June 19, 2013

Post: MySQL File System Fragmentation Benchmarks

… done using this script: The benchmark run with following simple shell script: [root@DB10 ~]# for i in 1 10 100 1000 10000; do ./benchmark.php $i 10000000; mysql -e’drop database test1′; mysqlto drop performance 20 times. Innodb in single tablespace mode showed following results

Post: Percona XtraBackup 1.6

…. (Alexey Kopytov) Bug #688211 – Using the –password option with innobackupex to specify MySQL passwords containing special shell characters (such as “&”) did not … the CMake scripts actually expect. (Alexey Kopytov) Bug #713799 – Dropping a table during a backup process could result in assertion …

Post: Updated msl (microslow) patch, installation walk-through!

… command line (shell) on the server and go to the directory …mysql-5.0.51a) % patch -p1 < ../patch-mysql-5.0.51a-msl.diff patching file include/my_time.h patching file scriptsto set this to “full_scan”, while in order to get only those which use on-disk temporary storage for intermediate results

Post: Analyzing the distribution of InnoDB log file writes

MySQL server running Percona XtraDB for a gaming workload (mostly inserts to the “moves” table), I used strace to…with a little more shell scripting, but the output from this was enough for me to massage into a decent format with another step or two! Here is the final result: …