[ ... ]
> I have a 6-device test setup at home and I tried various setups
> and I think I got rather better than that.
* 'raid1' profile:
soft# btrfs fi df /mnt/sdb5
Data, RAID1: total=
>>> On Mon, 27 Feb 2017 22:11:29 +, p...@btrfs.list.sabi.co.uk (Peter
>>> Grandi) said:
> [ ... ]
>> I have a 6-device test setup at home and I tried various setups
>> and I think I got rather better than that.
[ ... ]
> That's a range of 700-1300 4KiB random mixed-rw IOPS,
Rerun with 1M b
On 2017-02-27 14:15, John Marrett wrote:
Liubo correctly identified direct IO as a solution for my test
performance issues, with it in use I achieved 908 read and 305 write,
not quite as fast as ZFS but more than adequate for my needs. I then
applied Peter's recommendation of switching to raid10
Liubo correctly identified direct IO as a solution for my test
performance issues, with it in use I achieved 908 read and 305 write,
not quite as fast as ZFS but more than adequate for my needs. I then
applied Peter's recommendation of switching to raid10 and tripled
performance again up to 3000 re
[ ... ]
> a ten disk raid1 using 7.2k 3 TB SAS drives
Those are really low IOPS-per-TB devices, but good choice for
SAS, as they will have SCT/ERC.
> and used aio to test IOOP rates. I was surprised to measure
> 215 read and 72 write IOOPs on the clean new filesystem.
For that you really want to
On Mon, Feb 27, 2017 at 08:20:49AM -0500, John Marrett wrote:
> In preparation for a system and storage upgrade I performed some btrfs
> performance tests. I created a ten disk raid1 using 7.2k 3 TB SAS
> drives and used aio to test IOOP rates. I was surprised to measure 215
> read and 72 write IOO
