Re: [RGW] how to choise the best placement groups ?

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Would http://ceph.com/pgcalc/ help?

On Mon, Jul 18, 2016 at 01:27:38PM +0700, Khang Nguyễn Nhật wrote:
> Hi all,
> I have a cluster consists of: 3 Monitors, 1 RGW, 1 host of 24 OSDs(2TB/OSD) and
> some pool as: 
>     ap-southeast.rgw.data.root
>     ap-southeast.rgw.control
>     ap-southeast.rgw.gc
>     ap-southeast.rgw.log
>     ap-southeast.rgw.intent-log
>     ap-southeast.rgw.usage
>     ap-southeast.rgw.users.keys
>     ap-southeast.rgw.users.email
>     ap-southeast.rgw.users.swift
>     ap-southeast.rgw.users.uid
>     ap-southeast.rgw.buckets.index
>     ap-southeast.rgw.buckets.data
>     ap-southeast.rgw.buckets.non-ec
>     ap-southeast.rgw.meta
> In which "ap-southeast.rgw.buckets.data" is a erasure pool(k=20, m=4) and all
> of the remaining pool are replicated(size=3). I've used (100*OSDs)/size  to
> calculate the number of PGs, e.g. 100*24/3 = 800(nearest power of 2: 1024) for
> replicated pools and 100*24/24=100(nearest power of 2: 128) for erasure pool.
> I'm not sure this is the best placement group number, someone can give me some
> advice ?
> Thank !
> SECURITY NOTE: file ~/.netrc must not be accessible by others

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-- 
Thanks,
Chengwei

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