On Sep 28, 2009, at 4:40 PM, jeff brown wrote:
Yes, that's the best way to clean up after yourself. And you really
should use that on anything you have sitting around daemon like.
Jeff
Philip Thompson wrote:
On Sep 28, 2009, at 4:27 PM, Ralph Deffke wrote:
well this sound clearly to me like you are not freeing resultsets
you are not going to use anymore. In long scripts you have to take
care of this. on short scripts you can be a bit weak on that,
because the resultsets are closed and freed on script ending.
assumed u r using MySQL are u using mysql_free_result($result)
goog luck
ralph_deffke@xxxxxxxx
"Philip Thompson" <philthathril@xxxxxxxxx> wrote in message news:9C0B9C4C-5E64-4519-862B-8A3E1DA4DE4C@xxxxxxxxx
...
Hi all.
I have a script that opens a socket, creates a persistent mysql
connection, and loops to receive data. When the amount of specified
data has been received, it calls a class which processes the data
and
inserts it into the database. Each iteration, I unset/destruct that
class I call. However, the script keeps going up in memory and
eventually runs out, causing a fatal error. Any thoughts on where
to
start to see where I'm losing my memory?
Thanks in advance,
~Philip
I am not using mysql_free_result(). Is that highly recommended by
all?
Thanks,
~Philip
I took your suggestions and made sure to clean up after myself. I'm
running into something that *appears* to be a bug with
mysql_free_result(). Here's a snippet of my db class.
<?php
class db {
function fetch ($sql, $assoc=false)
{
echo "\nMemory usage before query: " . number_format
(memory_get_usage ()) . "\n";
$resultSet = $this->query($sql);
echo "Memory usage after query: " . number_format
(memory_get_usage ()) . "\n";
if (!$assoc) { $result = $this->fetch_row($resultSet); }
else {
$result = $this->fetch_array($resultSet);
echo "Memory usage after fetch: " . number_format
(memory_get_usage ()) . "\n";
}
$this->freeResult($resultSet);
echo "Memory usage after free: " . number_format
(memory_get_usage ()) . "\n";
return $result;
}
function freeResult ($result)
{
if (is_resource ($result)) {
if (!mysql_free_result ($result)) { echo "Memory could
not be freed\n"; }
}
unset ($result); // For good measure
}
function fetch_row ($set) {
return mysql_fetch_row ($set);
}
function fetch_array ($set) {
return mysql_fetch_array ($set, MYSQL_ASSOC);
}
}
// I seem to be losing memory when I call this
$db->fetch($sql);
?>
The result I get with this is...
Memory usage before query: 6,406,548
Memory usage after query: 6,406,548
Memory usage after fetch: 6,406,548
Memory usage after free: 6,406,572
As you may notice, the memory actually goes UP after the *freeing* of
memory. Why is this happening?! What have I done wrong? Is this a bug?
Any thoughts would be appreciated.
Thanks,
~Philip
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