D&C GLug - Home Page

[ Date Index ] [ Thread Index ] [ <= Previous by date / thread ] [ Next by date / thread => ]

Re: [LUG] Linux booting in less than 1.5 seconds

 

Gordon Henderson wrote:
> On Thu, 16 Jul 2009, Paul Hirst wrote:
>
>   
>> On Wed, 2009-07-15 at 11:06 +0100, Rob Beard wrote:
>>
>>     
>>> As far as I know (after watching the demo video) they use an
>>> uncompressed kernel with only drivers which the hardware requires and
>>> use DMA access to transfer the stuff into memory, I gather too that the
>>> hardware is pretty limited due to it being designed for in-car use.
>>>       
>> I would have thought a gzip compressed kernel would make the most sense.
>> They are bzip2 compressed by default aren't they? Which is pretty slow
>> to decompress compared to gzip.
>>
>> Can you still do 'make zImage' rather than 'make bzImage'? I haven't
>> compiled a kernel in a number of years now. The last one must have been
>> the last Gentoo system I built.
>>     
>
> I'll give it a try soon, but the current kernels now support LZMA 
> compression which is supposed to be much faster to uncompress.
>
> Gordon
>
>   
Just wondering if this is a legacy feature or whether loading and 
decompressing is faster than just loading an already decompressed 
kernel? Obviously system dependent but intrigued to see any figures...
Tom te tom te tom



-- 
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html