On Wed, May 18, 2011 at 3:39 PM, Riku Voipio <riku.voi...@linaro.org> wrote:
> On 18 May 2011 16:53, Dave Martin <dave.mar...@linaro.org> wrote:
>> On Tue, May 17, 2011 at 5:53 PM, Tom Gall <tom.g...@linaro.org> wrote:
>
>>> https://wiki.linaro.org/BootChart
>
>> 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
>
> 1) we start too much (cron, gdm, ...) for our use case
> 2) too many shells started to parse shell scripts

perf can do system-wide profiling to find how much time is spent in
different libraries / binaries.

---Dave

>
> 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.
>

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