Joshua Baker-LePain wrote:
That's the wrong patched kernel. You'd need to be using one of the kernels in http://people.redhat.com/thenzl/kernel/ -- kernel-2.6.18-93.el5.bz444759.x86_64.rpm.
(facepalm) Thanks for setting me right.
Anyway, I did a test with the 2.6.18-93.el5.bz444759 kernel and there's no difference: 65 minutes, 27 MB/s. Looks like it doesn't matter which kernel I use, at least for this simple test with dd.
I wonder if a test closer to real life, such as reading/writing stuff from/to MySQL, would produce different results. I guess there's only one way to find out. ;-)
I'd be interested in a way of telling from within the OS whether or not MWI is enabled...
That would be nice.