Comment 36 for bug 343215

Hi, thanks Anders!

I made some tests with my different kernel configurations, and I discovered that with original Ubuntu kernel 2.6.32 bootchart generates correctly the png, while with my custom kernel Ubuntu-2.6.32 and with my vanilla 2.6.33 it doesn't.

I had another problem with my custom kernels, both 2.6.32-ubuntu and 2.6.33-vanilla, which I considered more important, ureadahead was not working as expected, not generating its pack file in /var/lib/ureadahead and causing a really slow boot time.
On another bug report, which I can't found right now, I read that I should enable some features in kernel configuration, features that I disabled because .. why should I need a debug file system?!?

Enabling debug file system, kernel tracers and "Trace process context switches and events" inside kernel tracers solved.

So, fixing ureadahead by enabling those modules also fixed my problem with bootchart, now it works well with Ubuntu kernel 2.6.32-customized.

I still haven't tried with vanilla 2.6.33 because ureadahead needs a patch to be applied to kernel sources, and today I got a system perfectly running with at least one configutation, so maybe tomorrow I will patch the next kernel :-)

Hope it helps

Bye

emas