Disable Nagle

[aajtodd]

Disable nagle's algorithm on HTTP connector.

[waahm7]

I have done an initial benchmark run with current state of things:

With NO_DELAY:
download-30GiB-1x-ram.run.json with 125 concurrency:
Run:1 Secs:9.108783 Gb/s:28.291161
Run:2 Secs:6.520921 Gb/s:39.518654
Run:3 Secs:6.602142 Gb/s:39.032488
Run:4 Secs:3.359281 Gb/s:76.712259
Run:5 Secs:3.237221 Gb/s:79.604712
Run:6 Secs:3.324450 Gb/s:77.516001
Run:7 Secs:3.624865 Gb/s:71.091766
Run:8 Secs:7.736387 Gb/s:33.309870
Run:9 Secs:3.590431 Gb/s:71.773570
Run:10 Secs:3.597755 Gb/s:71.627454

Default:
download-30GiB-1x-ram.run.json with 125 concurrency:
Run:1 Secs:8.816590 Gb/s:29.228766
Run:2 Secs:7.552424 Gb/s:34.121235
Run:3 Secs:3.498080 Gb/s:73.668416
Run:4 Secs:3.480027 Gb/s:74.050578
Run:5 Secs:3.431864 Gb/s:75.089825
Run:6 Secs:3.438130 Gb/s:74.952954
Run:7 Secs:3.521958 Gb/s:73.168968
Run:8 Secs:3.375376 Gb/s:76.346469
Run:9 Secs:3.304250 Gb/s:77.989873
Run:10 Secs:4.530187 Gb/s:56.884632

Just sharing the numbers: we do see a slight improvement in some runs. This might be worth revisiting later.