Imported Upstream version 17.05

[deb_dpdk.git] / doc / guides / linux_gsg / sys_reqs.rst

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 3d74342..3a28c9e 100644 (file)
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -79,14 +79,12 @@ Compilation of the DPDK
 
     * glibc.ppc64, libgcc.ppc64, libstdc++.ppc64 and glibc-devel.ppc64 for IBM ppc_64;
 
-.. note::
-
-    x86_x32 ABI is currently supported with distribution packages only on Ubuntu
-    higher than 13.10 or recent Debian distribution. The only supported  compiler is gcc 4.9+.
+    .. note::
 
-.. note::
+       x86_x32 ABI is currently supported with distribution packages only on Ubuntu
+       higher than 13.10 or recent Debian distribution. The only supported  compiler is gcc 4.9+.
 
-    Python, version 2.6 or 2.7, to use various helper scripts included in the DPDK package.
+*   Python, version 2.7+ or 3.2+, to use various helper scripts included in the DPDK package.
 
 
 **Optional Tools:**
@@ -202,6 +200,12 @@ On a NUMA machine, pages should be allocated explicitly on separate nodes::
 
     For 1G pages, it is not possible to reserve the hugepage memory after the system has booted.
 
+    On IBM POWER system, the nr_overcommit_hugepages should be set to the same value as nr_hugepages.
+    For example, if the required page number is 128, the following commands are used::
+
+        echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_hugepages
+        echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_overcommit_hugepages
+
 Using Hugepages with the DPDK
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^