[pgpool-hackers: 3945] Re: Proposal: Refactor configuration parameters

[Tatsuo Ishii]

And documentation patch...

> Bo Peng said:
>> However, pgpool doesn't support "%m" option (time stamp with milliseconds).
>> I would like to make pgpool support "%m" option. 
> 
> So I wrote a patch to implement "%m" of log_line_prefix. Below is the
> sample output when log_line_prefix is set to "'%m: %a pid %p: '". If
> there's no objection, I would like to commit this in master branch.
> 
> 2021-07-03 13:58:37.799: main pid 28135: LOG:  Backend status file /home/t-ishii/work/Pgpool-II/current/x/log/pgpool_status discarded
> 2021-07-03 13:58:37.799: main pid 28135: LOG:  health_check_stats_shared_memory_size: requested size: 12288
> 2021-07-03 13:58:37.799: main pid 28135: LOG:  memory cache initialized
> 2021-07-03 13:58:37.799: main pid 28135: DETAIL:  memcache blocks :64
> 2021-07-03 13:58:37.799: main pid 28135: LOG:  allocating (136588088) bytes of shared memory segment
> 2021-07-03 13:58:37.799: main pid 28135: LOG:  allocating shared memory segment of size: 136588088 
> 2021-07-03 13:58:37.891: main pid 28135: LOG:  health_check_stats_shared_memory_size: requested size: 12288
> 2021-07-03 13:58:37.891: main pid 28135: LOG:  health_check_stats_shared_memory_size: requested size: 12288
> 2021-07-03 13:58:37.891: main pid 28135: LOG:  memory cache initialized
> 2021-07-03 13:58:37.891: main pid 28135: DETAIL:  memcache blocks :64
> 2021-07-03 13:58:37.897: main pid 28135: LOG:  pool_discard_oid_maps: discarded memqcache oid maps
> 2021-07-03 13:58:37.904: main pid 28135: LOG:  Setting up socket for 127.0.0.1:11000
> 2021-07-03 13:58:37.910: main pid 28135: LOG:  find_primary_node_repeatedly: waiting for finding a primary node
> 2021-07-03 13:58:37.941: main pid 28135: LOG:  find_primary_node: primary node is 0
> 2021-07-03 13:58:37.941: main pid 28135: LOG:  find_primary_node: standby node is 1
> 2021-07-03 13:58:37.941: sr_check_worker pid 28175: LOG:  process started
> 2021-07-03 13:58:37.942: health_check pid 28176: LOG:  process started
> 2021-07-03 13:58:37.942: pcp_main pid 28174: LOG:  PCP process: 28174 started
> 2021-07-03 13:58:37.942: health_check pid 28177: LOG:  process started
> 2021-07-03 13:58:37.945: main pid 28135: LOG:  pgpool-II successfully started. version 4.3devel (tamahomeboshi)
> 2021-07-03 13:58:37.945: main pid 28135: LOG:  node status[0]: 1
> 2021-07-03 13:58:37.945: main pid 28135: LOG:  node status[1]: 2
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