test: attempt at making a test more robust

A current theory is that this test is too fast for the
time resolution on the VMs where our builders run.

R=rsc
CC=golang-dev
https://golang.org/cl/5581056

diff --git a/test/map.go b/test/map.go
index 821f02ee0a0eb81d21fd1ecf6a1d7222a9b265b1..a92586ff4aeedfd08614e5677f3b6c06421ea762 100644 (file)
--- a/test/map.go
+++ b/test/map.go
@@ -667,7 +667,7 @@ func testnan() {
                return time.Since(t0)
        }
 
-       n := 30000 // 0.02 seconds on a MacBook Air
+       n := 60000 // 0.04 seconds on a MacBook Air
        t1 := t(n)
        t2 := t(2 * n)
        if t2 > 3*t1 { // should be 2x (linear); allow up to 3x