于 2014/3/19 15:11, alan.zhang 写道:
As the doc http://ceph.com/docs/master/rados/operations/placement-groups/
I get this formula:
(OSDs * 100)
Total PGs = ------------
This formula is recommended that pg nums assigned to each OSD controls
below 100.
Replicas
In my ceph cluster have 1 pool, 5 osds,2 replicas, so I have set
pg_num to 250.
one day , i ned to add a pool(2 pools), what number shoud i set the
pg_num?
if you have two pools,each pool may set pg_num=125,
another question, if i set the pg_num as 1024, it will be get slow
request?
yes,may be.
Thanks for help.
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