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Add MaxThreads options to set max threads #2241

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Add MaxThreads options to set max threads #2241

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9 changes: 9 additions & 0 deletions cmd/containerd-stargz-grpc/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import (
"os/exec"
"os/signal"
"path/filepath"
"runtime/debug"
"time"

snapshotsapi "github.com/containerd/containerd/api/services/snapshots/v1"
Expand Down Expand Up @@ -87,6 +88,9 @@ type snapshotterConfig struct {

// FuseManagerConfig is configuration for fusemanager
FuseManagerConfig `toml:"fuse_manager" json:"fuse_manager"`

// MaxThreads sets Go runtime thread limit. 0 keeps the default limit.
MaxThreads int `toml:"max_threads" json:"max_threads"`
}

type FuseManagerConfig struct {
Expand Down Expand Up @@ -131,6 +135,11 @@ func main() {
log.G(ctx).WithError(err).Fatalf("failed to unmarshal config file %q", *configPath)
}

if config.MaxThreads > 0 {
previous := debug.SetMaxThreads(config.MaxThreads)
log.G(ctx).Infof("set Go max threads to %d (previous %d)", config.MaxThreads, previous)
}

if err := service.Supported(*rootDir); err != nil {
log.G(ctx).WithError(err).Fatalf("snapshotter is not supported")
}
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