Time the CPU tests on Jenkins. (#6257)

* Time the CPU tests on Jenkins. * Reduce thread contention. * Add doc. * Skip heavy tests on ARM.
2020-10-20 17:19:07 -07:00
parent d1254808d5
commit 81c37c28d5
9 changed files with 29 additions and 18 deletions
@@ -38,7 +38,8 @@ General Parameters

 * ``nthread`` [default to maximum number of threads available if not set]

-  - Number of parallel threads used to run XGBoost
+  - Number of parallel threads used to run XGBoost.  When choosing it, please keep thread
+    contention and hyperthreading in mind.

 * ``disable_default_eval_metric`` [default=``false``]