I have read the SK‘s performance tuning work too, it's a good job especially the analysis of write/read latancy on OSD.
I want to ask a question about the optimize on 'Long logging time', what's the meaning about 'split logging into another thread and do it later', AFAIK, ceph does logging async by logging thread.
Can you share more info?
2016-04-13 18:11 GMT+08:00 Alexandre DERUMIER <aderumier@xxxxxxxxx>:
>>Based on discussion with them at Ceph day in Tokyo JP, they have their own frozen the Ceph repository.
>>And they've been optimizing codes by their own team to meet their requirements.
>>AFAICT they had not done any do PR.
Thanks for the info
@cc bspark8.sk.com : maybe can you give us more informations ?
----- Mail original -----
De: "Shinobu Kinjo" <skinjo@xxxxxxxxxx>
À: "aderumier" <aderumier@xxxxxxxxx>
Cc: "Patrick McGarry" <pmcgarry@xxxxxxxxxx>, "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx>, "ceph-users" <ceph-users@xxxxxxxx>
Envoyé: Mercredi 13 Avril 2016 05:56:01
Objet: Re: Ceph Day Sunnyvale Presentations
Alexandre,
Based on discussion with them at Ceph day in Tokyo JP, they have their own frozen the Ceph repository.
And they've been optimizing codes by their own team to meet their requirements.
AFAICT they had not done any do PR.
Cheers,
Shinobu
----- Original Message -----
From: "Alexandre DERUMIER" <aderumier@xxxxxxxxx>
To: "Patrick McGarry" <pmcgarry@xxxxxxxxxx>
Cc: "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx>, "ceph-users" <ceph-users@xxxxxxxx>
Sent: Wednesday, April 13, 2016 12:45:31 PM
Subject: Re: Ceph Day Sunnyvale Presentations
Hi,
I was reading this presentation from SK telecom about flash optimisations
AFCeph: Ceph Performance Analysis & Improvement on Flash [Slides]
http://fr.slideshare.net/Inktank_Ceph/af-ceph-ceph-performance-analysis-and-improvement-on-flash
Byung-Su Park, SK Telecom
They seem to have made optimisations in ceph code. Is there any patches reference ? (applied to infernalis/jewel ?)
They seem also to have done ceph config tuning and system tunning, but no config details is provided :(
It could be great to share with the community :)
Regards,
Alexandre
----- Mail original -----
De: "Patrick McGarry" <pmcgarry@xxxxxxxxxx>
À: "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx>, "ceph-users" <ceph-users@xxxxxxxx>
Envoyé: Mercredi 6 Avril 2016 18:18:28
Objet: Ceph Day Sunnyvale Presentations
Hey cephers,
I have all but one of the presentations from Ceph Day Sunnyvale, so
rather than wait for a full hand I went ahead and posted the link to
the slides on the event page:
http://ceph.com/cephdays/ceph-day-sunnyvale/
The videos probably wont be processed until after next week, but I’ll
add those once we get them. Thanks to all of the presenters and
attendees that made this another great event.
--
Best Regards,
Patrick McGarry
Director Ceph Community || Red Hat
http://ceph.com || http://community.redhat.com
@scuttlemonkey || @ceph
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