I’ve presented at two different venues about HandlerSocket recently and the number one question that always arises is: Why hasn’t HandlerSocket become more popular than it is? Considering how fast and awesome HandlerSocket is, it’s not seeing as rapid adoption as some might expect. I theorize that there are five reasons for this:
Percona Server 5.1.47-rel11.0
June 21, 2010 By 13 Comments
Dear Community, Percona Server version 5.1.47-rel11.0 is available for download now. The changes in this release include: New features Percona Server is now based on MySQL 5.1.47, and XtraDB is now based on InnoDB plugin 1.0.8. XtraDB now uses the fast recovery code released in InnoDB Plugin version 1.0.8, instead of Percona’s earlier fast-recovery code. [...]
FlashCache: more benchmarks
May 18, 2010 By 15 Comments
Previously I covered simple case with FlashCache, when data fits into cache partitions, now I am trying to test when data is bigger than cache. But before test setup let me address some concern (which I also had). Intel X25-M has a write cache which is not battery backuped, so there is suspect you may [...]
FlashCache: first experiments
May 10, 2010 By 18 Comments
I wrote about FlashCache there, and since that I run couple benchmarks, to see what performance benefits we can expect. For initial tries I took sysbench oltp tests ( read-only and read-write) and case when data fully fits into L2 cache. I made binaries for FlashCache for CentOS 5.4, kernel 2.6.18-164.15, you can download it [...]
5.0.87-build20 Percona binaries
November 18, 2009 By 3 Comments
Dear Community, We are pleased to present the 20th build of MySQL server with Percona patches. Comparing to the previous release it has following new features: The build is based on MySQL-5.0.87 innodb_rw_lock.patch is ported from InnoDB Plugin 1.0.3 To be compatible with RedHat RPM repository, the naming scheme has changed to
1 | <rpm name>-<mysql version>-<percona build version>.<buildnumber>.<redhat version>.<architecture>.rpm |
Example:
1 | MySQL-server-percona-5.0.87-b20.29.rhel5.x86_64.rpm |
[...]
SystemTap – DTrace for Linux ?
September 14, 2009 By 17 Comments
Since DTrace was released for Solaris I am missing it on Linux systems… It can’t be included in Linux by the same reason why ZFS can’t be – it’s licensing issue. Both ZFS and DTrace are under CDDL, which is incompatible with GPL. So you can see DTrace and ZFS on Solaris, FreeBSD, MacOS, but [...]
xtrabackup-0.7 (RC)
May 21, 2009 By 4 Comments
We announce next version of our xtrabackup tool and we consider it stable enough to put label RC on it. Changelist includes: – use O_DIRECT by default for handling InnoDB files – use posix fadvise call to disable OS caching of copying files – disable recovery of double buffer Also we added binary builds for [...]
xtrabackup-0.6
April 29, 2009 By 6 Comments
We announce next beta version of our xtrabackup tool. Changelist includes: – set innodb_fast_shutdown=1 on xtrabackup shutdown – set innodb_write_io_threads=10 by default for fast buffer_pool flushing during recovery – build xtrabackup with –with-extra-charsets=complex Bug #357653: innobackupex-1.5.1 –copy-back fails Bug #358194: 2nd-phase is very slow Bug #358266: xtrabackup-0.5 dies with SEGV on bad command line arguments [...]
xtrabackup-0.5, bugfixes, incremental backup introduction
April 7, 2009 By 6 Comments
I am happy to announce next build of our backup tool. This version contains several bugfixes and introduces initial implementation of incremental backup. Incremental backup works in next way. When you do regular backup, at the end of procedure you can see output:
1 2 3 4 5 6 7 8 9 10 | The latest check point (for incremental): '1319:813219999' >> log scanned up to (1319 813701532) Transaction log of lsn (1318 3034677302) to (1319 813701532) was copied. 090404 06:03:29 innobackupex: All tables unlocked 090404 06:03:29 innobackupex: Connection to database server closed innobackupex: Backup created in directory '/mnt/data/tmp' innobackupex: MySQL binlog position: filename 'db02-bin.001271', position 247627478 090404 06:07:58 innobackupex: innobackup completed OK! innobackupex: You must use -i (--ignore-zeros) option for extraction of the tar stream. |
which gives start point 1319:813219999 for further incremental backup. This point [...]
xtrabackup-0.4, going beta, progress meter
March 30, 2009 By 7 Comments
We added some new features to our backup tool, namely: Now we can handle log file taken during backup with size exceeding 4GB, it may happen if backup takes too long and you have a lot of updates on InnoDB tables Progress meter during recovery step, now you can see what percentage of log file [...]
