Re: BUG #16314: Database Cache Hit Ratio (Warning)

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От Jeff Janes
Тема Re: BUG #16314: Database Cache Hit Ratio (Warning)
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Msg-id CAMkU=1yVoNOHZ2pwTo7H0VL9Yc1fi81ik9EEk_SzEW+kwp+TsQ@mail.gmail.com
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Ответ на BUG #16314: Database Cache Hit Ratio (Warning)  (PG Bug reporting form <noreply@postgresql.org>)
Ответы Re: BUG #16314: Database Cache Hit Ratio (Warning)  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
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On Tue, Mar 24, 2020 at 8:06 AM PG Bug reporting form <noreply@postgresql.org> wrote:
The following bug has been logged on the website:

Bug reference:      16314
Logged by:          Rajiv Ranjan
Email address:      rajiv.mca08@gmail.com
PostgreSQL version: 9.6.0
Operating system:   Red Hat Enterprise Linux Server release 7.6 (Maip)
Description:       

Hi,

Currently, we are receiving a warning "Database Cache Hit Ratio
(%)(Warning)" from one of the monitoring tools.

This is not a bug in PostgreSQL.  It is arguably a bug in your unnamed monitoring tool.

It is a dumb warning. The disk is there to be read from--doing so is not inherently a problem. Ignore the warning or disable it.

Are the queries you care about too slow because data is occasionally read from disk?

Cheers,

Jeff

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