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RE: Protect syscache from bloating with negative cache entries - Mailing list pgsql-hackers

From Tsunakawa, Takayuki
Subject RE: Protect syscache from bloating with negative cache entries
Date
Msg-id 0A3221C70F24FB45833433255569204D1FB6C78A@G01JPEXMBYT05
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In response to Re: Protect syscache from bloating with negative cache entries  (Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>)
Responses Re: Protect syscache from bloating with negative cache entries  (Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>)
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From: Kyotaro HORIGUCHI [mailto:horiguchi.kyotaro@lab.ntt.co.jp]
> 0003: Remote GUC setting
> 
> It is independent from the above two, and heavily arguable.
> 
> pg_set_backend_config(pid, name, value) changes the GUC <name> on the
> backend with <pid> to <value>.
> 

Not having looked at the code yet, why did you think this is necessary?  Can't we always collect the cache stats?  Is
itheavy due to some locking in the shared memory, or sending the stats to the stats collector?
 


Regards
Takayuki Tsunakawa

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