Obsolete:MySQL 5.1 (fork)

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

This page contains historical information. It may be outdated or unreliable.

This is documentation for 5.1-wm build that is still running on db24 and db30, new builds are based off facebook tree

Currently new fork is being rolled out, based on lp:mysql-server/5.1 tree - with storage engine changes going into innodb_plugin engine.

Included Percona patches (from http://bazaar.launchpad.net/~percona-dev/percona-xtradb/extensions-1.0/files):

InnoDB-based replication positions
Multiple purge threads
Recovery performance: flushlist
LRU contention fixes

Domas' changes:

Online settable checksums calculation
Replication fixes (for 4.0-5.1 replication) (see http://mituzas.lt/2009/12/05/on-replication-compatibility/ )
Replication performance: hash building (see http://mituzas.lt/2009/12/08/crash-recovery-again/ )
Reordered INNODB STATUS with serious stuff at the top, increased output size
Removed some deprecation warnings

Wikimedia build params:

./configure --without-query-cache --without-geometry --with-plugins=innodb_plugin,blackhole \
     --enable-assembler --with-charset=binary --with-extra-charsets=all --with-server-suffix=-wm \
     --with-pstack --with-fast-mutexes --with-comment="Wikimedia Testing" --prefix=/usr/local/mysql-5.1-wm/ \
     CFLAGS="-g -O3 -fno-omit-frame-pointer" CXXFLAGS="-g -O3 -fno-omit-frame-pointer" \
     LDFLAGS="-fno-omit-frame-pointer"