Hello!
Is it possible? At the time I’m seeing 3.9% cpu use, only one core is used.
incus 6.12 here.
incus config show
config:
backups.compression_algorithm: zstd
core.https_address: :8443
storage.backups_volume: backuptemp/backups_tmp
Modern zstd should automatically use multi-threading from what I can tell in the manpage.
Well, I’m in Rocky 9.5, and zstd is version 1.5.7.
What I’m seeing in htop is the command zstd -c
The man page says that zstdmt command is equivalent to zstd -T0, but the default when using zstd is -T1, at least in this version.
From the man page:
-T#, --threads=#: Compress using # working threads (default: 1). If # is 0, attempt to detect and use the number of physical CPU cores. In all cases, the nb of threads is
capped to ZSTDMT_NBWORKERS_MAX, which is either 64 in 32-bit mode, or 256 for 64-bit environments. This modifier does nothing if zstd is compiled without multithread sup‐
port.