On Thu, 2008-03-27 at 17:01 -0400, Mark Seger wrote: > perhaps you haven't drunk the collectl kool-aid yet. 9-)
I have been reading the discussion about collectl, yes. > with collectl you can dynamically monitor lots of system resources in > real-time including lustre. here's an example on a system using GigE as > the interconnect but I could just have easily choses to show IB, memory > or a variety of other types of data. I could log it to a file and play > it back later or even convert it to a form suitable for plotting with > gnuplot. Yeah. I understand all of that. > my point is I want to see what lustre is doing (or at least thinks it's > doing). Is there a way to tell dymamically how many statfs calls it's > making? I guess I would have thought that the MDS would track something > like this. Hrm. I'm not following how this relates to your query about "a non-zero value for statfs". I was assuming you found a counter for statfs and didn't know what could trigger it being increased. That is what I was answering to. > Brian J. Murrell wrote: > > On Thu, 2008-03-27 at 14:23 -0400, Mark Seger wrote: > > > >> In > >> particular I'm looking at a non-zero value for statfs but no matter what > >> I do it doesn't change! > >> > > > > Not surprising. "man statfs". Not something I'd expect a lot of calls > > to from common userspace applications. (Untested but) Trying using > > "stat(1)" with the "-f" argument on your lustre mount point and see if > > that bumps up the counter. > > > > b. b.
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