Re: Perl,Postmaster and CPU question?? - Mailing list pgsql-hackers

From Doug McNaught
Subject Re: Perl,Postmaster and CPU question??
Date
Msg-id m3ae13zv2i.fsf@belphigor.mcnaught.org
Whole thread Raw
In response to Perl,Postmaster and CPU question??  ("gabriel" <gabriel@workingnetsp.com.br>)
List pgsql-hackers
"gabriel" <gabriel@workingnetsp.com.br> writes:

> hello all 
> 
> I have a perl script that read a text file and 
> insert the data in a table...
> 
> but when this script is runing the usage of CPU by postmaster grows to
> between 79 and 90 percent...

And this is a problem because...  ?

Honestly, you're doing a lot of work, why wouldn't the CPU be busy?

> there's something to do about it?

Are you using COPY or a series of INSERTs?  If the latter, are you
doing them all inside a transaction?  INSERTs not wrapped in a
transaction will load the system a lot more due to transaction
overhead and disk sync latency.

-Doug
-- 
Free Dmitry Sklyarov! 
http://www.freesklyarov.org/ 

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