Garbage Collector Debugging

[Gustavo Franco]

Hi,

I did a medium complex application in C#, and in some areas the memory goes
up to 60Mb, when I finish I dispose everything and setting everything to
null and calling GC.Collect, but the memory never goes below 45MB and I'm
pretty sure I'm not allocating that huge amount of memory.

Now the question is, are there some kind of tool that allow to me to see
what objects are inside of Garbage Collector?. How do I know if I freed the
resources properly?.

If my application looks like is taking 64Mb of ram al the time the users are
not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never is
released how do I supposed to know what is happening if the GC hide this
information?

Any Help?

Thanks.

[Rob Tillie]

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Rob Tillie]

The one from MS:
http://msdn.microsoft.com/library/de...mplecsharp.asp

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Noah Coad [MVP & MCP]]

WARNING!

I just downloaded, installed, and ran this Memory Profiler and now my system
is under a constant unknown 90% utlization. It is running extremely slow
for no apparent reason (no tasks show the utiliztion under Task Manager
other than "System"). Even after a reboot the system is running at 80% to
90%!

I can barely use my computer and I have a huge contract due this week! This
is very frustrating... Any recommendations ?

-Noah Coad
Microsoft MVP & MCP
"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Jack Meyhoff]

I guess you make those MVP & MCP letters look good now huh.

You dont deserve those if you do stupid things like that , havnt u heard of
vmware :D and other tools to contain test apps :D

Even more fool you for doing it on a production machine.

Guess we can remove those little letters that obviously show alot when you
do that.

"Noah Coad [MVP & MCP]" <no**@coad.ne t> wrote in message
news:es******** ******@tk2msftn gp13.phx.gbl...

WARNING!

I just downloaded, installed, and ran this Memory Profiler and now my system is under a constant unknown 90% utlization. It is running extremely slow
for no apparent reason (no tasks show the utiliztion under Task Manager
other than "System"). Even after a reboot the system is running at 80% to
90%!

I can barely use my computer and I have a huge contract due this week! This is very frustrating... Any recommendations ?

-Noah Coad
Microsoft MVP & MCP
"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Franco Gustavo]

I went to the page and it looks very good.

I'll try it!!.

Thanks,
"Stu Smith" <st*****@remove .digita.com> wrote in message
news:ue******** ******@TK2MSFTN GP12.phx.gbl...

Just going to butt in here and say that the SciTech profiler is really very good, we have a few licenses, and it's really useful in finding unexpected
references. I'd recommend it for any medium to large project.

Stu

"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Noah Coad [MVP & MCP]]

Your product does look like a good product, it was probobly a quirk. I
tried e-mailing but didn't get a response back and was distrought there
wasn't a way to contact the company directly via telephone support.

My system is back fine after running the Memory Profiler again,
loading the same application, and closing the Memory Profiler again.

It just took so long to do this because of the system load that I had to use
another computer for e-mail and newsgroups. Memory Profiler looks so good
(nice components) that I e-mailed asking what components you use for the
multicolumn list box (I'd still like to know).

-Noah

P.S. For possible debugging purposes, here is the sequence of events:

1. Loaded Memory Profiler
2. "Used Profile Application" and selected a very simple .NET app that I've
used for over a year
3. Ran the Process
4. Took a look at some values in M.P.
5. Clicked the 'Stop' button which brought up a dialog asking me if I wanted
to end the process.
6. Manually closed the application running
7. M.P. detected the program closed and asked if I wanted to save the
profile infomation (in a dialog on top of the click to stop dialog). I
clicked 'No'
8. Then I clicked the 'Cancel' button on the dialog from step 5.
9. System Load Goes to 90%
10. Closed Memory Profiler

It stopped the heavy system load after repeating steps 1 through 5, but this
time allowing M.P. to close the application. The reason this took so long
was that my system was going so slow at this point it took awhile to do
this. The warning message was brisk, my first to ever post such a message,
but it was a scare without barely being able to even use the computer to
take M.P out or try to fix it and not being able to get in touch with the
company.

"Andreas Suurkuusk" <an*****@online scitech.se> wrote in message
news:uQ******** ******@TK2MSFTN GP10.phx.gbl...

