testing: document -race goroutine limits

-race sets a hard cap of 8,192, which is easily hit while testing.

Fixes #23611

Change-Id: I0f720ec39c82c2194a485d437d6373f4bdc8a9c1
Reviewed-on: https://go-review.googlesource.com/103160
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Eric Lagergren 2018-03-28 18:09:17 -07:00 committed by Rob Pike
parent cc936d12bd
commit 4907c62f99

View file

@ -178,6 +178,9 @@
// }
// }
//
// The race detector kills the program if it exceeds 8192 concurrent goroutines,
// so use care when running parallel tests with the -race flag set.
//
// Run does not return until parallel subtests have completed, providing a way
// to clean up after a group of parallel tests:
//