well, it was already an NFS-discuss list message. Someone else added
dtrace-discuss to it. I have already noted this to a degree on zfs-discuss,
but it seems to be mainly a NFS specific issue at this stage.


On 5/5/06, Spencer Shepler <spencer.shepler at sun.com> wrote:
>
> On Fri, Joe Little wrote:
> > On 5/5/06, Spencer Shepler <spencer.shepler at sun.com> wrote:
> > >On Fri, Joe Little wrote:
> > >> Well, I used the dtrace script used here. The NFS implementation
> > >> (server) is Solaris 11 B38, and the client and the RHEL linux
> > >> revision, which doesn't have this problem going through other
> > >> SAN-based NAS (NetApp, EMC, etc.. even iSCSI). I previously setup a
> > >> Linux box as an iscsi initiator, XFS, and Linux's less than stellar
> > >> kNFS server revision, and did not see this interaction. Thus, if
> there
> > >> are any thread issues, its likely on Solaris' end or there is
> > >> particularly bad interaction with linux clients if and only if the
> > >> solaris backend is iSCSI. That latter doesn't make sense.
> > >
> > >It is a server response time issue as you have demonstrated with data.
> > >The server in the NFS/ZFS/iSCSI path is not responding as quickly
> > >as other combinations and for this particular application, the overall
> > >throughput is subpar.
> > >
> > >Focusing on the disparity found to understand why the NFS/ZFS/iSCSI
> > >combo is not working well seems like the correct path.
> > >
> >
> > That's where I'm at a loss. Has the NFS/ZFS/iSCSI path been tested by
> > Sun at all?
>
> I don't know and this seems like a good point to move the
> discussion to zfs-discuss and nfs-discuss to see if there
> is additional input.
>
> Spencer
>
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