Hi,
Am 02.01.2014 17:10, schrieb Dietmar Maurer:
Having your journals on the same disk causes all data to be written twice, i.e.
once to the journal and once to the
osd store. Notice that your tested throughput is slightly more than half your
expected maximum...
But AFAIK OSD bench already considers journal writes. The disk can write about 100MB/s, so
55MB/s is already half speed!
So that does not explain the behavior for me.
Can you please post
iostat -x 5 (for about 30 seconds)
results of one host while doing osd bench and while doing client i/o?
Greets,
Stefan
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