zstd

• zstd -> Zstandard
• compression level
  • 1-22
  • -1 最快
  • 0 = 默认 3
  • --ultra - levels >= 20
    • 需要更多内存
  • https://github.com/facebook/zstd/blob/dev/lib/compress/clevels.h
• .zst

tar -I zstd --exclude='.DS_Store' -cvf pgsql.tar.zst pgsql
# 压缩级别
tar -I 'zstd -10' --exclude='.DS_Store' -cvf pgsql.tar.zst pgsql