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From: Alexander Kuzmenkov <a.kuzmenkov@postgrespro.ru>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Michael Paquier <michael.paquier@gmail.com>
Cc: Heikki Linnakangas <hlinnaka@iki.fi>
Cc: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Alexander Korotkov <a.korotkov@postgrespro.ru>
Cc: Simon Riggs <simon@2ndquadrant.com>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Cc: Jeff Davis <pgsql@j-davis.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Greg Stark <stark@mit.edu>
Cc: Andres Freund <andres@2ndquadrant.com>
Cc: Rajeev rastogi <rajeev.rastogi@huawei.com>
Cc: Markus Wanner <markus@bluegap.ch>
Cc: Ants Aasma <ants@cybertec.at>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: obartunov <obartunov@postgrespro.ru>
Cc: Teodor Sigaev <teodor@postgrespro.ru>
Cc: Borodin Vladimir <root@simply.name>
Subject: Re: Proposal for CSN based snapshots
Date: Wed, 2 Aug 2017 15:00:27 +0300
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	<41bcb678-51ce-3529-402a-cbf3ee19dbd8@postgrespro.ru>
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> What problem exactly you are seeing in the clog, is it the contention
> around CLOGControlLock or generally accessing CLOG is slower.  If
> former, then we already have a patch [1] to address it.
It's the contention around CLogControlLock. Thank you for the pointer, 
next time I'll try it with the group clog update patch.


-- 
Alexander Kuzmenkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company



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  Cc: a.kuzmenkov@postgrespro.ru, amit.kapila16@gmail.com, michael.paquier@gmail.com, hlinnaka@iki.fi, andres@anarazel.de, robertmhaas@gmail.com, a.korotkov@postgrespro.ru, simon@2ndquadrant.com, dilipbalaut@gmail.com, pgsql@j-davis.com, alvherre@2ndquadrant.com, stark@mit.edu, andres@2ndquadrant.com, rajeev.rastogi@huawei.com, markus@bluegap.ch, ants@cybertec.at, bruce@momjian.us, obartunov@postgrespro.ru, teodor@postgrespro.ru, root@simply.name
  Subject: Re: Proposal for CSN based snapshots
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