Terrible NFS4 performance: FreeBSD 9.1 + UFS/ZFS + AWS EC2

[Berend de Boer]

>>>>> "Joshua" == Joshua Boyd <boydjd at jbip.net> writes:

    Joshua> Are you using EBS or ephemeral storage?

Both.


    Joshua> If you are using EBS, how many provisioned IOPS and how
    Joshua> many volumes are you using? In what configuration?

It doesn't matter a iota what you use. It's the NFS4 server in
FreeBSD. Not using any provisioned EBS.

Have tested against ephemeral zfs mirror, ebs root disk ufs, and
raidz2 zfs with 4 EBS disks.


    Joshua> What ec2 instance size are you using?

m1.large.


    Joshua> Are you running your tests against the NFS server from
    Joshua> within EC2, or from a host outside of EC2?

within same zone.

All these details are irrelevant. See my test nfs3 versus nfs4. We
have a factor 10 difference here. Any hardware/disk factor is
irrelevant here. It's the FreeBSD nfs4 implementation.

I wish I had the time to solve it, sounds like an interesting problem,
but a lot of work I'm afraid.

--
All the best,

Berend de Boer


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