5 a.m.
Are you running as root or rootless?
I have never touched WSL, Haven't touched a windows machine in 15 years. :^)
On 6/5/20 00:16, Dominic wrote:
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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