Re: Image scaling performance

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 26.02.2015 18:10, Michael Zimmermann wrote:
> Is there a way to create a performance profile so I can see what
> exactly needs so much time? I don't have JTAG but maybe UART+GDB could
> help with that.
Have a look at boot_time.
> adding prints is kind of annoying :D
>
> On Thu, Feb 26, 2015 at 5:44 PM, Vladimir 'φ-coder/phcoder' Serbinenko
> <address@hidden> wrote:
> > On 25.02.2015 19:46, Michael Zimmermann wrote:
> > > I'm still questioning the efficiency
> > > math operations because on slow devices there are other bottlenecks of
> > > the same kind(like de/compression).
> >
> > That's pure speculation at that point. GRUB has 3 compression algorithms:
> > - minilzo. Has some divisions in parts which GRUB doesn't use. Those parts
> > are easily disablable and I'll just do so.
> > - gzip. Uses division only in zlib header check. I'll optimise it a little
> > but it's only one division in header check, not in compressed data body.
> > - xz. No divisions
> >
> >
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