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------- Additional Comments From [EMAIL PROTECTED]  2005-12-30 18:21 -------
i work with Michal (first post author) to solve this bug on our server.

Today i moved to prefork apache + mod_php and the bug is still there, so this 
is not about fastcgi or threads issue.

Its free hosting server, so it is likely somebody is doing something strange 
to make it happen. 

I tried limiting apache with -v, and it works, but to even load it i need to 
incrase its virtual memory to around 40 MB or something to load all libs and 
such, and so even simple scripts can run. (when i set it so high though, a lot 
of apache process eating memory are still there, but it should stop the one 
that is crashing the box)

I think the problem has two parts:

One is a lot of apache process that has more than initial 4MB (thats how much 
prefork apache process has when i start it), are in memory. In just few 
minutes they have usually around 10-15MB each, and are moving from 4MB to 15MB 
slowly. (some of them are moving there faster, some slower)

of course this is just making this box work slow, but not crashing.

Another issue is happening few times per day, one apache process is going 
crazy, taking all available memory, crashing the box in around 3-4 seconds.

Its hard to trace it, becouse there are other not-so-dangerous too big apache 
process (also some kind of bug or misconfiguration issue i guess). Hard to 
predict which one will sudennly go crazy and trace it, we would have to trace 
all new processes, and thats not possible.

now, since i set -v limit, i hope this box-crashing bug (the first one) wont 
happen again, but i still have no idea why these apache processes are growing 
with time, from 4MB to even 15MB... looks like some memory leak, becouse when 
i strace them, they are sometimes doing nothing, and still taking 15MB of 
memory, compared to 4MB memory.

It seems similar to apache-mpm-worker, but with other numbers - with worker it 
was around 10MB or so initially growing up to 70MB. And also one crazy  
happening few times a day.


thanks for the -v tip, now i wait to see if server is still crashing or not, 
but the other memory eating apach processes issue is still there. I dont know 
is it connected to the one that is taking ALL memory in seconds, but it might 
be.

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