Hi Manuel,

My response is interleaved.

On 5/7/19 7:32 PM, EDH - Manuel Rios Fernandez wrote:
> Hi Eric,
> 
> This looks like something the software developer must do, not something than 
> Storage provider must allow no?

True -- so you're using `radosgw-admin bucket list --bucket=XYZ` to list
the bucket? Currently we do not allow for a "--allow-unordered" flag,
but there's no reason we could not. I'm working on the PR now, although
it might take some time before it gets to v13.

> Strange behavior is that sometimes bucket is list fast in less than 30 secs 
> and other time it timeout after 600 secs, the bucket contains 875 folders 
> with a total object number of 6Millions.
> 
> I don’t know how a simple list of 875 folder can timeout after 600 secs

Burkhard Linke's comment is on target. The "folders" are a trick using
delimiters. A bucket is really entirely flat without a hierarchy.

> We bought several NVMe Optane for do 4 partitions in each PCIe card and get 
> up 1.000.000 IOPS for Index. Quite expensive because we calc that our index 
> is just 4GB (100-200M objects),waiting those cards. Any more idea?

With respect to your earlier message in which you included the output of
`ceph df`, I believe the reason that default.rgw.buckets.index shows as
0 bytes used is that the index uses the metadata branch of the object to
store its data.

> Regards

Eric
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