[pve-devel] ceph firefly in pve repos

[Dietmar Maurer]

The interesting thing is that write speed degrades if I do a long run (15 minutes):

# rados bench -p test3 900 write
     0       0         0         0         0         0         -         0
     1      16       184       168   671.851       672  0.061917 0.0903528
     2      16       377       361   721.883       772  0.058924 0.0869117
     3      16       575       559   745.227       792  0.107722 0.0844572
 ...
900      15     51501     51486   228.795       232  0.280925  0.279647
Total time run:         900.846099
Total writes made:      51501
Write size:             4194304
Bandwidth (MB/sec):     228.678 

Stddev Bandwidth:       83.0067
Max bandwidth (MB/sec): 632
Min bandwidth (MB/sec): 0
Average Latency:        0.279843
Stddev Latency:         0.277617
Max latency:            3.81218
Min latency:            0.034482

I guess this is what Stefan is talking about?