Re: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
On Sat, Sep 27, 2008 at 12:50 PM, Richard Lynch [EMAIL PROTECTED] wrote:
memory_limit and time_limit are implemented down in the guts of the PHP
interpreter; They are not magic.
They can't do diddly when PHP is running some other binary...
From: Thodoris [EMAIL PROTECTED]
Sent: Saturday, September 27, 2008 8:24 AM
To: [EMAIL PROTECTED]; php-general@lists.php.net
Subject: Re: [PHP] Questions regarding limits of processes launched by
system, exec,passthru ...
Hello all,
Is there a way to limit the memory consumption and / or the CPU
consumption of processes launched by the php functions system,
exec, passthru, proc_open and shell_exec?
We use mod_php with an apache (mpm-prefork) on Linux.
The following settings don't have any effect at all:
PHP:
max_execution_time 30
memory_limit 8M
Apache:
RLimitCPU 30 30
RLimitMEM 8388608 8388608
The limits above do have effect on php-scripts (without system calls)
and on CGIs (as well on processes launched by CGIs).
Any Ideas?
Kind Regards
valli
PS: I tested it with the following two scripts:
system_memorytest.php
=
html
head
titlephp-systemcall-memory test/title
/head
body
php-systemcall-memory testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$s = teststr_;
while (1) {
print len=.length($s).br\n;
sleep(1);
$s .= $s;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
system_timeouttest.php
==
html
head
titlephp-systemcall-timeout test/title
/head
body
php-systemcall-timeout testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$i = 0;
while (1) {
if (($i % 1000) == 0) {
print i=.$i.br\n;
}
$i += 1;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
Well as far as I know there are already memory limits to every php
process and you define this in php.ini. I recently made a script that
used to exhaust all the given memory and I needed to increase the limit.
memory_limit = 16M
You can change this to whatever you wish to control. You can also
change these if you want to control execution time:
max_execution_time = 30 ; Maximum execution time of each script, in
seconds
max_input_time = 60 ; Maximum amount of time each script may spend
parsing request data
I haven't seen a way to control disk access space but I guess there are
two ways to do that. One is quota the space that php writes in or do
this by the programming way (meaning that you may check the space before
you write something).
As for the CPU I think there are OS specific techniques to control
resource usage in general but it depends on what *nix system you use
(FreeBSD, Linux etc).
Thodoris
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The information in this email or in any file attached
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addressed and may contain information that is propri-
etary and confidential. If you are not the intended
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any review, dissemination, distribution or copying of
this message is strictly prohibited. This communica-
tion is for information purposes only and should not
be regarded as an offer to sell or as a solicitation
of an offer to buy any financial product. Email trans-
mission cannot be guaranteed to be secure or error-
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Assuming a linux hosted server, see about getting a user created with ulimit
(which limits the resources on calls to system) if you can use that user
--
Bastien
Cat, the other other white meat
Re: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
Hello all,
Is there a way to limit the memory consumption and / or the CPU
consumption of processes launched by the php functions system,
exec, passthru, proc_open and shell_exec?
We use mod_php with an apache (mpm-prefork) on Linux.
The following settings don't have any effect at all:
PHP:
max_execution_time 30
memory_limit 8M
Apache:
RLimitCPU 30 30
RLimitMEM 8388608 8388608
The limits above do have effect on php-scripts (without system calls)
and on CGIs (as well on processes launched by CGIs).
Any Ideas?
Kind Regards
valli
PS: I tested it with the following two scripts:
system_memorytest.php
=
html
head
titlephp-systemcall-memory test/title
/head
body
php-systemcall-memory testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$s = teststr_;
while (1) {
print len=.length($s).br\n;
sleep(1);
$s .= $s;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
system_timeouttest.php
==
html
head
titlephp-systemcall-timeout test/title
/head
body
php-systemcall-timeout testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$i = 0;
while (1) {
if (($i % 1000) == 0) {
print i=.$i.br\n;
}
$i += 1;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
Well as far as I know there are already memory limits to every php
process and you define this in php.ini. I recently made a script that
used to exhaust all the given memory and I needed to increase the limit.
memory_limit = 16M
You can change this to whatever you wish to control. You can also
change these if you want to control execution time:
max_execution_time = 30 ; Maximum execution time of each script, in
seconds
max_input_time = 60 ; Maximum amount of time each script may spend
parsing request data
I haven't seen a way to control disk access space but I guess there are
two ways to do that. One is quota the space that php writes in or do
this by the programming way (meaning that you may check the space before
you write something).
