runtime: relax TestMemoryLimit on darwin a bit more

Add 8MB more. Covers most of the failures watchflakes has seen.

Fixes #73136

Change-Id: I593c599a9519b8b31ed0f401d4157d27ac692587
Reviewed-on: https://go-review.googlesource.com/c/go/+/708617
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@google.com>

diff --git a/src/runtime/testdata/testprog/gc.go b/src/runtime/testdata/testprog/gc.go
index bbe1453401325f8efcca14951c11ad5eb3bbf367..32e2c5e1b49521de27277de7c938c949f00143e0 100644 (file)
--- a/src/runtime/testdata/testprog/gc.go
+++ b/src/runtime/testdata/testprog/gc.go
@@ -396,7 +396,7 @@ func gcMemoryLimit(gcPercent int) {
                // should do considerably better than this bound.
                bound := int64(myLimit + 16<<20)
                if runtime.GOOS == "darwin" {
-                       bound += 16 << 20 // Be more lax on Darwin, see issue 73136.
+                       bound += 24 << 20 // Be more lax on Darwin, see issue 73136.
                }
                start := time.Now()
                for time.Since(start) < 200*time.Millisecond {