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authorChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-04-19 14:28:47 +0200
committerChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-04-19 14:28:47 +0200
commit86addccae25e2ec4fb505ef05286e25a87c80fb5 (patch)
tree57c355a744eaaea2a1766b00d7e7dfcbb59fb774 /debian
parente771b3810e4dc12f371258e37a6a5244e326d247 (diff)
dpdk.conf: info about unwanted effects of multiple hugepage mountpoints
Change-Id: I83d6b19ceab5fdac544b149aff78183ef8a45ff6 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'debian')
-rw-r--r--debian/dpdk.conf8
1 files changed, 8 insertions, 0 deletions
diff --git a/debian/dpdk.conf b/debian/dpdk.conf
index a5aea865..272565c2 100644
--- a/debian/dpdk.conf
+++ b/debian/dpdk.conf
@@ -36,6 +36,14 @@
# script. In that case specific mountpoints can be provided as parameters to
# the DPDK library.
+# Also please be aware that multiple huge page sizes and their mountpoints
+# can confuse other programs as well. For example libvirt/qemu might pick one
+# of the paths created for DPDKs larger pages or any such.
+# It is recommended in these cases to consider configuring the respective
+# applications as well to not "guess" when picking a hugepage path.
+# In the libvirt/qemu case that would for example be the setting
+# hugetlbfs_mount in /etc/libvirt/qemu.conf
+
# Hardware may support other granularities of hugepages (like 4M). But the
# larger the hugepages the earlier those should be allocated.
# Note: the dpdk init scripts will report warnings, but not fail if they could