Data loads seem much slower with Net Fetch #3105
Description
tl;dr
Unfortunately, we failed to notice before the merge of #3069 that those changes there are making data loads much slower For instance, a load that previously took 5 seconds on my Intel Macbook now takes 3+ minutes.
Details
Repro is with Zui commit cc740ad.
The first video shows how things were performing better at commit 64f50eb right before the changes in #3069 merged. Here I'm doing a Quick Load of the ZNG-format zed-sample-data. As it shows, the data load takes about 5 seconds.
64f50eb.mp4
The second video is at commit cc740ad which is associated with the changes in #3069 that has the app using Net Fetch. As it shows, the same data load is now taking 3+ minutes.