percona.com> | GPL | | | innodb_locks_held.patch | Add locks held, remove locked records in SHOW INNODB STATUS | 1.0 | Baron Schwartz <baron@xaprb.com> | GPL | Bug #29126 fix | | microslow_innodb.patch | Extended statistics in slow.log | 1.1 | Percona <info@percona.com> | GPL | | | mysqld_safe_syslog.patch | Patch allows redirect output of error.log to syslog-ng | 1.0 | Percona <info@percona.com> | GPL | Ported from Debian | | innodb_fsync_source.patch | Information of fsync callers in InnoDB | 1.0 | Google | GPL | | | innodb_show_bp.patch | show innodb buffer pool content | 1.0 | Percona <info@percona.com> | GPL | | |
and -percona-highperf release additionaly includes
1 2 | | split_buf_pool_mutex_fixed_optimistic_safe.patch | InnoDB patch to fix buffer pool scalability | 1.0 | Yasufumi Kinoshita | BSD | | | innodb_rw_lock.patch | Fix of InnoDB rw_locks | 1.0 | Yasufumi Kinoshita | BSD | |
You can download RPMs for RedHat / CentOS 4.x and 5.x for x86_64, binaries, sources and patches there
New SpecJAppServer results at MySQL and Sun.
November 12, 2008 By Leave a Comment
As you likely have seen Sun has posted the new SpecJAppServer Results More information from Tom Daly can be found here These results are quite interesting for me as I worked on some of the previous SpecJAppServer Benchmarks several years ago while being employed by MySQL. These are great results, plus they can be relevant [...]
