3 ms·
As a former storage architect, I should point out that defaults are compromises and it is far more complicated as any benchmarking is. Btrfs extent trees, XFS
by nyrikki 3y ago
As a former storage architect, I should point out that defaults are compromises and it is far more complicated as any benchmarking is.
Btrfs extent trees, XFS stride, stripe sizes. Partition alignment, WAL block and segment sizes all need to be tuned. Obviously abstractions like LVM and VM volumes impact this.
Short stroking spinning WAL drives. Or only partial allocation of SSD space was often required when systems were close to capacity.
But ZFS data consistency has a cost. And extents on spinning discs has a cost also.
8k WAL blocks with 16m segment defaults with 4k native disk sectors would be a place to start with 7200/60 = 100 as an assumption.