Phoronix comparision of HAMMER, UFS, ZFS, EXT3, EXT4, Btrfs

Bruce Cran bruce at
Mon Jan 10 13:07:09 UTC 2011

On Mon, 10 Jan 2011 13:49:08 +0100
Ivan Voras <ivoras at> wrote:

> It depends - since ZFS is logging all the time it doesn't have to
> seek as much; if all transactions are WRITE and given sequentially,
> they will be written to the drive sequentially, even with full fsync
> semantics. But 75k IOPS is a bit too much :)

I've been doing some benchmarking using sysutils/fio recently. It seems
that for my desktop SATA disk (a Samsung F3) around 28-30k iops is about
the maximum, seen both on Windows 7 (NTFS) and FreeBSD (ZFS).
FreeBSD is much more bursty compared to Windows, getting 80k iops and
210MB/s for a few seconds followed by several of 0.

Bruce Cran

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