On Thu, Jul 5, 2012 at 6:28 PM, Adam Williamson <awilliam(a)redhat.com> wrote:
Hey, folks. Just in case it hasn't come up, I didn't see any
discussion
of this article yet:
http://www.phoronix.com/scan.php?page=article&item=fedora17_arm_wrest...
Phoronix is of course not always on the mark, but their results seem to
suggest there's a config issue in the Fedora kernel regarding the
OMAP4460 core used in the Pandaboard ES - apparently cpufreq support is
lacking, and consequently the CPU doesn't run at full speed. The
benchmarks seem to confirm this.
Yes, we've already committed a fix but it looks like we'll also need a
different uboot build in the short term or we need to work out when
the needed work for the old pandaboard will make the mainline kernel.
The cpufreq driver was only in mainline as of 3.4 and it also has
other dependencies so it's not quite as straightforward as he makes
out based on the Fedora upstream requirements.
Also I've no idea why he was using the llvmpipe X driver where the
image uses the omap driver, the ubuntu driver of course has a binary
blob driver.
Peter