I was actually exploring inotify-tools for something else, but they can also be handy for seeing what goes on below a mysqld process. inotify hooks into the filesystem handlers, and sees which files are accessed. You can then set triggers, or just display a tally over a certain period. It has been a standard Linux [...]
Filed under: Software and tools by arjen on Friday, July 31, 2009 | Social tagging: analysis > inotify > inotify-tools > linux > monitoring > mysql > mysql server > mysqld > open query > tools
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Of course it’s not quite that simple. I’ve just decomissioned an old Red Hat 7.1 box (hosted dedicated server) that had been in service since 2002, so about 7 years. Specs? Celeron 1.3GHz, 512M, 60GB HD. Not too bad in the RAM and disk realm. It did a good job but goodness am I glad [...]
Filed under: Uncategorized by arjen on Thursday, July 30, 2009 | Social tagging: cloud > hosting > mysql > VM > xen
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It is easy to overlook certain “non-deterministic” functions in your queries which will prevent the query cache from caching its results. Many cases, particularly date/time related queries, can actually benefit from the cache, and there is a simple workaround.
Filed under: Uncategorized by toby on Wednesday, July 22, 2009 | Social tagging: mysql "query cache" cache caching optimisation performance tuning
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I like the 5.4 developments, overall. It has useful stuff and is being developed and released a reasonable pace. Good progress. While perusing the MySQL 5.4.4 changelog, one particular change drew my attention, since it’s been (re)appearing since 2006. It’s the removal of the TYPE= keyword which was obsoleted since MySQL 4.1 in favour of [...]
Filed under: Uncategorized by arjen on Friday, July 17, 2009 | Social tagging: ALTER TABLE > CREATE TABLE > ENGINE > mysql > TYPE
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Unless you have been hiding under a rock, you have one way or the other heard about the king of pop passing away. This is in my opinion a great loss to the world, as this man was like a god to me when I was a little boy. Besides it being really sad that [...]
Filed under: Uncategorized by Walter Heck on Friday, July 3, 2009 | Social tagging: Michael Jackson > mysql > traffic
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In today’s gp/bp an open door will be kicked in: take your backups offsite! I was actually tempted to create a poll to see how many of you do not have proper backups, and how many of you do not take those backups offsite. It is a simple piece of advice and relatively simple to [...]
Filed under: Good practice / Bad practice by Walter Heck on Wednesday, July 1, 2009 | Social tagging: backup > mysql > offsite
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