I played with this a bit, and it looks like DBD::CSV is what is leaking. The below code leeks ~32K/iteration, and I think the leek is originating from the execute() of a statement that has a WERE clause.

If I drop the size of the where, clause it does not leak as much memory (removing it completely cause nothing to leak), and moving the connect & prepare out of the while(1) loop do not seem to do anything.

What version of SQL Statement do you have? I just tried upgrading to the latest version and that fixed the problem (But the new version is much slower, alas.)

$|++;
use strict;
use DBI;
while(1) {
     my $dbh = DBI->connect("DBI:CSV:f_dir=./")
               or die "Cannot connect: " . $DBI::errstr;
     my $bob = $dbh->prepare("select * from foo where
        1 = 1 OR
        1=1 or 1=2  or 5.6=6 or 7=7 or 9=10 or 11=23 or 6=6 or 7=7 or
        9=10 or 11=23 or 6=6 or 7=7 or 9=10 or 11=23 or 1 = 1 OR
        1=1 or 1=2  or 5.6=6 or 7=7 or 9=10 or 11=23 or 6=6 or 7=7 or
        9=10 or 11=23 or 6=6 or 7=7 or 9=10 or 11=23 or 1 = 1 OR 1=1 o
+r
        1=2  or 5.6=6 or 7=7 or 9=10 or 11=23 or 6=6 or 7=7 or 9=10 or
        11=23 or 6=6 or 7=7 or 9=10 or 11=23 or 1 = 1 OR 1=1 or 1=2  o
+r
        5.6=6 or 7=7 or 9=10 or 11=23 or 6=6 or 7=7 or 9=10 or 11=23 o
+r
        6=6 or 7=7 or 9=10 or 11=23 or 1 = 1 OR 1=1 or 1=2  or 5.6=6 o
+r
        7=7 or 9=10 or 11=23 or 6=6 or 7=7 or 9=10 or 11=23 or 6=6 or
        7=7 or 9=10 or 11=23
     ");
     $bob->execute();
     $bob->finish;
     print ".";
     sleep(1);
}

[download]

In reply to Re: DBD::CSV Memory Leak by tantarbobus
in thread DBD::CSV Memory Leak by AcidHawk

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