[U-Boot] boot-up time optimization. Where to start?

Simon Glass
2011-05-11T05:12:26Z

Hi,

I will post a patch. Also we have a 'time' command we could upstream.

Regards,
Simon

On Mon, May 9, 2011 at 3:49 AM, Detlev Zundel <dzu@denx.de> wrote:

> Hi Simon,
>
> [...]
>
> > I have a patch which displays boot time in microseconds if it is of
> > interest to anyone:
> >
> > Timer summary in microseconds:
> > Mark Elapsed Stage
> > 0 0 awake
> > 193,298 193,298 usb_start
> > 1,342,411 1,149,113 eth_start
> > 3,767,039 2,424,628 bootp_start
> > 3,790,121 23,082 bootp_stop
> > 3,790,293 172 tftp start
> > 4,761,459 971,166 tftp done
> > 4,761,489 30 bootm_start
> > 4,892,145 130,656 start_kernel
>
> Of course we are interested, please show us the code. Such code, even
> if it does not get into mainline can be a good starter for other people
> benchmarking their port.
>
> Thanks
> Detlev
>
> --
> "One of my most productive days was throwing away 1000 lines of code."
> - Ken Thompson.
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