if you have a look at /etc/collectl.conf you'll see where I try to keep a
search path to all the usual locations. However if you have it somewhere
else, just edit the path in there and you should be good to go:
PQuery =
/usr/sbin/perfquery:/usr/bin/perfquery:/usr/local/ofed/bin/perfquery
as far as nfs stats (and virtually all others as well), collectl is pretty
stupid. it just reads what the kernel tells it in /proc. I have seen many
times with some implementation of something is not doing the 'right thing'
in which case collectl either reports errors or maybe even no data at all.
As for nfs v4, I've been picking up the data from /proc/net/rpc/nfs which
is where it was last time I looked. Did someone move it? ;(
-mark
On Mon, Jun 11, 2012 at 1:51 PM, Ed Wahl <[email protected]> wrote:
> Howdy. New to Collectl and this list. Using it has been on my list for a
> while and I've finally made the time to get rolling.
>
> I'm using collectl-3.6.1-1.el5 on Centos 5.x from the epel repository. I
> was having issues gathering any data from NFS over Infiniband. Data was
> always zero. This was for a small cluster we recently picked up to manage
> for another entity and I had meant to move from v4 -> v3 for NFS anyway for
> other reasons. After the change it seems to work fine with NFS v3 so
> problem solved. Has anyone else seen this before? I don't have a ton of
> time, but I can probably build a new version and do some debugging if
> needed.
>
> In a similar vein:
> Anyone using collectl with NFS over rDMA? Does the version of NFS
> matter? (3|4)
>
> Is there any simple way to specify where 'perfquery' lives for IB
> sampling, other than creating a link to /usr/bin? I have not yet grabbed
> the source and looked. Figured I'd ask first. Does not seem to inherit
> PATH from my global settings on this cluster. Then again, it could be this
> cluster. This is one of those times where you just keep finding things the
> previous brand-new admin did when setting it up that you un-do or change.
>
> Ed Wahl
> OSC
>
>
>
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