Tag Archives: kernel

Postgres kernel regressions

Posted on 2010/09/13 by

While Mark was looking at MongoDB, I was playing comparing various aspects of MySQL and Postgres performance. Certain PG performance numbers I saw (40kqps vs 110kqps from MySQL) made me really upset, so I ended up discussing with people at … Continue reading →

Posted in mysql | Tagged , , | 6 Comments

Linux 2.6.29

Posted on 2009/03/24 by

2.6.29 was released. I don’t usually write about linux kernel releases, thats what Slashdot is for :), but this one introduces write barriers in LVM, as well as ext4 with write barriers enabled by default. If you run this kernel … Continue reading →

Posted in mysql | Tagged , , | 2 Comments

I/O schedulers seriously revisited

Posted on 2008/02/05 by

The I/O scheduler problems have drawn my attention, and besides trusting empirical results, I tried to do more of benchmarking and analysis, why the heck strange things happen at Linux block layer. So, here is the story, which I found … Continue reading →

Posted in mysql | Tagged , , , , , | 9 Comments