#17172 [Com]: highload system got error:
| From: | matt at sbi dot co dot nz | Date: | Wed, 30 Jul 2003 14:09:49 +0000 |
| Subject: | #17172 [Com]: highload system got error: | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-45057@lists.php.net to get a copy of this message | ||
ID: 17172
Comment by: matt at sbi dot co dot nz
Reported By: sunjh at 163 dot net
Status: No Feedback
Bug Type: Semaphore related
Operating System: redhat
PHP Version: 4.1.2
New Comment:
I'm getting semaphore lockups in live code under heavy load, and if I
run the example code above and push the loop to 100,000 I get the same
error using 4.2.3 on a debian stable/unstable mix.
Any word on whether this is fixed in 4.3?
Previous Comments:
------------------------------------------------------------------------
[2003-04-25 14:31:19] jleelim at hotmail dot com
I got the same error message on Redhat 9.0 on PHP 4.2.2. The problem
only happens if I increase the loop count to greater than 30,000.
------------------------------------------------------------------------
[2002-09-11 11:05:48] sniper@php.net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.
------------------------------------------------------------------------
[2002-06-04 04:21:32] mfischer@php.net
Please try CVS HEAD, there has been a bit of work on this lately.
------------------------------------------------------------------------
[2002-05-13 03:04:18] sunjh at 163 dot net
please run this scripts 10 clone at BG.
------------------------------------------------------------------------
[2002-05-13 02:51:57] sunjh at 163 dot net
highload system:
when I run this script:
for($i = 0; $i < 20000; $i++){
$semid = sem_get ( 0xf01, 1, 0666 );
if ( !$semid ) {
echo "mem.mem: Can't get semaphore<BR>";
return;
}
if ( !sem_acquire( $semid ) ) {
echo "mem.mem: Can't acquire semaphore<BR>";
return;
}
if( !sem_release( $semid ) ) {
echo "mem: Can't release semaphore";
}
}
shell is return:
semop() failed acquiring SYSVSEM_SETVAL for key 0xf01: Numerical result
out of range
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=17172&edit=1