Dear All,
I have a problem with slow writing when there are 10 million files.
(Top level directories are 2,500.)
I configured GlusterFS distributed cluster(3 nodes).
Each node's spec is below.
CPU: Xeon E5-2620 (2.00GHz 6 Core)
HDD: SATA 7200rpm 4TB*12 (RAID 6)
NW: 10GBEth
GlusterFS : glusterfs 3.4.2 built on Jan 3 2014 12:38:06
This cluster(volume) is mounted on CentOS via FUSE client.
This volume is storage of our application and I want to store 3 hundred million to 5 billion files.
I performed a writing test, writing 32KByte file × 10 million to this volume, and encountered a problem.
(1) Writing is so slow and slow down as number of files increases.
In non clustering situation(one node), this node's writing speed is 40 MByte/sec at random,
But writing speed is 3.6MByte/sec on that cluster.
(2) ls command is very slow.
About 20 second. Directory creation takes about 10 seconds at lowest.
Question:
1)5 Billion files are possible to store in GlusterFS?
Has someone succeeded to store billion files to GlusterFS?
2) Could you give me a link for a tuning guide or some information of tuning?
Thanks.
-- Michitaka Terada
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