archive: use zstd if available

the performance improvement is not as clear as with pigz, but it is still measurable difference. Signed-off-by: Giuseppe Scrivano <[email protected]>
containers · Jun 11, 2024 · 2fc8de5 · 2fc8de5
1 parent fd62e40
commit 2fc8de5
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pkg/archive/archive.go b/pkg/archive/archive.go
@@ -210,6 +210,9 @@ func DecompressStream(archive io.Reader) (io.ReadCloser, error) {
 		readBufWrapper := p.NewReadCloserWrapper(buf, xzReader)
 		return readBufWrapper, nil
 	case Zstd:
+		if rc, canUse := tryProcFilter([]string{"zstd", "-d"}, buf); canUse {
+			return p.NewReadCloserWrapper(buf, rc), nil
+		}
 		return zstdReader(buf)
 	default:
 		return nil, fmt.Errorf("unsupported compression format %s", (&compression).Extension())