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libcontainer/cgroups/fs: fix OCI runtime pause failed #4388

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libcontainer/cgroups/fs: fix OCI runtime pause failed #4388

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9 changes: 9 additions & 0 deletions libcontainer/cgroups/fs/freezer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ func (s *FreezerGroup) Set(path string, r *configs.Resources) (Err error) {
// Alas, this is still a game of chances, since the real fix
// belong to the kernel (cgroup v2 do not have this bug).

var d time.Duration = 1
for i := 0; i < 1000; i++ {
if i%50 == 49 {
// Occasional thaw and sleep improves
Expand All @@ -79,6 +80,14 @@ func (s *FreezerGroup) Set(path string, r *configs.Resources) (Err error) {
// system.
time.Sleep(10 * time.Microsecond)
}

if i%200 == 199 {
// should sleep a longer time for
// some really very slow machine.
time.Sleep(d * time.Second)
d <<= 1
}

state, err := cgroups.ReadFile(path, "freezer.state")
if err != nil {
return err
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