| From: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | david(at)pgmasters(dot)net |
| Cc: | tgl(at)sss(dot)pgh(dot)pa(dot)us, tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com, alvherre(at)alvh(dot)no-ip(dot)org, andres(at)anarazel(dot)de, robertmhaas(at)gmail(dot)com, michael(dot)paquier(at)gmail(dot)com, Jim(dot)Nasby(at)bluetreble(dot)com, craig(at)2ndquadrant(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Protect syscache from bloating with negative cache entries |
| Date: | 2018-03-23 08:01:11 |
| Message-ID: | 20180323.170111.162166546.horiguchi.kyotaro@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
Hello.
At Wed, 21 Mar 2018 15:28:07 -0400, David Steele <david(at)pgmasters(dot)net> wrote in <43095b16-14fc-e4d8-3310-2b86eaaab662(at)pgmasters(dot)net>
> On 3/15/18 1:12 AM, Kyotaro HORIGUCHI wrote:
> > At Mon, 12 Mar 2018 17:34:08 +0900 (Tokyo Standard Time), Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote in >
> > The attached is the patch set including this plancache stuff.
> >
> > 0001- catcache time-based expiration (The origin of this thread)
> > 0002- introduces dynahash pruning feature
> > 0003- implement relcache pruning using 0002
> > 0004- (perhaps) independent from the three above. PoC of
> > plancache pruning. Details are shown above.
>
> It looks like this should be marked Needs Review so I have done so. If
> that's not right please change it back or let me know and I will.
Mmm. I haven't noticed that. Thanks!
regards,
--
Kyotaro Horiguchi
NTT Open Source Software Center
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