Re: Request for Info: bluestore_compression_mode?

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We are using pool level compression (aggressive) for our large EC tier.  Since we already had data in the pool when the feature was enabled I was unable to do in depth testing and tuning to get the best results.  "Low hanging fruit" put 654T Under compression with 327T used.  Not bad, but I know we could do better.

-paul

________________________________________
From: Mark Nelson <mnelson@xxxxxxxxxx>
Sent: Monday, August 8, 2022 2:30 PM
To: ceph-users@xxxxxxx
Subject:  Request for Info: bluestore_compression_mode?

Hi Folks,


We are trying to get a sense for how many people are using
bluestore_compression_mode or the per-pool compression_mode options
(these were introduced early in bluestore's life, but afaik may not
widely be used).  We might be able to reduce complexity in bluestore's
blob code if we could do compression in some other fashion, so we are
trying to get a sense of whether or not it's something worth looking
into more.


Thanks,

Mark

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