Yeah, makes sense and sounds a good idea :) I’ve never thought about this, will think in
case of object store in our clusters.
Istvan Szabo
Senior Infrastructure Engineer
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On 2021. Mar 11., at 15:06, Loïc Dachary <loic(a)dachary.org> wrote:
Thanks for clarifying, I think I understand. The idea is that 1,000 ~4KB objects are
packed together in RBD which stores them in a single 4MB RADOS object. Does that answer
your question?
On 11/03/2021 08:22, Szabo, Istvan (Agoda) wrote:
Hi,
It relates to this sentence:
"The median object size is ~4KB, written in RBD images using the default 4MB[0]
object size. That will be ~100 millions RADOS objects instead of 100 billions."
Istvan Szabo
Senior Infrastructure Engineer
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Agoda Services Co., Ltd.
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-----Original Message-----
From: Loïc Dachary <loic(a)dachary.org>
Sent: Thursday, March 11, 2021 2:10 PM
To: Szabo, Istvan (Agoda) <Istvan.Szabo(a)agoda.com>
Cc: Ceph Users <ceph-users(a)ceph.io>
Subject: [ceph-users] Re: A practical approach to efficiently store 100 billions small
objects in Ceph
Email received from outside the company. If in doubt don't click links nor open
attachments!
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Hi,
On 11/03/2021 04:38, Szabo, Istvan (Agoda) wrote:
Does this mean that even in an object store the files which is smaller than 4MB will be
packed in one 4 MB object?
I'm not sure I understand the question. Would you be so kind as to rephrase it?
Cheers
-----Original Message-----
From: Loïc Dachary <loic(a)dachary.org>
Sent: Thursday, March 11, 2021 2:13 AM
To: Konstantin Shalygin <k0ste(a)k0ste.ru>
Cc: Ceph Users <ceph-users(a)ceph.io>io>; swh-devel(a)inria.fr
Subject: [ceph-users] Re: A practical approach to efficiently store 100 billions small
objects in Ceph
Email received from outside the company. If in doubt don't click links nor open
attachments!
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Hi Konstantin,
Thanks for the advice. Luckily objects are packed together and Ceph will only see larger
objects. The median object size is ~4KB, written in RBD images using the default 4MB[0]
object size. That will be ~100 millions RADOS objects instead of 100 billions.
Cheers
[0]
https://docs.ceph.com/en/latest/man/8/rbd/#cmdoption-rbd-object-size
On 10/03/2021 17:44, Konstantin Shalygin wrote:
Loic, please wait (or use shaman builds) for 14.2.17 cause for clusters with billions of
injects code was not optimal [1] at objects delete step
[1]
https://tracker.ceph.com/issues/47044 <https://tracker.ceph.com/issues/47044>
k
Sent from my iPhone
On 10 Mar 2021, at 17:55, Loïc Dachary <loic(a)dachary.org> wrote:
The next step will be to write and run benchmarks
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Loïc Dachary, Artisan Logiciel Libre
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