systemd: set Limit* to infinity

There is a not-insignificant performance overhead for all containers (if containerd is a child of Docker, which is the current setup) if systemd sets rlimits on the main Docker daemon process (because the limits propogate to all children). Signed-off-by: Sebastiaan van Stijn <[email protected]>
moby · Aug 31, 2018 · 80039b4 · 80039b4
1 parent ef9ee10
commit 80039b4
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/contrib/init/systemd/docker.service b/contrib/init/systemd/docker.service
@@ -17,6 +17,10 @@ Restart=always
 # /opt/containerd/bin is in front so dockerd grabs the correct runc binary
 Environment="PATH=/opt/containerd/bin:/sbin:/usr/bin:/usr/local/bin:$PATH"
 
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNOFILE=infinity
+LimitNPROC=infinity
 LimitCORE=infinity
 
 [Install]