June 19, 2013

Post: Is there room for more MySQL IO Optimization?

…, FRM files, MySQL MyISAM system tables etc. Starting MySQL 5.5 MySQL uses asynchronous IO which should allow it to load IO subsystem very… users, load average: 0.00, 0.01, 0.05 System | Supermicro; PDSMi; v0123456789 (Other) Service Tag | 0123456789 Platform | Linux Release | Ubuntu 12.04…

Post: Modeling MySQL Capacity by Measuring Resource Consumptions

… ? You can take a look at procfs for MySQL process: root@ubuntu:/var/log/mysql# cat /proc/19018/stat 19018 (mysqld) S 1… average examines 20 rows, which means about 1 IO per 40 rows… which amounts to pretty IO bound load for me. But average is only average. It is a lot more interesting to…

Post: Quick comparison of MyISAM, Infobright, and MonetDB

… quick and dirty tinkering. I threw up an Ubuntu 9.04 small server on Amazon. (I used …query a few times, discarded the first run, and averaged the next three together. Notes on Infobright A … MySQL. It’s a complete server with a different optimizer, etc. This point was hammered home during the LOAD