Hi,
I am seeing a lot of lookup request when doing recursive mkdir.
The workload behavior is like:
mkdir DIR0
mkdir DIR0/DIR1
mkdir DIR0/DIR1/DIR2
....
mkdir DIR0/DIR1/DIR2......./DIR7
create DIR0/DIR1/DIR2......./DIR7/FILE1
and concurrently run on 50+ clients, the dir name in different
clients may or maynot be the same.
from the admin socket I was seeing ~50K create requests, but
got 400K lookup requests. The lookup eat up most of the mds capability
so file create is slow.
Where is the lookup comes from and can we have anyway to
optimize it out ?
Xiaoxi
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