[Lustre-devel] F/S stats visualisation

[Eric Barton]

Hi,

I've made some histograms that visualise the F/S stats people have
so kindly sent in.  There are a couple of surprises which seem to
do with how the filesystems were set up (e.g. huge #s of inodes
reserved but not used on OSTs) and used (different ratios of ops).

The attached PDF has a summary for each filesystem containing...

* Filesystem name

* Ratio of MDS 1K blocks to MDS inodes
  Ratio of OST 1K blocks to MDS inodes
  Ratio of OST inodes to MDS inodes

* Histogram of operation counts

* Histogram of blocks total (blue) and used (red) on the MDS
  and all OSTs

* Histogram of inodes total (blue) and used (red) on the MDS
  and all OSTs 

...hope you find it useful.

          Cheers,
                   Eric


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