Seeking public data for benchmarks
I have several side projects when time permits and one is that of benchmarking various MySQL technologies (e.g. MySQL 5.0,5.1,5.4), variants (e.g. MariaDB, Drizzle) and storage engines (e.g. Tokutek, Innodb plugin) and even other products like Tokyo Cabinet which is gaining large implementations.
Read moreSetting up a Virtual IP address (VIP)
These instructions are for CentOS/Redhat Linux distributions. Identify your current NIC’s and IP addresses in use. $ /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 00:30:48:98:9C:A6 inet addr:192.168.53.201 Bcast:192.168.53.255 Mask:255.255.255.0 inet6 addr: 0080::230:48ff:fe98:9ca6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6159779 errors:0 dropped:0 overruns:0 frame:0 TX packets:6137085 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:1158210510 (1.
Read moreWe need more CATs
Before you think I’ve posted an animal story in my MySQL category please read on. For reference, The RAT and the CAT is something I wrote back in 2006, that explains the CAT part.
Read moreHandy MySQL documentation indexes
Updated If your wanting to know more about MySQL Indexes on tables, then check out Understanding Different MySQL Index Implementations . I just discovered today in the MySQL 5.1 Reference Manual a handy set of additional indexes in the System Navigation section.
Read moreHave you checked your MySQL error log today?
As a consultant I would be rich if I made money every time when asking “Have you checked the MySQL error log?” Today’s special found in a 13GB MySQL server error log.
Read moreGetting started with Gearman
Gearman is an open source generic framework for distributed processing. At OSCON 2009 I attended the Gearman: Build Your Own Distributed Platform in 3 Hours tutorial. While it’s very easy to install Gearman, and follow the first example, if you missed the all important additional PHP steps listed on just one slide you may be left with the “‘Class ‘GearmanClient’ not found” error.
Read moreSetting up sysbench with MySQL & Drizzle
Sysbench is a open source product that enables you to perform various system benchmarks including databases. Drizzles performs regression testing of every trunk revision with a branched version of sysbench within Drizzle Automation .
Read moreconfigure: error: mysql_config executable not found
If your compiling a product that includes a dependency of MySQL, you can easily get the error configure: error: mysql_config executable not found I generally don’t see this problem, because I use MySQL binary tar files, however if you use MySQL packages, such as Ubuntu, you can easily miss the required dependency.
Read moreUnderstanding Different MySQL Index Implementations
It is important to know and understand that while indexing columns in MySQL will generally improve performance, using the appropriate type of index can make a greater impact on performance.
Read moremysql.com and related sites are down
I tried to go to mysql.com and Planet MySQL over my lunch break at OSCON 2009 to find the websites are down. Seems from conversions with fellow Drizzle colleagues this has been down for some time.
Read moreDrizzle Query logging
Currently Drizzle offers three (3) separate query logging plugins. These plugins offer an extensible means of gathering all or selected queries and provide the foundation for a query analyser tool. Additional filtering includes selecting queries by execution time, result size, rows processed and by any given regular expression via PCRE.
Read moreWhat’s new in MySQL 5.4.1
Absolutely nothing? 5.4.0 was released with a change in the MySQL Binary distributions , delivering only 1 64bit Linux platform and two Sun Solaris platforms. This was officially announced on April 21 2009 however the 5.
Read moreWhat to do at 3:25am
Look at MySQL bug reports of course? Well actually I’m writing multiple blog posts, and I was confirming additional reference sources and links when I came across MySQL Bug #29847 – Large CPU usage of InnoDB crash recovery with a big buf pool.
Read moreNever let your binlog directory fill up
Recently with a client while running a number of disaster recovery tests I came across a nasty situation which was not part of the original plan and provided a far worse disaster situation then expected.
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