Hi,

It seems unlikely that our software could cause your system to have 90%
utilization. When installing, we do not add anything that will run on
startup, we just copy files to "C:\Program files\SciTech\N etMemProfiler",
register a
callback dll for profiling and add the icon.

When profiling a standard process this callback dll is only activated when
starting the process (using environment variables). For a service or ASP.NET profiling, it alters a set of registry variables to activate the callback
dll.These changes will be restored as soon as the process has been attached to the profiler, or when it fails to attach. Additionaly, the profiler saves all the changes it has done to the registry, so that they can be restored in the event of the profiler crashing while attaching. If you have tried to
profile ASP.NET or a service, you can try to start the profiler again. In
case something was left in the registry it will try to restore it at
startup.

Have your tried to uninstall the profiler? Does the high CPU utilization go away if you do?

Our profiler has been downloaded by thousands of developers during the past year and none has reported anything similar to your problem. I think that we should have been given the oppurtunity to solve this problem without you
posting a WARNING message on the newsgroup.
Best regards,

Andreas Suurkuusk
SciTech Software AB


"Noah Coad [MVP & MCP]" <no**@coad.ne t> skrev i meddelandet
news:es******** ******@tk2msftn gp13.phx.gbl...

WARNING!

I just downloaded, installed, and ran this Memory Profiler and now my

system

is under a constant unknown 90% utlization. It is running extremely slow for no apparent reason (no tasks show the utiliztion under Task Manager
other than "System"). Even after a reboot the system is running at 80% to 90%!

I can barely use my computer and I have a huge contract due this week!

This

is very frustrating... Any recommendations ?

-Noah Coad
Microsoft MVP & MCP
"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:
> Hi,
>
>
>
> I did a medium complex application in C#, and in some areas the
> memory goes up to 60Mb, when I finish I dispose everything and
> setting everything to null and calling GC.Collect, but the memory
> never goes below 45MB and I'm pretty sure I'm not allocating that
> huge amount of memory.
>
>
>
> Now the question is, are there some kind of tool that allow to me to
> see what objects are inside of Garbage Collector?. How do I know if I > freed the resources properly?.
>
>
>
> If my application looks like is taking 64Mb of ram al the time the
> users are not going to install it.
>
>
>
> I need any kind of tool to see the content of the GC.
>
>
>
> Supposed I have a bug and the application is taking memory and never
> is released how do I supposed to know what is happening if the GC
> hide this information?
>
>
>
> Any Help?
>
>
>
> Thanks.

[Mark Pearce]

Jack,

You should never express yourself more clearly than you are able to think.

Mark
--
Author of "Comprehens ive VB .NET Debugging"
http://www.apress.com/book/bookDisplay.html?bID=128
" Jack Meyhoff" <po********@127 .0.0.9> wrote in message
news:eZ******** ******@TK2MSFTN GP12.phx.gbl...
I guess you make those MVP & MCP letters look good now huh.

You dont deserve those if you do stupid things like that , havnt u heard of
vmware :D and other tools to contain test apps :D

Even more fool you for doing it on a production machine.

Guess we can remove those little letters that obviously show alot when you
do that.

"Noah Coad [MVP & MCP]" <no**@coad.ne t> wrote in message
news:es******** ******@tk2msftn gp13.phx.gbl...

WARNING!

I just downloaded, installed, and ran this Memory Profiler and now my system is under a constant unknown 90% utlization. It is running extremely slow
for no apparent reason (no tasks show the utiliztion under Task Manager
other than "System"). Even after a reboot the system is running at 80% to
90%!

I can barely use my computer and I have a huge contract due this week! This is very frustrating... Any recommendations ?

-Noah Coad
Microsoft MVP & MCP
"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...

You can do this with a profiler:
http://www.scitech.se/memprofiler/

Greetz,
-- Rob.

Gustavo Franco wrote:

Hi,

I did a medium complex application in C#, and in some areas the
memory goes up to 60Mb, when I finish I dispose everything and
setting everything to null and calling GC.Collect, but the memory
never goes below 45MB and I'm pretty sure I'm not allocating that
huge amount of memory.

Now the question is, are there some kind of tool that allow to me to
see what objects are inside of Garbage Collector?. How do I know if I
freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the
users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never
is released how do I supposed to know what is happening if the GC
hide this information?

