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

[Dan Kegel <dank@alumni.caltech.edu>]

Dean Gaudet wrote:
> consider the case where you're responding to a pair of pipelined HTTP/1.1 
> requests. with the HPUX and BSD sendfile() APIs you end up forcing a 
> packet boundary between the two responses. this is likely to result in 
> one small packet on the wire after each response. 
> 
> with the linux TCP_CORK API you only get one trailing small packet

Tony Finch tells me that BSD also supports TCP_CORK; in fact, it had it first.
He wrote:
> BSDs that include T/TCP (pretty much all of them since 1995) have an
> option called TCP_NOPUSH which is equivalent to Linux's TCP_CORK. A
> pity the Linux people didn't know about it when they implemented their
> version.
>  
> #if defined(TCP_CORK) && !defined(TCP_NOPUSH)
> #define TCP_NOPUSH TCP_CORK
> #endif

Can anyone verify it resolves the problem Dean pointed out?

Now, Linus, does that make you hate BSD less? :-)
- Dan
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