| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | jian xu <jamesxu(at)outlook(dot)com> |
| Cc: | MichaelDBA <MichaelDBA(at)sqlexec(dot)com>, Scott Ribe <scott_ribe(at)elevated-dev(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: checkpoint process use too much memory |
| Date: | 2020-07-20 22:34:25 |
| Message-ID: | 736811.1595284465@sss.pgh.pa.us |
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| Lists: | pgsql-admin |
jian xu <jamesxu(at)outlook(dot)com> writes:
> we are seeing this issue again, the checkpoint process is eating up all the memory,
> based on the htop, the checkpointer process has
> VIRT: 103G
> RES: 103G
> SHR: 4099M
hmmm ...
> my pg version is 10.3 ,
Really the *first* thing you ought to do is update to current (10.13)
and see if the problem is still there. But if it is, maybe collecting
a memory context map in that process would be informative:
https://wiki.postgresql.org/wiki/Developer_FAQ#Examining_backend_memory_use
Note you may need a debug build for that recipe to work.
regards, tom lane
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