Re: Creating a function for exposing memory usage of backend process - Mailing list pgsql-hackers

From Fujii Masao
Subject Re: Creating a function for exposing memory usage of backend process
Date
Msg-id 134996df-82f1-31eb-feb6-5b8ddd8759fd@oss.nttdata.com
Whole thread Raw
In response to Re: Creating a function for exposing memory usage of backend process  (Fujii Masao <masao.fujii@oss.nttdata.com>)
Responses Re: Creating a function for exposing memory usage of backend process
List pgsql-hackers

On 2020/08/24 13:13, Fujii Masao wrote:
> 
> 
> On 2020/08/24 13:01, torikoshia wrote:
>> On 2020-08-22 21:18, Michael Paquier wrote:
>>
>> Thanks for reviewing!
>>
>>> On Fri, Aug 21, 2020 at 11:27:06PM +0900, torikoshia wrote:
>>>> OK. Added a regression test on sysviews.sql.
>>>> (0001-Added-a-regression-test-for-pg_backend_memory_contex.patch)
>>>>
>>>> Fujii-san gave us an example, but I added more simple one considering
>>>> the simplicity of other tests on that.
>>>
>>> What you have sent in 0001 looks fine to me.  A small test is much
>>> better than nothing.
> 
> +1
> 
> But as I proposed upthread, what about a bit complicated test as follows,
> e.g., to confirm that the internal logic for level works expectedly?
> 
>       SELECT name, ident, parent, level, total_bytes >= free_bytes FROM pg_backend_memory_contexts WHERE level = 0;
> 
> 
>>>
>>>> Added a patch for relocating the codes to mcxtfuncs.c.
>>>> (patches/0001-Rellocated-the-codes-for-pg_backend_memory_contexts-.patch)
> 
> Thanks for the patch! Looks good to me.
> Barring any objection, I will commit this patch at first.

As far as I know, utils/adt is the directory to basically include the files
for a particular type or operator. So ISTM that mcxtfuncs.c doesn't
fit to this directory. Isn't it better to put that in utils/mmgr ?


The copyright line in new file mcxtfuncs.c should be changed as follows
because it contains new code?

- * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
+ * Portions Copyright (c) 2020, PostgreSQL Global Development Group

Regards,

-- 
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION



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