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Re: Deadline-Based Vacuum Delay - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Deadline-Based Vacuum Delay
Date
Msg-id 6980.1167318085@sss.pgh.pa.us
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In response to Deadline-Based Vacuum Delay  (Galy Lee <lee.galy@oss.ntt.co.jp>)
Responses Re: Deadline-Based Vacuum Delay  ("Jaime Casanova" <systemguards@gmail.com>)
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Galy Lee <lee.galy@oss.ntt.co.jp> writes:
> So I am thinking another way to perform vacuum. For example vacuum can
> be refined in a maintenance time frame like "VACUUM IN 6 HOURS", and
> then vacuum operation will be performed within the window. The delay
> time is adjusted internally to spread the disk I/O over the time frame.

And you will manage that how?  The total amount of work to be done is
quite unpredictable.
        regards, tom lane

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