Some time ago I get brand new IBM POWER6 server as the replacement for “old” P5 used to host Oracle database. Because we planed to use advanced virtualization with VIOS + LPAR/DLPAR I conceived the idea to use one spare partition for MySQL tests. Because I had no past experience with it and there […]Read more
So you’re running dedicated MySQL Linux box with plenty of memory, so the good question arises if you should have swap file enabled or disable it ? I’ve seen production successfully running on boxes both with and without swap file so it is not the question of you must do it this or […]Read more
Working on performance optimization project (not directly MySQL related) we did a test – creating 100 files writing 4K in the random file for some time and when checking the read speed on the files we end up with, compared to just writing the file sequentially and reading it back.
The performance difference […]
Found a great article about Linux IO Schedulers today which is quite interesting. It goes in details about schedulers and explains in which of workloads which of schedulers is best.
The interesting thing this article points out is – there are multiple versions of each of the schedulers, while name remains […]