Code review comment for lp:~sergei.glushchenko/percona-xtrabackup/20-decompress

> > - parallel decompression?
>
> I've experimented with parallel decompression, implementing it similar to
> parallel compression and it didn't gave me any performance gain. It was even
> slower than thread-per-file implementation. Do you have any specific proposals
> how to implement parallel decompression?

Thread per file is fine.