Re: kernel.org mirroring (Re: [GIT PULL] MMC update)

From: rda <rda@google.com>
Date: Dec 10, 2006, 09:43 UTC
Message-ID: <87dcb0bd0612100143t21932358k42fe5044654e1981@mail.gmail.com>
In-Reply-To: <457995F8.1080405@zytor.com>

On 12/8/06, H. Peter Anvin <hpa@zytor.com> wrote:

Show 11 quoted lines

> Linus Torvalds wrote:
> > I could write a simple C caching thing that just hashes the CGI arguments
> > and uses a hash to create a cache (and proper lock-files etc to serialize
> > access to a particular cache object while it's being created) fairly
> > easily, but I'm pretty sure people would much prefer a mod_perl thing just
> > to avoid the fork/exec overhead with Apache (I think mod_perl allows
> > Apache to run perl scripts without it), and that means I'm not the right
> > person any more.
>
> True about mod_perl.  Haven't messed with that myself, either.
> fork/exec really is very cheap on Linux, so it's not a huge deal.

In the case of Perl scripts, it's not really the fork/exec overhead, but the Perl startup overhead that you want to try to optimize. But given your later statement (lots of spare cpu), this ends up just being a bit of a latency hit. In general, I think mod_perl has a