Re: WIP: WAL prefetch (another approach)

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От
Tomas Vondra
Тема
Re: WIP: WAL prefetch (another approach)
Дата
Msg-id
20200605223422.r76a5rpl2zg2xo34@development
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WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Alvaro Herrera <alvherre@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Alvaro Herrera <alvherre@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Andres Freund <andres@anarazel.de>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) David Steele <david@pgmasters.net>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Dmitry Dolgov <9erthalion6@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Dmitry Dolgov <9erthalion6@gmail.com>
Re: WIP: WAL prefetch (another approach) Dmitry Dolgov <9erthalion6@gmail.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Alvaro Herrera <alvherre@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@enterprisedb.com>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Andres Freund <andres@anarazel.de>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
RE: WIP: WAL prefetch (another approach) Jakub Wartak <Jakub.Wartak@tomtom.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
Re: WIP: WAL prefetch (another approach) Andres Freund <andres@anarazel.de>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@enterprisedb.com>
Re: WIP: WAL prefetch (another approach) Andres Freund <andres@anarazel.de>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@enterprisedb.com>
Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@enterprisedb.com>
Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@enterprisedb.com>
Re: WIP: WAL prefetch (another approach) Thomas Munro <thomas.munro@gmail.com>
RE: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Sait Talha Nisanci <Sait.Nisanci@microsoft.com>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
RE: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Sait Talha Nisanci <Sait.Nisanci@microsoft.com>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Andres Freund <andres@anarazel.de>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Robert Haas <robertmhaas@gmail.com>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Tomas Vondra <tomas.vondra@2ndquadrant.com>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Stephen Frost <sfrost@snowman.net>
RE: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Sait Talha Nisanci <Sait.Nisanci@microsoft.com>
Re: [EXTERNAL] Re: WIP: WAL prefetch (another approach) Robert Haas <robertmhaas@gmail.com>
Hi,

I wonder if we can collect some stats to measure how effective the
prefetching actually is. Ultimately we want something like cache hit
ratio, but we're only preloading into page cache, so we can't easily
measure that. Perhaps we could measure I/O timings in redo, though?


regards

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services 


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