| From: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
|---|---|
| To: | rajiv(dot)mca08(at)gmail(dot)com, pgsql-bugs <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #16314: Database Cache Hit Ratio (Warning) |
| Date: | 2020-03-24 15:44:10 |
| Message-ID: | CAMkU=1yVoNOHZ2pwTo7H0VL9Yc1fi81ik9EEk_SzEW+kwp+TsQ@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Tue, Mar 24, 2020 at 8:06 AM PG Bug reporting form <
noreply(at)postgresql(dot)org> wrote:
> The following bug has been logged on the website:
>
> Bug reference: 16314
> Logged by: Rajiv Ranjan
> Email address: rajiv(dot)mca08(at)gmail(dot)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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