On Wed, May 18, 2011 at 11:39 AM, Riku Voipio riku.voipio@linaro.org wrote:
On 18 May 2011 16:53, Dave Martin dave.martin@linaro.org wrote:
On Tue, May 17, 2011 at 5:53 PM, Tom Gall tom.gall@linaro.org wrote:
Due to the poor I/O throughput, it looks a bit like we might be hitting the known SD card write behaviour issues; mounting with noatime and/or journaling disabled (noload for ext4) might also make a difference.
The long time of "mount" looks fishy. Are you sure you are booting with a clean filesystem?
Other than that we see that
- we start too much (cron, gdm, ...) for our use case
That's because we're using the ubuntu-netbook task, that brings a lot of additional daemons.
- too many shells started to parse shell scripts
I can see a lot of 'sh', 'cat', 'rm', 'sleep', 'run-parts', I think this could all be optimized.
As for finding files writes to on boot, using a "find / -mtime -2" or some variation to pick up files modified since boot is easiest.
Yeah, would be good to see what was actually changed at the filesystem. Having the bootchart with a usb driver can also help comparing the results.
Cheers,