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libpod: do not call (*container).Spec()

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Access the container's spec field directly inside of libpod instead of
calling Spec() which in turn creates expensive JSON deep copies.

Accessing the field directly drops memory consumption of a simple
podman run --rm busybox true from ~700kB to ~600kB.

[NO TESTS NEEDED]

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
2021-09-29 10:58:27 +02:00
parent 453c49c488
commit 98176f0018
3 changed files with 4 additions and 4 deletions
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2
libpod/kube.go
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@ -424,7 +424,7 @@ func containerToV1Container(ctx context.Context, c *Container) (v1.Container, []
// NOTE: a privileged container mounts all of /dev/*.
if !c.Privileged() && len(c.config.Spec.Linux.Devices) > 0 {
// TODO Enable when we can support devices and their names
kubeContainer.VolumeDevices = generateKubeVolumeDeviceFromLinuxDevice(c.Spec().Linux.Devices)
kubeContainer.VolumeDevices = generateKubeVolumeDeviceFromLinuxDevice(c.config.Spec.Linux.Devices)
return kubeContainer, kubeVolumes, nil, errors.Wrapf(define.ErrNotImplemented, "linux devices")
}