Re: buildfarm: strange OOM failures on markhor (running CLOBBER_CACHE_RECURSIVELY)

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От Tomas Vondra
Тема Re: buildfarm: strange OOM failures on markhor (running CLOBBER_CACHE_RECURSIVELY)
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Msg-id 5377CCB2.7080101@fuzzy.cz
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Ответ на Re: buildfarm: strange OOM failures on markhor (running CLOBBER_CACHE_RECURSIVELY)  (Tomas Vondra <tv@fuzzy.cz>)
Ответы Re: buildfarm: strange OOM failures on markhor (running CLOBBER_CACHE_RECURSIVELY)
Список pgsql-hackers
On 17.5.2014 22:33, Tomas Vondra wrote:
> On 17.5.2014 21:31, Andres Freund wrote:
>> On 2014-05-17 20:41:37 +0200, Tomas Vondra wrote:
>>> On 17.5.2014 19:55, Tom Lane wrote:
>>>> Tomas Vondra <tv@fuzzy.cz> writes:
>>> The tests are already running, and there are a few postgres processes:
>>>
>>>   PID   VIRT  RES %CPU    TIME+  COMMAND
>>> 11478   449m 240m 100.0 112:53.57 postgres: pgbuild regression [local]
>>> CREATE VIEW
>>> 11423   219m  19m  0.0   0:00.17 postgres: checkpointer process
>>> 11424   219m 2880  0.0   0:00.05 postgres: writer process
>>> 11425   219m 5920  0.0   0:00.12 postgres: wal writer process
>>> 11426   219m 2708  0.0   0:00.05 postgres: autovacuum launcher process
>>> 11427  79544 1836  0.0   0:00.17 postgres: stats collector process
>>> 11479  1198m 1.0g  0.0  91:09.99 postgres: pgbuild regression [local]
>>> CREATE INDEX waiting
>>>
>>> Attached is 'pmap -x' output for the two interesting processes (11478,
>>> 11479).
>>
>> Could you gdb -p 11479 into the process and issue 'p
>> MemoryContextStats(TopMemoryContext)'. That should print information
>> about the server's allocation to its stderr.

And another memory context stats for a session executing CREATE INDEX,
while having allocated  The interesting thing is there are ~11k lines
that look exactly like this:

pg_namespace_oid_index: 1024 total in 1 blocks; 88 free (0 chunks); 936 used

Seems a bit strange to me.

Tomas

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