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

From: "H. Peter Anvin" <[email-masked]>
Date: Sat, 09 Dec 2006 23:05:07 -0800

Martin Langhoff wrote:
> On 12/10/06, Jeff Garzik <[email-masked]> wrote:
>> > P.S. Can anyone post some benchmark comparing gitweb deployed under
>> > mod_perl as compared to deployed as CGI script? Does kernel.org use
>> > mod_perl, or CGI version of gitweb?
>>
>> CGI version of gitweb.
>>
>> But again, mod_perl vs. CGI isn't the issue.
> 
> IO is the issue, and the CGI startup of Perl is quite IO & CPU
> intensive. Even if the caching headers, thundering herds and planet
> collisions are resolved, I don't think you'll ever be happy with IO
> and CPU load on kernel.org running gitweb as CGI.
> 

I/O - nonexistent; that stuff will be in memory.

CPU - we have more CPU than you can shake a stick at, and it's 95+% idle.

*NOT AN ISSUE*.