Currently it is 4KB, but we will implement it as a tunable parameter.
Cheers,
Li Wang
On 09/30/2013 08:39 PM, Mark Nelson wrote:
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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