Improve performance by increase recv size on service socket

[raubitsj]

Description

We were reading in very small chunks... This change prefers reading in 128kB size chunks.

Testing

See #4119 for testing notes

[vanpelt]

😎

[vanpelt]

Curious what the rational for the change is. Is the only downside for larger buffer sizes more memory consumption or am I missing something?

[raubitsj]

Curious what the rational for the change is. Is the only downside for larger buffer sizes more memory consumption or am I missing something?

I did some micro benchmarks and i saw no improvement so i was going to go a bit more conservative. I think larger should be better, but marginally now that the underlying buffer management was fixed in the sender and receiver.
After some more tests I might bump it up to 128k, but that is arbitrary also.

[codecov]

Codecov Report

Merging #4122 (2640b77) into master (efc85b7) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4122      +/-   ##
==========================================
+ Coverage   82.72%   82.76%   +0.04%     
==========================================
  Files         256      256              
  Lines       32568    32576       +8     
==========================================
+ Hits        26941    26961      +20     
+ Misses       5627     5615      -12     

Flag	Coverage Δ
functest	55.07% <100.00%> (+0.02%)	⬆️
unittest	73.56% <88.88%> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
wandb/sdk/lib/sock_client.py	92.59% <100.00%> (+0.32%)	⬆️
wandb/agents/pyagent.py	70.91% <0.00%> (-1.60%)	⬇️
wandb/sdk/interface/artifacts.py	78.89% <0.00%> (-0.35%)	⬇️
wandb/sdk/lib/git.py	79.01% <0.00%> (ø)
wandb/cli/cli.py	69.01% <0.00%> (+0.09%)	⬆️
wandb/sdk/wandb_run.py	91.18% <0.00%> (+0.24%)	⬆️
wandb/sdk/wandb_setup.py	89.00% <0.00%> (+0.50%)	⬆️
wandb/sdk/internal/internal_api.py	87.01% <0.00%> (+0.51%)	⬆️
wandb/integration/tensorboard/monkeypatch.py	92.59% <0.00%> (+2.46%)	⬆️
wandb/sdk/internal/meta.py	90.79% <0.00%> (+3.06%)	⬆️