hi Leon,
That does indeed look odd. The kstat is incremented *before* we send the
request, so it's hard to see how you can see it in a snoop, and not in
the nfsstat output.
What version of Solaris is the client running?
A dtrace script would indeed do it, too, of course. An FBT trace on e.g.
fbt::nfs3readdirplus:entry
fbt::nfs3readdir:entry
will catch the two types of READDIR.
If neither probe fires, that would indicate an error before the call is
even made, but then you wouldn't be seeing it in a snoop.
It would be interesting to know whether dtrace shows activity when
nfsstat doesn't.
fsstat(1M) is the other useful tool in this area, generally, but it
won't differentiate between the 2 NFSv3 procedures, and will only show
"rddir", as it operates at a much higher level (the vnode ops interface).
However, a simple "fsstat -F" would show you all rddir ops, split out by
NFS version, and that might be useful, as an extra data point, so please
try that too.
cheers,
c.
> It may be a FA Question... I am running a program that is doing a lot of
> readdir operations on an NFS-mounted directory. When I am running
> [b]snoop NFS-client NFS-server rpc nfs[/b], I see a lot of
> cl -> srv NFS C READDIRPLUS3
> srv -> cl NFS R READDIRPLUS3
> cl -> srv NFS C ACCESS3
> srv -> cl NFS R ACCESS3
> cl -> srv NFS C GETATTR3
> srv -> cl NFS R GETATTR3
> but when I am running
> [b]nfsstat -c[/b], I am getting 0% READDIRPLUS operations :
> null getattr setattr lookup access readlink
> 0 0% 634 34% 0 0% 3 0% 598 32% 0 0%
> read write create mkdir symlink mknod
> 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
> remove rmdir rename link readdir readdirplus
> 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
> fsstat fsinfo pathconf commit
> 0 0% 0 0% 0 0% 0 0%
>
> What am I doing wrong? Or there is a problem with nfsstat ?
> Is there a better way to see the percentage of NFS operations (dtrace script,
> for example) ?
>
> TIA,
> [i]-- leon[/i]
>
>
> This message posted from opensolaris.org
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--
Calum Mackay
Sun Microsystems Ltd. tel: +44 1252 420749
Minley Road, Blackwater mobile: +44 7711 115747
Camberley, GU17 9QG. ENGLAND email: calum.mackay at sun.com
