From: Mike Galbraith <redacted>
Date: Sat, 25 Oct 2008 07:58:53 +0200

I spent long day manweeks trying to bisect and whatnot.  It's immune to
my feeble efforts, and my git-foo.

I understand, this is what happened to me when I tried to look into
the gradual tbench regressions since 2.6.22

I guess the only way to attack these things is to analyze the code and
make some debugging hacks to get some measurements and numbers.