11:16 p.m.
Thanks for the input, Dan. As I understand the output of the
buildah info command in my last email I am using overlay, or am I
missing something?
After more searching, I thought I was running into this WSL2
issue: https://github.com/microsoft/WSL/issues/4197
But, when I tried the build entirely from my home dir in Linux
(not touching /mnt at all) the performance was the same.
Any other ideas for things I can try?
Daniel Walsh <dwalsh(a)redhat.com> wrote:
Sounds like you are not using overlay driver, but maybe vfs?
On 6/4/20 00:25, Dominic wrote:
> Thanks for the suggestions Scott and James. I really appreciate
> it.
>
> I'm testing both with Ubuntu 18.04 downloaded from Microsoft and
> with Fedora 32 setup by using wsl --import on a Fedora container
> rootfs. Both distributions are exhibiting the same behavior. I
> have followed the instructions on the sysadmin blog on both as
> well.
>
> It may also be wroth noting that running containers with podman
> is also "slow", but that's harder to quantify. Minutes to do a
> copy with buildah tells me something is seriously wrong with my
> setup. With podman, starting a container and running commands
> inside are just really sluggish. The problems might be related.
>
> Below are the buildah info outputs from both distributions. The
> Fedora 32 one was running overlay out of the box. For the Ubuntu
> one I had to build fuse-overlayfs using the instructions on the
> readme and configure buildah/podman to use it. Performance wasn't
> noticeably different from the default vfs driver.
>
> Ubuntu 18.04
> {
> "host": {
> "CgroupVersion": "v1",
> "Distribution": {
> "distribution": "ubuntu",
> "version": "18.04"
> },
> "MemTotal": 53851373568,
> "MenFree": 52583653376,
> "OCIRuntime": "runc",
> "SwapFree": 13958643712,
> "SwapTotal": 13958643712,
> "arch": "amd64",
> "cpus": 12,
> "hostname": "User-1",
> "kernel": "4.19.104-microsoft-standard",
> "os": "linux",
> "rootless": true,
> "uptime": "1h 18m 58.71s (Approximately 0.04 days)"
> },
> "store": {
> "ContainerStore": {
> "number": 1
> },
> "GraphDriverName": "overlay",
> "GraphOptions": [
> "overlay.mount_program=/usr/bin/fuse-overlayfs"
> ],
> "GraphRoot":
"/home/user/.local/share/containers/storage",
> "GraphStatus": {
> "Backing Filesystem": "extfs",
> "Native Overlay Diff": "false",
> "Supports d_type": "true",
> "Using metacopy": "false"
> },
> "ImageStore": {
> "number": 1
> },
> "RunRoot": "/var/tmp/1000/containers"
> }
> }
>
> Fedora 32
> {
> "host": {
> "CgroupVersion": "v1",
> "Distribution": {
> "distribution": "fedora",
> "version": "32"
> },
> "MemTotal": 53851373568,
> "MenFree": 52536049664,
> "OCIRuntime": "runc",
> "SwapFree": 13958643712,
> "SwapTotal": 13958643712,
> "arch": "amd64",
> "cpus": 12,
> "hostname": "User-1",
> "kernel": "4.19.104-microsoft-standard",
> "os": "linux",
> "rootless": true,
> "uptime": "1h 19m 33.42s (Approximately 0.04 days)"
> },
> "store": {
> "ContainerStore": {
> "number": 2
> },
> "GraphDriverName": "overlay",
> "GraphOptions": [
> "overlay.mount_program=/usr/bin/fuse-overlayfs"
> ],
> "GraphRoot":
"/home/user/.local/share/containers/storage",
> "GraphStatus": {
> "Backing Filesystem": "extfs",
> "Native Overlay Diff": "false",
> "Supports d_type": "true",
> "Using metacopy": "false"
> },
> "ImageStore": {
> "number": 7
> },
> "RunRoot": "/var/tmp/1000/containers"
> }
> }
>
> Let me know if there's anything else I can try to debug this.
>
>
> Scott McCarty <smccarty(a)redhat.com> wrote:
>> James has a pretty darn good guess. Could you share the output
>> of the "buildah info" command? Also, are you using an Ubuntu
>> userspace on WSL? Note there can be things you need to do to
>> tune the WSL kernel, like this:
>>
>> https://www.redhat.com/sysadmin/podman-windows-wsl2
>>
>> Though, I wouldn't expect cgroups to affect buildah, as it's
>> using chroots so I don't "think" the cgroups should matter.
>>
>> On Wed, Jun 3, 2020 at 12:31 PM James Cassell
>> <fedoraproject(a)cyberpear.com> wrote:
>>
>>> On Wed, Jun 3, 2020, at 2:24 AM, Dominic wrote:
>>>> Hello,
>>>>
>>>> I've been using podman and buildah for a while on native Ubuntu
>>>> and it's been great. With the release of WSL2 I'm trying to
start
>>>> building containers on Windows, but I'm running into some
>>>> performance issues. Running something like: buildah copy
>>>> $container . /srv in my project root takes maybe a second or two
>>>> on native linux and minutes on my WSL2 system.
>>>>
>>>> Windows task manager doesn't show high resource utilization from
>>>> any particular process during this time. Any ideas on how I can
>>>> debug this?
>>>>
>>> My guess is it's not using overlay capable fs, but is instead using
VFS.
>>>
>>> V/r,
>>> James Cassell
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--
Thank you,
Dominic