path: root/doc/guides/rel_notes/release_18_11.rst
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@@ -69,6 +69,16 @@ New Features
checked out against that dma mask and rejected if out of range. If more than
one device has addressing limitations, the dma mask is the more restricted one.
+* **Updated the C11 memory model version of ring library.**
+ The latency is decreased for architectures using the C11 memory model
+ version of the ring library.
+ On Cavium ThunderX2 platform, the changes decreased latency by 27~29%
+ and 3~15% for MPMC and SPSC cases respectively (with 2 lcores). The
+ real improvements may vary with the number of contending lcores and
+ the size of ring.
* **Added hot-unplug handle mechanism.**
``rte_dev_hotplug_handle_enable`` and ``rte_dev_hotplug_handle_disable`` are