[PHP-DEV] Memory limit is used for all scripts instead of one?

[Swift]

Warning: Could not execute mail delivery program in
/local/Web/sites/phpweb/bugs.php on line 419
Mail not sent!
Please send this page in a mail to [EMAIL PROTECTED] manually.

--

Hi there!

As far as I understand, the option "memory_limit" sets the mem-limit for

ONE script.
I installed PHP as a Apache module and I set the memory_limit to 16M
(via php.ini).

When I allocate 8M of memory, all works fine. But when two different
scripts each allocate 8M, I will get sometimes the following message:
Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to
allocate 4194304 bytes) in /usr/local/httpd/htdocs/testxx.php on line 6

Both scripts (testx.php and testxx.php) contain the following code:
";
  }
?>

First, 1 byte will be allocated, then 2, then 4 and so on. The last
allocated string has a size of 8M.
It's a little difficult to reproduce the problem because I have to call
both scripts exactly at the same time from my browser. But, as I said,
sometimes I get the described error-message.

My question is: Is this normal and memory_limit sets the limit for ALL
scripts that are currently running or is this a bug?

Thanks in advance!

 ... tobias wiersch from germany



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

Re: [PHP-DEV] Memory limit is used for all scripts instead ofone? NEW: CRASHING

[Swift]

Hi Zeev!

Zeev Suraski wrote:

> memory_limit applies for the duration of a single script.  Each script will
> not be allowed to obtain more than 8MB;  So, the problem you're having
> originates someplace else (perhaps other parts of PHP grow to consume more
> memory, e.g., persistent resource tables or something of the sort).

The problem arrived with PHP4.0.6 which I installed yesterday. But in the meantime I 
discovered
another BIG problem: Our server crashed tonight! Until yesterday PHP4.0.4pl1 was 
installed and
it run without problems for months. So it seems that PHP4.0.6 caused the problem.

I looked through the apache's error_log but I couldn't find anything special...the 
server
simply stopped.
Is this a known problem? Should I go back to 4.0.4pl1 or is it possible that I made a 
mistake
while compiling the source? But the strange thing is that the server crashed not 
instantly but
after 9 hours (we have 800,000 hits per day and at the time of the crash we had only a 
very
small load). There were no seg. fault or something like that.

Thanx for your help..

 ... tobias wiersch from .de



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

Re: [PHP-DEV] Memory limit is used for all scripts insteadofone? NEW: CRASHING

[Swift]

Hi Zeev!

Zeev Suraski wrote:

> This isn't a known problem (well, at least I haven't heard any such
> complaints).  It may be a coincidence (i.e. not related to 4.0.6) - I'd
> wait and see if this problem persists.

Thanks for your help. Ok, I will give it a try.
But back to the first problem. You said that the memory_limit applies to only ONE
script (as I thought). You said that the problem may be somewhere else.

But I got the described error-message without any load! I cutted our leased-line
before the tests and then only executed the 2 test-scripts. And in 10-20% of the
cases I got the error-message. BTW, our server has 512MB RAM and 90% free, so RAM
seems not to be the problem. The second strange thing is: With 4.0.4pl1 the
memory_limit was 8M and with 4.0.6 I increased it to 16M. I never got the message
with 4.0.4pl1 but with 4.0.6 nearly instantly (after a few minutes the first time)!

The two test-scripts only allocate 8MB each. When I execute only these two scripts
and the server has no load besides of that and >400MB free RAM, and the mem-limit
is 16M --- why will I get sometimes the out-of-memory warning? This theoretically
can't be, right!? Maybe this has something to do why the server crashed tonight...?
Help!

 ... tobias wiersch from .de



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

[PHP-DEV] More infos: "Memory limit is used for all scripts instead of one?"

[Swift]

Hi Zeev!

I tested a little around:
1) I dropped our leased-line, so there is no load.
2) I set the mem_limit to 12M.
3) Reboot
4) I used the 2 test-scripts as shown in one of my last mails. I called both
scripts via wget at the same time. Each script should allocate 8M.
5) The wget-script then automatically saves the result and waits for 10 seconds.
Then looping 4) and 5) 100 times.

When I looked at the results I saw that in 40-50% of cases I will get the described
out-of-mem-error!? And this can't be, because there was >400MB free memory. Do you
have an idea what I can do now?

After that I made a reboot and plugged our leased-line back in place.
I fear that the server will crash again tonight. But the server will now write the
results from 'ps', 'pstree' and 'free' every 2 minutes to a text-file. I hope this
will explain some things.

 ... tobias wiersch from .de



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

Re: [PHP-DEV] Memory limit is used for all scriptsinsteadofone? NEW: CRASHING

[Swift]

Hi Zeev!

Zeev Suraski wrote:

> Saying it worked in 4.0.4 was quite a valuable piece of information.  I can
> confirm now that memory_limit is broken in 4.0.6, I'll submit a fix to CVS
> soon.

Great! Thanks for your help and work! BTW, my bug-# was 11739.

As I wrote yesterday, I now have a bunch of log-files. Apache-childrens seem to
consume more and more memory over the time when executing php-scripts.
Yesterday at 18:00h (medium load) each child shows only 2.0% of total mem in
'ps' and now, in the morning at 09:00h (a little load), it was 2.6% of total
mem, at 09:30h (still a little load) it was 3.0% and now, at 10:10h, it's 3.3%!!

I looked through the bug-database and found the following entries:
11676 and 11723.
These seem to describe the same problem.

Is it possible that this has to do with the bug you found in memory_limit or is
this maybe another bug?

Used mem (without buffers and cache) over the time on the machine (machine
started at 15:00h):
18:00h:97MB, 00:00h:132MB, 06:00h:130MB, 10:00h:160MB!! - very strange.

 ... tobias wiersch from .de



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]

[PHP-DEV] Bug #10508: Wrong result when comparing two specific strings via "==".

[swift]

From: [EMAIL PROTECTED]
Operating system: W2K
PHP version:  4.0.4pl1
PHP Bug Type: Scripting Engine problem
Bug description:  Wrong result when comparing two specific strings via "==".

Hi!

This seems to be a bug:



This will produce the output "Why?" on my system ... but: why?
"00" isn't equal "D0"!?

If I'm wrong, please tell me why ... thanks!!

 ... tobias wiersch



-- 
Edit Bug report at: http://bugs.php.net/?id=10508&edit=1



-- 
PHP Development Mailing List 
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]