Memory leak

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От Michael
Тема Memory leak
Дата
Msg-id 37C393C9.8EE5EBD0@argh.demon.co.uk
обсуждение исходный текст
Ответы Re: [GENERAL] Memory leak  (The Hermit Hacker <scrappy@hub.org>)
Список pgsql-general
Hi all

I have just isolated a big problem in one of my applications and it turns out
to be a memory leak in postgresql on a VERY basic piece of functionality

It just caused a backend to grow to 133 MB in 4 hours running, which is
obviously not good

Simple piece of C code to demonstrate this:

 for (loopa=0;loopa < 100000;loopa++)
     {
       result=PQexec(dbase,"create table test_table ( "
                     "value int,wordnum int,refnum int,word text)");
       PQclear(result);

       result=PQexec(dbase,"drop table test_table");
       PQclear(result);
     }

And watch the memory risssssssse

On an aside, any idea how long till there is a fix for the vacuum analyze
crash, as it is cripling me having that happen.

Final question... Is there a really really good reason that when a backend
crashes, all the other backends die and close connection rather than simply
re-initialising their connections. If it just reinitialised transparently that
would make it a LOT easier than having to have an extra test to see if the
backend has mysteriously crashed after EVERY query!

Thanx

                M Simms

--
#define z(x,y) for (x=0;x<y;x++){
main(){long int i[3]={1214606444,1864390511,1919706122};int x,y;
 z(x,3)z(y,4)putchar((i[x]>>((3-y)<<3))&(255));
}}}


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