Re: Using ProcSignal to get memory context stats from a running backend

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От
Robert Haas
Тема
Re: Using ProcSignal to get memory context stats from a running backend
Дата
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CA+TgmoZL18gVSEz8jEFhkq8bQJtqUf24S6LBdrZ6Z4cDZx++gQ@mail.gmail.com
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Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
RE: Using ProcSignal to get memory context stats from a runningbackend "Tsunakawa, Takayuki" <tsunakawa.takay@jp.fujitsu.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Tom Lane <tgl@sss.pgh.pa.us>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Robert Haas <robertmhaas@gmail.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Robert Haas <robertmhaas@gmail.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Greg Stark <stark@mit.edu>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Robert Haas <robertmhaas@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Robert Haas <robertmhaas@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Tom Lane <tgl@sss.pgh.pa.us>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Tom Lane <tgl@sss.pgh.pa.us>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Andres Freund <andres@anarazel.de>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Alvaro Herrera <alvherre@alvh.no-ip.org>
Re: Using ProcSignal to get memory context stats from a running backend Pavel Stehule <pavel.stehule@gmail.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Maksim Milyutin <milyutinma@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Pavel Stehule <pavel.stehule@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Maksim Milyutin <milyutinma@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a runningbackend Maksim Milyutin <milyutinma@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
Re: Using ProcSignal to get memory context stats from a running backend Michael Paquier <michael.paquier@gmail.com>
Re: Using ProcSignal to get memory context stats from a running backend Craig Ringer <craig@2ndquadrant.com>
On Tue, Dec 12, 2017 at 1:50 PM, Andres Freund  wrote:
> I do wonder if the right thing here wouldn't be to put the result into a
> dsm segment, and then return that to the UDF on the requesting
> side. Logging to the server log and then have the requestor dig that out
> doesn't seem particularly user friendly.

I think that dumping it to the server log will be fine for most
people, and it's *significantly* safer.  Creating a DSM segment could
fail, and the last thing we want is for interrogating a long-running
backend to make it crap out.

+1 for this whole concept, just BTW.  As I've said before, I grow
weary of asking customers to run gdb.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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