#22744 [Fbk->Opn]: Split hangs on something that 'file' does quickly
| From: | tim at timcrider dot com | Date: | Tue, 18 Mar 2003 19:02:00 +0000 |
| Subject: | #22744 [Fbk->Opn]: Split hangs on something that 'file' does quickly | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-35864@lists.php.net to get a copy of this message | ||
ID: 22744
User updated by: tim at timcrider dot com
Reported By: tim at timcrider dot com
-Status: Feedback
+Status: Open
Bug Type: Performance problem
Operating System: Red Hat 8.0
PHP Version: 4.3.2RC1
New Comment:
I apologize the second script is bogus. Here is the fix:
---[ works.php ]---
#!/bin/php
<?php
$mybin = "/usr/local/mysql/bin/mysqlbinlog";
$mylogpath = "/var/lib/mysql/";
$dolog = $mylogpath."towely-bin.010";
$lstk = exec("mysqlbinlog $dolog");
print_r($lstk);
print count($lstk)."\n";
?>
(towely) phpbug# more test.php
#!/bin/php
<?php
$mybin = "/usr/local/mysql/bin/mysqlbinlog";
$mylogpath = "/var/lib/mysql/";
$dolog = $mylogpath."towely-bin.010";
$tmpfname = tempnam ("/tmp", "mybinlogger");
$fp = fopen($tmpfname, "w");
fwrite($fp,
$mybin $dolog);
fclose($fp);
$lstk = file($tmpfname);
unset($tmpfname);
print count($lstk)."\n";
?>
--[ End works.php ]---
---[ broken.php ]---
#!/bin/php
<?php
$mybin = "/usr/local/mysql/bin/mysqlbinlog";
$mylogpath = "/var/lib/mysql/";
$dolog = $mylogpath."towely-bin.010";
$sys = mysqlbinlog $dolog;
$lstk = split("\n", $sys);
print_r($lstk);
print count($lstk)."\n";
?>
---[ End broken.php ]---
Using exec does not give me the output that I need to do this. exec
only returns the last line of the output. I'm trying to get all of the
output, which has line breaks at the end of every row.
I did a dump of this server using 'php -i > php_ini.txt
and can be seen here.
http://timcrider.com/php_ini.txt
If there is anything else you need me to do let me know.
Tim
Previous Comments:
------------------------------------------------------------------------
[2003-03-18 12:41:51] wez@php.net
Your second test script look bogus to me.
Have you considered using http://www.php.net/manual/en/ref.exec.php,
which gives the lines as an array anyway?
How big is the logfile? Do you have magic_quotes enabled?
If you leave it running, how long does it take to complete and how much
memory does it use?
------------------------------------------------------------------------
[2003-03-17 09:04:26] tim at timcrider dot com
split hangs for some reason, but doing the same logical process with
other functions returns a very quick result.
The problem is that I'm trying to process the mysqlbinlog output and
parse it for easier management. The logical process is as follows.
$sys = mysqlbinlog logfile;
This part works fine, but when I try:
$lstk = split("\n", $sys);
the script hangs for well over 5 minutes (I kill the script at that
time. However this code produces the desired results in less than 2
seconds:
$mybin = "/usr/local/mysql/bin/mysqlbinlog";
$mylogpath = "/var/lib/mysql/";
$dolog = $mylogpath."towely-bin.010";
$tmpfname = tempnam ("/tmp", "mybinlogger");
$fp = fopen($fp, $tmpfname);
fwrite($fp, $mybin $dolog);
fclose($fp);
$lstk = file($tmpfname);
unset($tmpfname);
print count($lstk)."\n";
I am using this from the command line version of php 4.3.2 RC1. Here is
my php -v:
PHP 4.3.2-RC1 (cli) (built: Mar 14 2003 13:28:33)
Copyright (c) 1997-2003 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies
with the ionCube PHP Accelerator v1.3.3r2, Copyright (c) 2001-2002,
by Nick Lindridge
If you need any other information please feel free to contact me at
tim@timcrider.com
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=22744&edit=1