[Hackage] #447: do parallel builds
duncan.coutts at worc.ox.ac.uk
Sat Jan 17 12:16:33 EST 2009
On Wed, 2009-01-14 at 00:09 +0900, Curt Sampson wrote:
> On 2009-01-10 16:01 -0000 (Sat), dunacn wrote:
> > Also downloads seem to be serialised, again because there is probably
> > little benefit to making multiple connections to the same server.
> You evidently don't live in Japan. :-)
> On high-bandwidth, high-latency links (e.g., Tokyo to a server in
> NYC, which has well over 200 ms latency just due to the distance) TCP
> doesn't work so well unless both sides are very well tuned for high
> bandwidth-latency products. I'm generally on a 100 Mbps fibre connection
> in Tokyo (it's the standard home or small office connection here), and
> parallel downloads are a very happy thing; in some circumstances I can
> run a dozen downloads in parallel, without any individual one being
> slower than it would be running alone.
Presumably to different servers though right?
I was also under the impression that most web servers kind of frowned on
more than one or two connections from the same client and some would
take active measures to prevent it.
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