severity 618029 wishlist
stop
Hi
Thibaut Girka helpfully pointed out that "-C gzip" is just a data flag
to mkimage that wont do any compression itself. However, U-Boot does
seem to be doing decompression of "multi" images (at load time) and of
the initrd (at bootm time). It seems that both options are open for
the initrd, and some might be faster than others (for instance U-Boot
recently gained support for L2 cache on some CPU so that decompression
is much faster as the code and data stays in the caches), but there is
no case of double-gzip or double-gunzip as I initially feared, hence
lowering severity.
We could look at boot speed and various compression options to make the
best compromise of size of the U-Boot images and boot time.
Bye,
On Sun, Mar 13, 2011, Loïc Minier wrote:
> flash-kernel currently calls mkimage -C gzip when creating uInitrds for
> various platforms, but Debian initrds are already gzipped by
> initramfs-tools, so it seems like a waste of CPU cycles at flash-kernel
> and boot time.
>
> Cheers,
> --
> Loïc Minier
>
>
>
--
Loïc Minier
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