On 16/02/2015 10:04, Chris Murphy wrote:
This is a recent benchmarking using Postmark which supposedly
simulates mail servers. XFS stacks up a bit better than ext4.
http://www.phoronix.com/scan.php?page=article&item=linux-3.19-ssd-fs&num=3
A neat trick for big busy mail servers that comes up on linux-raid@
and the XFS list from time to time, is using md linear/concat to put
together the physical drives into a single logical block device, and
then format it XFS. XFS will create multiple AG's across all of those
devices, and do parallel writes across all of them. It's often quite a
bit better performing than raid0 specifically because of the many
thousands of small files in many directories workload.
Hey Chris,
I am unsure I understand what you wrote.
"XFS will create multiple AG's across all of those
devices,"
Are you comparing md linear/concat to md raid0? and that the upper level
XFS will run on top them?
(Just to make sure I understood what you have written.)
Eliezer
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