[PATCH] Add the VSL tag BereqEnd

[Poul-Henning Kamp]

In message <5267E541.3060708 at uplex.de>, Geoff Simmons writes:

>Martin suggested adding tReq to help find out if there are network
>latencies that slow down requests getting to backends in the first place
>(or slow down pipes). That would be good to know, but if there's no way
>to actually measure it within varnishd, we should re-consider having it
>at all.

Yes, it would be interesting, but no, I don't think we can measure
it, without polling the kernel with a unportable getsockopt() and stare
directly into the protocol control block.

Neither the polling nor the non-portability are popular with me.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.