tree a03fe8944cff3682d9ec8688a374c620f45b0608
parent 267e91a0eafdbec39a0b0b68c2015dff982ae749
author Alexander Thomas <athom@google.com> 1548777248 +0000
committer Alexander Thomas <athom@google.com> 1548777248 +0000

[infra] Use fewer cores on Android shards

The shards are currently defaulting to use j4 because the docker host
has 4 cores. 6 devices share one host and are therefore trying to run 20
processes competing for the only 4 physical cores. The docker hosts will
soon be upgraded to have 8 cores. j2 will result in 10 processes
competing for those 8 cores which should result in a better balance
between utilization and latency.

Change-Id: Ieb67cb92f17317108d1a1d3da710c58400484a7c
Reviewed-on: https://dart-review.googlesource.com/c/91540
Reviewed-by: William Hesse <whesse@google.com>