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Posted to users@httpd.apache.org by Chidanand Gangur <ch...@gmail.com> on 2006/08/30 09:40:14 UTC
[users@httpd] Scoreboard file not created
Hi,
I have compiled apache 1.3.34 on linux 2.4.28 the compilation went through
fine and no issues in normal working of apache. I want to enable scoreboard
feature of apache, I have added the corresponding configuration line in
httpd.conf but still the contfiguration file but still i do not find the
scoreboard file.
I also tried compiling with HAVE_SHMGET=1 USE_SHMGET_SCOREBOARD=1
Is there any other compilation option to be enabled.
--
Chidanand Gangur
Pune.
Re: [users@httpd] Scoreboard file not created
Posted by Joshua Slive <jo...@slive.ca>.
On 8/30/06, Chidanand Gangur <ch...@gmail.com> wrote:
> Well I have already tried mod_status. I was under the impression that the
> scoreboard file would give me some more information.
>
> To give some more details about my test
>
> I have following server configuration
>
> Timeout 300
> MaxKeepAliveRequests 500
> KeepAliveTimeout 6
> KeepAlive On
> MinSpareServers 16
> MaxSpareServers 32
> StartServers 4
> MaxClients 250
> MaxRequestsPerChild 500
>
> My test is:
>
> I fire http request using curl form a simulated set up. these request are
> fired at the rate of 4 request per second. Roughly there are 240 requests in
> 60 seconds.
>
> With this kind of set up I see apache reaching to the MaxClient Limit and
> things going.
>
> with KeepAliveTimeout as 6 why are the process not recovering?
>
> I would appreciate your help to understand this scenario.
Does setting KeepAlive off change anything? What does server-status
look like during this time? Is it possible your php scripts just
aren't responding fast enough, causing the server to run out of
processes?
Joshua.
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Re: [users@httpd] Scoreboard file not created
Posted by Chidanand Gangur <ch...@gmail.com>.
Well I have already tried mod_status. I was under the impression that the
scoreboard file would give me some more information.
To give some more details about my test
I have following server configuration
Timeout 300
MaxKeepAliveRequests 500
KeepAliveTimeout 6
KeepAlive On
MinSpareServers 16
MaxSpareServers 32
StartServers 4
MaxClients 250
MaxRequestsPerChild 500
My test is:
I fire http request using curl form a simulated set up. these request are
fired at the rate of 4 request per second. Roughly there are 240 requests in
60 seconds.
With this kind of set up I see apache reaching to the MaxClient Limit and
things going.
with KeepAliveTimeout as 6 why are the process not recovering?
I would appreciate your help to understand this scenario.
On 8/30/06, Joshua Slive <jo...@slive.ca> wrote:
>
> On 8/30/06, Chidanand Gangur <ch...@gmail.com> wrote:
> > I have a condition in my network where all of a sudden the server
> becomes
> > unresponsive I want to know what and where things are messing up.
> >
> > I am using PHP for server side scripting where I open UNIX dgram socket
> to
> > comunicate to the back end. I have a test where 800-1000 user try to
> access
> > the server.
> >
> > I see lot of UNIX stream sockets in connected state in net stat though
> I
> > am using UNIX dgram sockets. I also see the apache has reached MaxClient
> > limit of 250.
> >
> > When such condition arises I see whole of my system becomes slow.
> > I want to get a clear idea where things are messing up.
>
> If you want to look at the scoreboard, use the server-status handler
> provided by mod_status. This won't, of course, help if your server is
> completely locked up. But I don't think you're going to get anywhere
> trying to debug the raw scoreboard. And it doesn't seem to have
> anything to do with your problem.
>
> Obviously if you have 1000 clients connecting and MaxClient of 250,
> you're not going to get much performance. If you want to really see
> what apache is up to, use a debugger as described here:
> http://httpd.apache.org/dev/debugging.html#backtrace
>
> Joshua.
>
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> See <URL:http://httpd.apache.org/userslist.html> for more info.
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>
>
--
Chidanand Gangur
Pune.
Re: [users@httpd] Scoreboard file not created
Posted by Joshua Slive <jo...@slive.ca>.
On 8/30/06, Chidanand Gangur <ch...@gmail.com> wrote:
> I have a condition in my network where all of a sudden the server becomes
> unresponsive I want to know what and where things are messing up.
>
> I am using PHP for server side scripting where I open UNIX dgram socket to
> comunicate to the back end. I have a test where 800-1000 user try to access
> the server.
>
> I see lot of UNIX stream sockets in connected state in net stat though I
> am using UNIX dgram sockets. I also see the apache has reached MaxClient
> limit of 250.
>
> When such condition arises I see whole of my system becomes slow.
> I want to get a clear idea where things are messing up.
If you want to look at the scoreboard, use the server-status handler
provided by mod_status. This won't, of course, help if your server is
completely locked up. But I don't think you're going to get anywhere
trying to debug the raw scoreboard. And it doesn't seem to have
anything to do with your problem.
Obviously if you have 1000 clients connecting and MaxClient of 250,
you're not going to get much performance. If you want to really see
what apache is up to, use a debugger as described here:
http://httpd.apache.org/dev/debugging.html#backtrace
Joshua.
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Re: [users@httpd] Scoreboard file not created
Posted by Chidanand Gangur <ch...@gmail.com>.
I have a condition in my network where all of a sudden the server becomes
unresponsive I want to know what and where things are messing up.
I am using PHP for server side scripting where I open UNIX dgram socket to
comunicate to the back end. I have a test where 800-1000 user try to access
the server.
I see lot of UNIX stream sockets in connected state in net stat though I am
using UNIX dgram sockets. I also see the apache has reached MaxClient limit
of 250.
When such condition arises I see whole of my system becomes slow.
I want to get a clear idea where things are messing up.
On 8/30/06, Joshua Slive <jo...@slive.ca> wrote:
>
> On 8/30/06, Chidanand Gangur <ch...@gmail.com> wrote:
> > Hi,
> >
> > I have compiled apache 1.3.34 on linux 2.4.28 the compilation went
> through
> > fine and no issues in normal working of apache. I want to enable
> scoreboard
> > feature of apache, I have added the corresponding configuration line in
> > httpd.conf but still the contfiguration file but still i do not find the
> > scoreboard file.
> >
> > I also tried compiling with HAVE_SHMGET=1 USE_SHMGET_SCOREBOARD=1
> >
> > Is there any other compilation option to be enabled.
>
> First, why do you want to "enable (the) scoreboard feature of apache"?
> Normally the scoreboard is held in shared memory, which is much more
> performant. Why do you want to change this?
>
> Joshua.
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> 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
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
--
Chidanand Gangur
Pune.
Re: [users@httpd] Scoreboard file not created
Posted by Joshua Slive <jo...@slive.ca>.
On 8/30/06, Chidanand Gangur <ch...@gmail.com> wrote:
> Hi,
>
> I have compiled apache 1.3.34 on linux 2.4.28 the compilation went through
> fine and no issues in normal working of apache. I want to enable scoreboard
> feature of apache, I have added the corresponding configuration line in
> httpd.conf but still the contfiguration file but still i do not find the
> scoreboard file.
>
> I also tried compiling with HAVE_SHMGET=1 USE_SHMGET_SCOREBOARD=1
>
> Is there any other compilation option to be enabled.
First, why do you want to "enable (the) scoreboard feature of apache"?
Normally the scoreboard is held in shared memory, which is much more
performant. Why do you want to change this?
Joshua.
---------------------------------------------------------------------
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See <URL:http://httpd.apache.org/userslist.html> for more info.
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" from the digest: users-digest-unsubscribe@httpd.apache.org
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