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

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

Accessing the field directly drops memory consumption of a simple
`podman run --rm busybox true` from 1245kB to 410kB.

[NO TESTS NEEDED]

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
2021-09-28 17:01:22 +02:00
parent 381ab48c25
commit 5d6ea90e75
8 changed files with 36 additions and 39 deletions
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2
libpod/oci_conmon_linux.go
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@ -1150,7 +1150,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
if ctr.config.NetMode.IsSlirp4netns() || rootless.IsRootless() {
if ctr.config.PostConfigureNetNS {
havePortMapping := len(ctr.Config().PortMappings) > 0
havePortMapping := len(ctr.config.PortMappings) > 0
if havePortMapping {
ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
if err != nil {