doc: go1.12: clarify use of MADV_FREE
Fixes #29337
Change-Id: I1d632d19058c63dac8e25d2a5ad55555c1aec9d4
Reviewed-on: https://go-review.googlesource.com/c/155438
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/doc/go1.12.html b/doc/go1.12.html
index 1a0127d..527a7c7 100644
--- a/doc/go1.12.html
+++ b/doc/go1.12.html
@@ -314,10 +314,9 @@
</p>
<p><!-- CL 135395 -->
- On Linux, the Go runtime now releases memory back to the operating
- system only when the OS is under memory pressure. This is more
- efficient, but means a process's RSS (resident set size) won't
- decrease unless the OS is running out of memory.
+ On Linux, the runtime now uses MADV_FREE to release unused
+ memory. This is more efficient but may result in higher reported
+ RSS. The kernel will reclaim the unused data when it is needed.
</p>
<p><!-- CL 149578 -->
