Re: [gentoo-soc] Some experiments on Fast Boot

[Arun Raghavan]

2009/4/2 Vladimir Skuratovich <skuratovich@×××××.com>:
> On Thu, Apr 02, 2009 at 02:34:36PM +0530, Arun Raghavan wrote:
>> 2009/4/2 Vladimir Skuratovich <skuratovich@×××××.com>:
>> >  wait in the session manager for it to be mounted, while X is
>> >  starting up? Not sure what to do with other filesystems, such ...
>>
>> This would need changes to the session manager, right? Is that really
>> something that we want to be doing?
>
> It depends on whether we just want a system that boots faster, or one
> that boots as fast as possible. And if we have such a system, we could
> offer a range of configuration options between "reliably boots on
> every imaginable configuration" and "boots very fast, but only on the
> specific machine it was installed".

IMO, the Gentoo Way would be to change upstream packages as little as
possible. OTOH, distro-neutral patches might work well, and we could
ship these with a USE="fastboot" option if upstream looks like they
might accept the patches.

[...]
>> Would be nice to look at, IMO. If you need it to be hosted somewhere,
>> mail them to me and I'll put them up.
>
> I've just sent them to you.

They're up at http://nemesis.accosted.net/gentoo/soc/bootchart/

>> I'm a little confused here. What system were these tests run on?
>
> The tests were run on a LFS system (with glibc 2.9, compiled with GCC
> 4.3.2 with optimizations, kernel 2.6.29 with a lot of patches).
> The file system for both / and /home is reiser4 with cryptcompress
> plugin (gzip compression - probably it could also impact performance?)
>
> The system uses initng, but it seems very similar to OpenRC in its boot
> script format.

The tests would really be a lot more meaningful on a Gentoo setup.

Cheers,
-- 
Arun Raghavan
(http://nemesis.accosted.net)
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