mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-22 01:51:26 +00:00
Code Issues Releases Wiki Activity

dpdk: Use --in-memory by default.

Browse Source 
If anonymous memory mapping is supported by the kernel, it's better
to run OVS entirely in memory rather than creating shared data
structures. OVS doesn't work in multi-process mode, so there is no need
to litter a filesystem.

Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1949849
Acked-by: David Marchand <david.marchand@redhat.com>
Acked-by: Ian Stokes <ian.stokes@intel.com>
Signed-off-by: Rosemarie O'Riorden <roriorde@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Rosemarie O'Riorden 2021-08-06 08:44:32 -04:00 committed by Ilya Maximets
parent b5d2dbdbb5
commit 269b927fd7
3 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
NEWS
View File

@ -8,6 +8,7 @@ Post-v2.16.0
by default. 'other_config:dpdk-socket-limit' can be set equal to
the 'other_config:dpdk-socket-mem' to preserve the legacy memory
limiting behavior.
* EAL argument --in-memory is applied by default if supported.
* Add hardware offload support for matching IPv4/IPv6 frag types
(experimental).
* Add support for DPDK 21.11.

6
acinclude.m4
View File

@ -472,6 +472,12 @@ AC_DEFUN([OVS_CHECK_DPDK], [
], [[#include <rte_config.h>]])
], [], [[#include <rte_config.h>]])
AC_CHECK_DECL([MAP_HUGE_SHIFT], [
AC_DEFINE([DPDK_IN_MEMORY_SUPPORTED], [1], [If MAP_HUGE_SHIFT is
defined, anonymous memory mapping is supported by the
kernel, and --in-memory can be used.])
], [], [[#include <sys/mman.h>]])
# DPDK uses dlopen to load plugins.
OVS_FIND_DEPENDENCY([dlopen], [dl], [libdl])

7
lib/dpdk.c
View File

@ -405,6 +405,13 @@ dpdk_init__(const struct smap *ovs_other_config)
svec_add(&args, ovs_get_program_name());
construct_dpdk_args(ovs_other_config, &args);
#ifdef DPDK_IN_MEMORY_SUPPORTED
if (!args_contains(&args, "--in-memory") &&
!args_contains(&args, "--legacy-mem")) {
svec_add(&args, "--in-memory");
}
#endif
if (args_contains(&args, "-c") || args_contains(&args, "-l")) {
auto_determine = false;
}