As for the CPU I think there are OS specific techniques to control
resource usage in general but it depends on what *nix system you use
(FreeBSD, Linux etc).
Thodoris
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
O/H Thodoris έγραψε:
Hello all,
Is there a way to limit the memory consumption and / or the CPU
consumption of processes launched by the php functions system,
exec, passthru, proc_open and shell_exec?
We use mod_php with an apache (mpm-prefork) on Linux.
The following settings don't have any effect at all:
PHP:
max_execution_time 30
memory_limit 8M
Apache:
RLimitCPU 30 30
RLimitMEM 8388608 8388608
The limits above do have effect on php-scripts (without system calls)
and on CGIs (as well on processes launched by CGIs).
Any Ideas?
Kind Regards
valli
PS: I tested it with the following two scripts:
system_memorytest.php
=
html
head
titlephp-systemcall-memory test/title
/head
body
php-systemcall-memory testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$s = teststr_;
while (1) {
print len=.length($s).br\n;
sleep(1);
$s .= $s;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
system_timeouttest.php
==
html
head
titlephp-systemcall-timeout test/title
/head
body
php-systemcall-timeout testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$i = 0;
while (1) {
if (($i % 1000) == 0) {
print i=.$i.br\n;
}
$i += 1;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
Well as far as I know there are already memory limits to every php
process and you define this in php.ini. I recently made a script that
used to exhaust all the given memory and I needed to increase the limit.
memory_limit = 16M
You can change this to whatever you wish to control. You can also
change these if you want to control execution time:
max_execution_time = 30 ; Maximum execution time of each script,
in seconds
max_input_time = 60 ; Maximum amount of time each script may spend
parsing request data
I haven't seen a way to control disk access space but I guess there
are two ways to do that. One is quota the space that php writes in or
do this by the programming way (meaning that you may check the space
before you write something).
As for the CPU I think there are OS specific techniques to control
resource usage in general but it depends on what *nix system you use
(FreeBSD, Linux etc).
Thodoris
Sorry for the mistake I misread the original question.
The fact is that if I am correct when you call something using system a
different process is handling this so you can do this only using the OS.
In this case php.ini has no effect.
--
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To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
memory_limit and time_limit are implemented down in the guts of the PHP
interpreter; They are not magic.
They can't do diddly when PHP is running some other binary...
From: Thodoris [EMAIL PROTECTED]
Sent: Saturday, September 27, 2008 8:24 AM
To: [EMAIL PROTECTED]; php-general@lists.php.net
Subject: Re: [PHP] Questions regarding limits of processes launched by system,
exec,passthru ...
Hello all,
Is there a way to limit the memory consumption and / or the CPU
consumption of processes launched by the php functions system,
exec, passthru, proc_open and shell_exec?
We use mod_php with an apache (mpm-prefork) on Linux.
The following settings don't have any effect at all:
PHP:
max_execution_time 30
memory_limit 8M
Apache:
RLimitCPU 30 30
RLimitMEM 8388608 8388608
The limits above do have effect on php-scripts (without system calls)
and on CGIs (as well on processes launched by CGIs).
Any Ideas?
Kind Regards
valli
PS: I tested it with the following two scripts:
system_memorytest.php
=
html
head
titlephp-systemcall-memory test/title
/head
body
php-systemcall-memory testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$s = teststr_;
while (1) {
print len=.length($s).br\n;
sleep(1);
$s .= $s;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
system_timeouttest.php
==
html
head
titlephp-systemcall-timeout test/title
/head
body
php-systemcall-timeout testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$i = 0;
while (1) {
if (($i % 1000) == 0) {
print i=.$i.br\n;
}
$i += 1;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
Well as far as I know there are already memory limits to every php
process and you define this in php.ini. I recently made a script that
used to exhaust all the given memory and I needed to increase the limit.
memory_limit = 16M
You can change this to whatever you wish to control. You can also
change these if you want to control execution time:
max_execution_time = 30 ; Maximum execution time of each script, in
seconds
max_input_time = 60 ; Maximum amount of time each script may spend
parsing request data
I haven't seen a way to control disk access space but I guess there are
two ways to do that. One is quota the space that php writes in or do
this by the programming way (meaning that you may check the space before
you write something).
