May 25, 2012

Post: Introducing new type of benchmark

… NewOrder transactions Per Minute in tpcc-mysql). However, like Mark Callaghan mentioned in…pause. That rarely happens in real life. There are no systems that are… of day/week/month/year though). And what is important for an end… from being strict 0.5 sec, but 0.5 is the mean of this random generation…

Post: MySQL End Of Life (EOL) Policy

… questions was to look at the end of life – it is often bad idea to run MySQL versions past end of life as even security bugs may… to note even though MySQL 5.0 successor (MySQL 5.1) is still not released as GA, MySQL 5.0 Active LifeCycle will end in end of 2008, unless there are… as of MySQL 4.1 are followed we’ll soon see stop in MySQL community releases of MySQL 5.0 most likely before MySQL 5.1 will proven MySQL 5.0 replacement…

Post: MySQL Releases first real Community Release

… is of course if MySQL applies reasonable quality assurance to accepted code. What is about binaries ? MySQL 5.0.37 was rare exception of community release… End of Life ? One thing about community versions is they are expected to reach end of life faster, so you will need to upgrade to new MySQL

Post: Identifying the load with the help of pt-query-digest and Percona Server

…too many tools out there that can make your life easy. However, there is one such tool, pt-…0.1160 1.4% 5 0.0232 1.00 0.00 SELECT film # 9 0xCFC0642B5BBD9AC7 0.0987 1.2% 50 0.0020 1.00 0…execution plan used by MySQL. The end result might be that you end up limiting the number of results returned by …

Post: High-Performance Click Analysis with MySQL

of data processing in MySQL, you’re going to end up heavily I/O bound.  Listen to any of the talks at past MySQL… work by either using MySQL 5.1′s row-based replication, or in MySQL 5.0 and earlier, doing …defeat and accept table scans as a fact of life.” Table scans can be better than the …

Post: Aligning IO on a hard disk RAID – the Theory

…striping like in RAID0, 5, 6 or any variation of them (5+0, 1+0, 1+0+0 etc.). While IO inside the…ends up doing 5 IO operations – two to D4 and one on each of the other three disks instead of… may be interesting to see what are real life effects of misalignment, my benchmark results are in the second …

Post: Cache Performance Comparison

of all caches compared to MySQL Server, by measuring just the time it takes cache to return the data. In the real life…box (2Ghz AMD Sempron CPU) using MySQL 4.1 and PHP 5.0. For memcached access memcache extension … note MySQL is rather fast selecting from the table as well – on this pretty low end