Wei Zhou commented on HDFS-11814:

I did some performance testing on EC IO performance with different EC schema 
and cell size, ISA-L library is used in the testing.
{{TestDFSIO}} used to test read/write performance, the following two parameters 
used for testing.
{{-nrFiles 1  -size 10GB}}

Overall execution time is used for comparison:


Cluster hardware configuration:
CPU: 2 Sockect, Xeon E5-2699 v3 @ 2.30GHz
Memory: 256GB
Storage: Seagate Momentus 7200.5 ST9750420AS, HDD, 7 disks per node
Network: 1000Mb/s
OS: CentOS 7.2


> Benchmark and tune for prefered default cell size
> -------------------------------------------------
>                 Key: HDFS-11814
>                 URL: https://issues.apache.org/jira/browse/HDFS-11814
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: SammiChen
>            Assignee: Wei Zhou
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: RS-Read.png, RS-Write.png
> Doing some benchmarking to see which cell size is more desirable, other than 
> current 64k

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