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+.
-* libnuma-devel - library for handling NUMA (Non Uniform Memory Access).
+* Library for handling NUMA (Non Uniform Memory Access).
+
+ * numactl-devel in Red Hat/Fedora;
+
+ * libnuma-dev in Debian/Ubuntu;
+
+ .. note::
+
+ On systems with NUMA support, `libnuma-dev` (aka `numactl-devel`)
+ is a recommended dependency when `--legacy-mem` switch is used,
+ and a *required* dependency if default memory mode is used.
+ While DPDK will compile and run without `libnuma`
+ even on NUMA-enabled systems,
+ both usability and performance will be degraded.
* Python, version 2.7+ or 3.2+, to use various helper scripts included in the DPDK package.
uname -r
+.. note::
+
+ Kernel version 3.2 is no longer a kernel.org longterm stable kernel.
+ For DPDK 19.02 the minimum required kernel will be updated to
+ the current kernel.org oldest longterm stable supported kernel 3.16,
+ or recent versions of common distributions, notably RHEL/CentOS 7.
+
* glibc >= 2.7 (for features related to cpuset)
The version can be checked using the ``ldd --version`` command.
the number of hugepages reserved at boot time is generally divided equally between the two sockets
(on the assumption that sufficient memory is present on both sockets).
-See the Documentation/kernel-parameters.txt file in your Linux source tree for further details of these and other kernel options.
+See the Documentation/admin-guide/kernel-parameters.txt file in your Linux source tree for further details of these and other kernel options.
**Alternative:**
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
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^