Re: [Fwd: [Fwd: Is sendfile all that sexy? (fwd)]]

[Rick Jones <raj@cup.hp.com>]

> The fact that I understand _why_ it is done that way doesn't mean that I
> don't think it's a hack. It doesn't allow you to sendfile multiple files
> etc without having nagle boundaries, and the header/trailer stuff really
> isn't a generic solution.

Hmm, I would think that nagle would only come into play if those files
were each less than MSS and there were no intervening application level
reply/request messages for each. So, perhaps rcp, but not FTP nor HTTP.
I'm not sure where the break-even point versus send() is on other OSes,
but it seems to be in the neighborhood of the typical ethernet MSS on
HP-UX.

As for the header/trailer stuff, you're right, I should have spec'd a
separate iovec for each :)

> Also note how I said that it is the BSD people I _despise_. Not The HP-UX

That misunderstanding would be the result of my entering the
conversation in the middle...

> implementation. The HP-UX one is not pretty, but it works. But I hold open
> source people to higher standards. They are supposed to be the people who
> do programming because it's an art-form, not because it's their job.

I'm not sure, but I think I've just been insulted !-) (in case it is not
clear, that is meant as a joke...)

rick jones
-- 
ftp://ftp.cup.hp.com/dist/networking/misc/rachel/
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to email, OR post, but please do NOT do BOTH...
my email address is raj in the cup.hp.com domain...
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