Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Chris Withers]

Dieter Maurer wrote:


When your Zope comes back again (i.e. stops iterating finally),
you can use my ZopeProfiler
  
to learn what is using time (not memory!) in your Zope instance.


I know about your excellent profiler already, but the problem here is memory 
rather than CPU usage.

cheers,

Chris


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Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Chris Withers]

Toby Dickenson wrote:

If you have got a live one then "Control Panel" / "Debug Information" will 
show current  requests.

Yaknow, I never even noticed that and it could be exactly what I'm after...

thanks,

Chris


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Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Chris Withers]

Leonardo Rochael Almeida wrote:


http://www.zope.org/Members/4am/debugspinningzope

http://www.zope.org/Members/mcdonc/Products/ForensicLogger


Thanks for the links :-)

cheers,

Chris


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Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Dieter Maurer]

Chris Withers wrote at 2003-2-18 16:04 +:
 > I have a Zope instance whose memory usage is ballooning every so often (to 800Mb 
 > or so :-S) Now, I can see using top that one Zope process is using a lot of CPU 
 > and I'm guessing it's doing some silly iteration that's dragging huge numbers of 
 > objects into memory.
 > 
 > The problem is that I'm having a pretty hard time figuring out what this process 
 > is doing and how I can prevent it. So, does anyone have any idea how I can find out?

When your Zope comes back again (i.e. stops iterating finally),
you can use my ZopeProfiler
  
to learn what is using time (not memory!) in your Zope instance.

 > As a related question, does the line get written to Z2.log before or after 
 > serving the request has been completed?

Its written after the request. Only then, the response code and
Content-Length is known.

 > Hmmm, just had another thought. Does ChrisM's 'big m' logging show how much 
 > memory was used to serve a particular request?

No, as memory consumption is not attributed to a thread (and
therefore a request).


Dieter

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Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Toby Dickenson]

On Tuesday 18 February 2003 4:04 pm, Chris Withers wrote:
> Hi,
>
> I have a Zope instance whose memory usage is ballooning every so often (to
> 800Mb or so :-S) Now, I can see using top that one Zope process is using a
> lot of CPU and I'm guessing it's doing some silly iteration that's dragging
> huge numbers of objects into memory.

If you have got a live one then "Control Panel" / "Debug Information" will 
show current  requests.

> As a related question, does the line get written to Z2.log before or after
> serving the request has been completed?

You mean the log that has a field for the number of bytes sent back to the 
client?

;-)

-- 
Toby Dickenson
http://www.geminidataloggers.com/people/tdickenson

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Re: [Zope-dev] How can I tell what a Zope Process is doing?

[Leonardo Rochael Almeida]

On Tue, 2003-02-18 at 13:04, Chris Withers wrote:
> [...]
> The problem is that I'm having a pretty hard time figuring out what this process 
> is doing and how I can prevent it. So, does anyone have any idea how I can find out?

This page has really helped me in the past

http://www.zope.org/Members/4am/debugspinningzope

> As a related question, does the line get written to Z2.log before or after 
> serving the request has been completed?

I don't know, but it's easy to find out. Create an external method that
sleeps for a number of seconds. You can also experiment with
RESPONSE.write() to see if it affects anything.

> 
> Hmmm, just had another thought. Does ChrisM's 'big m' logging show how much 
> memory was used to serve a particular request?

I don't think so. I can't think of a way you could have this information
from python seeing that, on linux at least, all memory is owned by all
threads of a process. You could try to install the ForensicLogger and
configure a small interval between measurements.

http://www.zope.org/Members/mcdonc/Products/ForensicLogger

Cheers, Leo

-- 
Ideas don't stay in some minds very long because they don't like
solitary confinement.


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[Zope-dev] How can I tell what a Zope Process is doing?

[Chris Withers]

Hi,

I have a Zope instance whose memory usage is ballooning every so often (to 800Mb 
or so :-S) Now, I can see using top that one Zope process is using a lot of CPU 
and I'm guessing it's doing some silly iteration that's dragging huge numbers of 
objects into memory.

The problem is that I'm having a pretty hard time figuring out what this process 
is doing and how I can prevent it. So, does anyone have any idea how I can find out?

As a related question, does the line get written to Z2.log before or after 
serving the request has been completed?

Hmmm, just had another thought. Does ChrisM's 'big m' logging show how much 
memory was used to serve a particular request?

cheers,

Chris


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