At Thu, 19 Nov 2020 15:23:05 +0900 (JST), Kyotaro Horiguchi <horikyota.ntt@gmail.com> wrote in
> At Wed, 18 Nov 2020 21:42:02 -0800, Andres Freund <andres@anarazel.de> wrote in
> > 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?
>
> CatCacheRemovedCTup(). If I replaced a call to the function in the
> cleanup functoin with dlist_delete(), the result changes as:
>
> master : 6372.04 (100.0) (2)
> patched-off : 6464.97 (101.5) (2)
> patched-on : 5354.42 ( 84.0) (2)
>
> We could boost the expiration if we reuse the "deleted" entry at the
> next entry creation.
That result should be bogus. It forgot to update cc_ntup..
regards.
--
Kyotaro Horiguchi
NTT Open Source Software Center
