#1152: fix doc to mention CLI command necessary to enable disk_io_cou…

…nters() on win
giampaolo · Jan 1, 2018 · a86c6f6 · a86c6f6
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commit a86c6f6
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diff --git a/docs/index.rst b/docs/index.rst
@@ -419,6 +419,8 @@ Disks
   numbers will always be increasing or remain the same, but never decrease.
   ``disk_io_counters.cache_clear()`` can be used to invalidate the *nowrap*
   cache.
+  On Windows it may be ncessary to issue ``diskperf -y`` command from cmd.exe
+  first in order to enable IO counters.
 
     >>> import psutil
     >>> psutil.disk_io_counters()