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Posted to users@httpd.apache.org by jekillen <je...@prodigy.net> on 2007/03/15 06:20:45 UTC
[users@httpd] Memory problems from browser point of view
Hello;
I have not had experience with this in the past
but I am doing a large project in php and I
need to know what Apache sends the browser
when it is having memory problems. For test
purposes when I have users test the program
I want to be able to get a feel for how much
memory I can expect it to use, when it gets
used and what the user will see.
Presently the machine this program is on
is a machine that will be running Apache
with ssl and php v5.2.1, gd, and mcrypt and has 1Gb
of DDR2 memory installed. Has the doc
root on a 15k SCSI drive that is dedicated
to the file system that contains the document
root tree. It is not /usr, where all the software
is. That is on another 15k SCSI drive. So I
would not think access times to be too much
of an issue. But the php scripts will do a lot
of file reading and writing (not e-mail).
httpd is the only server that will be running
on this machine as it is a production server
and will be running headless, thus no GUI.
It will be running ftpd but only for posting
content and scripts that have already been
proven on a development server on inside
network, (ftp, telnet, ssh are blocked on public network
and no mail server will be running)
Thanks in advance
Jeff K
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Re: [users@httpd] Memory problems from browser point of view
Posted by jekillen <je...@prodigy.net>.
On Mar 15, 2007, at 5:32 AM, Joshua Slive wrote:
> On 3/15/07, jekillen <je...@prodigy.net> wrote:
>> Hello;
>> I have not had experience with this in the past
>> but I am doing a large project in php and I
>> need to know what Apache sends the browser
>> when it is having memory problems.
>
> If you have MaxClients tuned correctly (that is, low enough that
> apache processes never wind up in swap space), then when you are low
> on memory apache will hit MaxClients and further clients will simply
> not be able to connect until a process is available to serve them.
>
> If MaxClients is not tuned correctly, then apache will start trying to
> use swap space and responses will become slower and slower until the
> server essentially looks dead.
>
Thanks for the reply. Now I have more to work with
In the first situation, MaxClients is low enough, what
sort of message is likely to be presented? Would this
be distinguishable from a message generated by
the server being off line?
Jeff K
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Re: [users@httpd] Memory problems from browser point of view
Posted by Joshua Slive <jo...@slive.ca>.
On 3/15/07, jekillen <je...@prodigy.net> wrote:
> Hello;
> I have not had experience with this in the past
> but I am doing a large project in php and I
> need to know what Apache sends the browser
> when it is having memory problems.
If you have MaxClients tuned correctly (that is, low enough that
apache processes never wind up in swap space), then when you are low
on memory apache will hit MaxClients and further clients will simply
not be able to connect until a process is available to serve them.
If MaxClients is not tuned correctly, then apache will start trying to
use swap space and responses will become slower and slower until the
server essentially looks dead.
---------------------------------------------------------------------
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See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
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