Additional note: I run these on servers that are not very tall but are pretty wide: 40 1.8GHz cores or so. So multi-threaded decompression really helps. I was

Additional note: I run these on servers that are not very tall but are pretty wide: 40 1.8GHz cores or so. So multi-threaded decompression really helps. I was using xz before, which doesn't support threaded decompression (according tom man page), decided to switch to zstd rather than pixz.