As for the CPU I think there are OS specific techniques to control
resource usage in general but it depends on what *nix system you use
(FreeBSD, Linux etc).
Thodoris
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
___
The information in this email or in any file attached
hereto is intended only for the personal and confiden-
tial use of the individual or entity to which it is
addressed and may contain information that is propri-
etary and confidential. If you are not the intended
recipient of this message you are hereby notified that
any review, dissemination, distribution or copying of
this message is strictly prohibited. This communica-
tion is for information purposes only and should not
be regarded as an offer to sell or as a solicitation
of an offer to buy any financial product. Email trans-
mission cannot be guaranteed to be secure or error-
free. P6070214
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Questions regarding limits of processes launched by system, exec, passthru ...
Hello all,
Is there a way to limit the memory consumption and / or the CPU
consumption of processes launched by the php functions system,
exec, passthru, proc_open and shell_exec?
We use mod_php with an apache (mpm-prefork) on Linux.
The following settings don't have any effect at all:
PHP:
max_execution_time 30
memory_limit 8M
Apache:
RLimitCPU 30 30
RLimitMEM 8388608 8388608
The limits above do have effect on php-scripts (without system calls)
and on CGIs (as well on processes launched by CGIs).
Any Ideas?
Kind Regards
valli
PS: I tested it with the following two scripts:
system_memorytest.php
=
html
head
titlephp-systemcall-memory test/title
/head
body
php-systemcall-memory testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$s = teststr_;
while (1) {
print len=.length($s).br\n;
sleep(1);
$s .= $s;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
system_timeouttest.php
==
html
head
titlephp-systemcall-timeout test/title
/head
body
php-systemcall-timeout testbr
... and here's the system call:br
pre
?php
$cmd = '/usr/bin/perl -e \'
$| = 1;
print start of the systemcallbr\n;
$i = 0;
while (1) {
if (($i % 1000) == 0) {
print i=.$i.br\n;
}
$i += 1;
}
\'';
print htmlspecialchars($cmd);
?
/pre
?php
ob_flush();
flush();
system($cmd);
?
/body
/html
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
-Original Message- Is there a way to limit the memory consumption and / or the CPU consumption of processes launched by the php functions system, exec, passthru, proc_open and shell_exec? I suspect... PHP pretty much releases control to the shell or whatever, and just waits around for it to finish. You'll have to put limits into the called processes, I think I could be wrong. ___ The information in this email or in any file attached hereto is intended only for the personal and confiden- tial use of the individual or entity to which it is addressed and may contain information that is propri- etary and confidential. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communica- tion is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product. Email trans- mission cannot be guaranteed to be secure or error- free. P6070214
Re: [PHP] Questions regarding limits of processes launched by system, exec, passthru ...
On Thu, Sep 25, 2008 at 4:28 AM, Valentin Schmid - ICSurselva AG [EMAIL PROTECTED] wrote: Hello all, Is there a way to limit the memory consumption and / or the CPU consumption of processes launched by the php functions system, exec, passthru, proc_open and shell_exec? Since you're working on a *NIX system, check out PHP's pcntl_* functions[1] and the *NIX `nice` function[2]. 1: http://www.php.net/manual/en/ref.pcntl.php 2: http://www.manpagez.com/man/1/nice/ -- /Daniel P. Brown More full-root dedicated server packages: Intel 2.4GHz/60GB/512MB/2TB $49.99/mo. Intel 3.06GHz/80GB/1GB/2TB $59.99/mo. Intel 2.4GHz/320/GB/1GB/3TB $74.99/mo. Dedicated servers, VPS, and hosting from $2.50/mo. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
