I am trying to use docker with AWS sam, to test lambdas locally, but the containers are pretty slow to start.
On Ubuntu 18.04, it takes an average of 12 sec to run the hello world container:
time docker run hello-world
real 0m13.262s user 0m0.039s sys 0m0.027s
I find this a bit excesive, given that my PC is an i7 with 16GB of ram, and I am not running anything “big” on the background.
I apologise in advance for asking, but can I get some hint on how to get docker running faster?
Thanks in advance,
What I tried
I tried running the command with --network none option and it improves the situation a bit, but it still takes 7 seconds on average (still too long).
I found a post that mentioned that setting the local DNS config to google’s DNS helped, I tried that, but it did not make a difference.
I checked this post https://github.com/docker/for-linux/issues/247, but this seems to be an issue on SSD disks, and I am currently running from a magnetic disk.
Also, I tried downgrading the kernel of my ubuntu machine to 4.15.0 to see if the kernel version was causing trouble, but it had no effect.
Here is my docker version:
Client: Version: 18.09.6 API version: 1.39 Go version: go1.10.8 Git commit: 481bc77 Built: Sat May 4 02:35:57 2019 OS/Arch: linux/amd64 Experimental: false Server: Docker Engine - Community Engine: Version: 18.09.6 API version: 1.39 (minimum version 1.12) Go version: go1.10.8 Git commit: 481bc77 Built: Sat May 4 01:59:36 2019 OS/Arch: linux/amd64 Experimental: false
And docker info:
Containers: 37 Running: 0 Paused: 0 Stopped: 37 Images: 2 Server Version: 18.09.6 Storage Driver: overlay2 Backing Filesystem: extfs Supports d_type: true Native Overlay Diff: true Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: bb71b10fd8f58240ca47fbb579b9d1028eea7c84 runc version: 2b18fe1d885ee5083ef9f0838fee39b62d653e30 init version: fec3683 Security Options: apparmor seccomp Profile: default Kernel Version: 4.19.16-041916-generic Operating System: Ubuntu 18.04.2 LTS OSType: linux Architecture: x86_64 CPUs: 12 Total Memory: 15.37GiB Name: morningstar ID: CTWU:E32D:T4RO:MJ43:N3JQ:2XPL:HJHD:YYKI:JGHT:GTJD:FDJ2:D4N6 Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ Labels: Experimental: false Insecure Registries: 127.0.0.0/8 Live Restore Enabled: false Product License: Community Engine WARNING: No swap limit support
Also, my pc is a Dell G7 15 7588
CPU: 2.2-GHz Intel Core i7-8750H