Re: Performance results on inline data support

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On 09/30/2013 03:34 AM, Li Wang wrote:
Hi,
   We did a performance test on inline data support, the Ceph cluster is
composed of 1 MDS, 1 MON, 6 OSD on a HPC cluster. The program is simple,
there are 1000 - 3000 files with each being 1KB. The program repeated
the following processes on each file: open(), read(), close(). The total
time is measured with/without inline data support. The results are as
follows (seconds),

#files  without    with
1000    17.3674      8.7186
2000    35.4848      17.7646
3000    53.2164      26.4374

Excellent job! Looks like this could make a big difference for certain workloads. How much data can it store before it switches away from inlining the data?


Cheers,
Li Wang
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