Re: Huge memory consumption during vacuum (v.8.0)

On Sun, 30 Jan 2005, Oleg Bartunov wrote:

>
> Seems, postmaster eats expected amount of memory now ! Will see how long
> it will proceeded. Probably, my case should be documented somewhere.

just to inform - vacuum took almost 48 hours !

>
>>
>>>
>>> Another possibility is to use CLUSTER or a rewriting ALTER TABLE to
>>> shrink the space, but be aware that this requires a transient second
>>> copy of the table and indexes.
>
> I aware, but I don't so much free space :)

I run
wsdb=# create table c_usno as select * from usno order by ipix;
to cluster table and notice that disk usage changing in discontinuous manner.
After some reduction I see no changes. postmaster is doing something

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12723 postgres 18 0 207m 196m 204m D 21.6 19.4 52:17.12 postmaster

I see that pgsql_tmp/ contains files, looks like clustered table.
What postmaster is doing if disk usage doesn't changed ?

>
> Is there TODO for scaling VACUUM FULL ?
>
>
>
>>>
>>> regards, tom lane
>>>
>>
>> Regards,
>> Oleg
>> _____________________________________________________________
>> Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
>> Sternberg Astronomical Institute, Moscow University (Russia)
>> Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
>> phone: +007(095)939-16-83, +007(095)939-23-83
>>
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>
> Regards,
> Oleg
> _____________________________________________________________
> Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
> Sternberg Astronomical Institute, Moscow University (Russia)
> Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
> phone: +007(095)939-16-83, +007(095)939-23-83
>
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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83