zstd backup

Most of the benchmarks I've seen here have a much higher zstd de/compression speeds. I'm trying to understand why mine look so low. What are some areas to look at that could help my performance? Storage is USB 3.2 drive running xfs. Setup is pbs and pve running in place proxmox-backup-client...

I know I can use zstd: N and I have BWLIMIT: 49152 set in /etc/vzdump.conf, but I am not sure zstd takes bwlimit in consideration. the process executing the back shows ... cstream -t 50331648 | zstd --rsyncable '--threads=2' ... I need to lower the bandwidth bc it's straining the disk and...

Is it a good idea to enable compression zstd for both, backup and disk (zfs) ?

Hi a question about zstd backup. Why do zstd stop VM on backup start and resume for 1-3 seconds and other backups variants not? Is it normal? Or what is mean here? regards INFO: backup mode: snapshot INFO: ionice priority: 7 INFO: creating vzdump archive...