From: bheam at online dot no
Operating system: linux fedora core 1
PHP version: 4.3.6
PHP Bug Type: Performance problem
Bug description: Random pauses in execution
Description:
------------
I'm developing a publishing tool with php, but am having trouble after i
switched server.
Old configuration:
P3 800mhz
512mb ram
New configuration
p4 2.8 x 2
512mb ram
s-ata disks, raid
both systems run:
php-4.3.3
apache-2.0.47
mysql-4.0.13 (not relevant)
also upgraded to php-4.3.6 on p4 without any change.
On the new system, the php code seems to be pausing at random places (have
been inserting error_log calls at certain points in code) for example it
suddenly spent 4 seconds between 2 error_log that only had a echo()
command in between.
I made a simple loop that echo("."), and it's smooth on the p3, but it's
choppy and pauses every now and then on the 2xP4. i also made a similar
program in c++ and it runs smooth (to prove it's not network)
i've executed the .php with php -q, proving it's not apache.
Reproduce code:
---------------
for ($cnt = 0; $cnt < 30000; $cnt++) {
for ($ca = 0;$ca < 100; $ca++) {
$a = $a * 3;
$a = $a + 1;
$a = $a / 3;
}
echo(".");
}
--
Edit bug report at http://bugs.php.net/?id=28398&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28398&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28398&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28398&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28398&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28398&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28398&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28398&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28398&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28398&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28398&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28398&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28398&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28398&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28398&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28398&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28398&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28398&r=float
