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On Monday, January 05, 2015 21:21:25 Stan Hoeppner wrote: > > > I didn't test however how it compares to default settings on the > > same drive which would set it to 512 B. > > As long as your underlying partition is 4KB aligned the only advantage > you'll likely see with 4B sectsz is a little faster log IO. So for non > metadata heavy workloads you won't see any difference between 512B and > 4KB sectsz. > > Stan
It's actually created by gparted with 1 MB alignment, so it's implicitly 4 KB aligned as well. I guess something else is causing the slowness or it's just subjective. Raw I/O performance test looks normal with hdparm.
Here is what gdisk reports (third partition is the XFS one):
Found valid GPT with protective MBR; using GPT. Disk /dev/sda: 3907029168 sectors, 1.8 TiB Logical sector size: 512 bytes Disk identifier (GUID): ... Partition table holds up to 128 entries First usable sector is 34, last usable sector is 3907029134 Partitions will be aligned on 2048-sector boundaries Total free space is 4205 sectors (2.1 MiB)
Number Start (sector) End (sector) Size Code Name 1 2048 534527 260.0 MiB EF00 2 534528 1763327 600.0 MiB 0700 3 1763328 3904931839 1.8 TiB 0700 4 3904931840 3907026943 1023.0 MiB 8200
Regards, Hillel.
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