Re: Protect syscache from bloating with negative cache entries

From: Andres Freund <andres(at)anarazel(dot)de>
To: Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>
Cc: robertmhaas(at)gmail(dot)com, hlinnaka(at)iki(dot)fi, ideriha(dot)takeshi(at)jp(dot)fujitsu(dot)com, tomas(dot)vondra(at)2ndquadrant(dot)com, tgl(at)sss(dot)pgh(dot)pa(dot)us, tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com, alvherre(at)2ndquadrant(dot)com, bruce(at)momjian(dot)us, pgsql-hackers(at)lists(dot)postgresql(dot)org, michael(dot)paquier(at)gmail(dot)com, david(at)pgmasters(dot)net, craig(at)2ndquadrant(dot)com
Subject: Re: Protect syscache from bloating with negative cache entries
Date: 2020-11-19 05:42:02
Message-ID: 20201119054202.7fuulo6jnjkk7lne@alap3.anarazel.de
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Hi,

On 2020-11-19 14:25:36 +0900, Kyotaro Horiguchi wrote:
> # Creation, searching and expiration
> master : 6393.23 (100.0)
> patched-off: 6527.94 (102.1)
> patched-on : 15880.01 (248.4)

What's the deal with this massive increase here?

Greetings,

Andres Freund

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