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Re: [Wget-dev] wget2 | Recursive downloads with HTTP/2 not uniformly div

From: Tim Rühsen
Subject: Re: [Wget-dev] wget2 | Recursive downloads with HTTP/2 not uniformly divided (#397)
Date: Fri, 21 Sep 2018 14:04:39 +0000

I forgot to mention that `--http2-request-window` might be of relevance for 
recursive downloads. Because parsing HTML/CSS/XML takes some time, depending on 
the CPU performance. Smaller values spread the parsing over more threads and 
thus (real and/or virtual) CPU cores. I guess slow CPUs with many cores/threads 
might gain some performance out of this. Again, HTTP/1 isn't affected here.

But finding the best *general* value is something we can come up with (the 
value 30 was just a guess without statistical data/evidence). So let's add a 
benchmark script for recursive downloads via HTTP/2 with different values, e.g. 
in steps of 5 or so. We all can then test with different ISPs and different 
bandwidths and compare our results. That might lead us to a better default 
value and maybe a wiki page with some recommendations. WDYT ?

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