Any Help?

Thanks.

[Andreas Suurkuusk]

Hi,

I did a quick try to see if I could reproduce your problem, but I didn't
succeed. I will try some more after the weekend.

I understand that you needed a quick reply to your problems, but we received
your first e-mail at 18.01 (CET), and the e-mail about your CPU utilization
problem at 18.39. I responded by e-mail and to the newsgroup at 20.16, which
I think is a pretty quick response, considering it to be after office hour
at Friday night. Currently we have no possibility to offer phone support for
our .NET Memory Profiler, but we always try respond to e-mail support
requests within one business day, and we usually answer them faster.

Best regards,

Andreas Suurkuusk
SciTech Software AB
"Noah Coad [MVP & MCP]" <no**@coad.ne t> skrev i meddelandet
news:eO******** ******@TK2MSFTN GP09.phx.gbl...

Your product does look like a good product, it was probobly a quirk. I
tried e-mailing but didn't get a response back and was distrought there
wasn't a way to contact the company directly via telephone support.

My system is back fine after running the Memory Profiler again,
loading the same application, and closing the Memory Profiler again.

It just took so long to do this because of the system load that I had to use another computer for e-mail and newsgroups. Memory Profiler looks so good
(nice components) that I e-mailed asking what components you use for the
multicolumn list box (I'd still like to know).

-Noah

P.S. For possible debugging purposes, here is the sequence of events:

1. Loaded Memory Profiler
2. "Used Profile Application" and selected a very simple .NET app that I've used for over a year
3. Ran the Process
4. Took a look at some values in M.P.
5. Clicked the 'Stop' button which brought up a dialog asking me if I wanted to end the process.
6. Manually closed the application running
7. M.P. detected the program closed and asked if I wanted to save the
profile infomation (in a dialog on top of the click to stop dialog). I
clicked 'No'
8. Then I clicked the 'Cancel' button on the dialog from step 5.
9. System Load Goes to 90%
10. Closed Memory Profiler

It stopped the heavy system load after repeating steps 1 through 5, but this time allowing M.P. to close the application. The reason this took so long
was that my system was going so slow at this point it took awhile to do
this. The warning message was brisk, my first to ever post such a message, but it was a scare without barely being able to even use the computer to
take M.P out or try to fix it and not being able to get in touch with the
company.

"Andreas Suurkuusk" <an*****@online scitech.se> wrote in message
news:uQ******** ******@TK2MSFTN GP10.phx.gbl...

Hi,

It seems unlikely that our software could cause your system to have 90%
utilization. When installing, we do not add anything that will run on
startup, we just copy files to "C:\Program files\SciTech\N etMemProfiler",

register a
callback dll for profiling and add the icon.

When profiling a standard process this callback dll is only activated when starting the process (using environment variables). For a service or ASP.NET

profiling, it alters a set of registry variables to activate the callback dll.These changes will be restored as soon as the process has been

attached

to the profiler, or when it fails to attach. Additionaly, the profiler

saves

all the changes it has done to the registry, so that they can be restored in

the event of the profiler crashing while attaching. If you have tried to
profile ASP.NET or a service, you can try to start the profiler again.

In case something was left in the registry it will try to restore it at
startup.

Have your tried to uninstall the profiler? Does the high CPU utilization

go

away if you do?

Our profiler has been downloaded by thousands of developers during the

past

year and none has reported anything similar to your problem. I think

that we

should have been given the oppurtunity to solve this problem without you
posting a WARNING message on the newsgroup.
Best regards,

Andreas Suurkuusk
SciTech Software AB


"Noah Coad [MVP & MCP]" <no**@coad.ne t> skrev i meddelandet
news:es******** ******@tk2msftn gp13.phx.gbl...

WARNING!

I just downloaded, installed, and ran this Memory Profiler and now my system

is under a constant unknown 90% utlization. It is running extremely

slow for no apparent reason (no tasks show the utiliztion under Task Manager other than "System"). Even after a reboot the system is running at 80% to

90%!

I can barely use my computer and I have a huge contract due this week! This

is very frustrating... Any recommendations ?

-Noah Coad
Microsoft MVP & MCP
"Rob Tillie" <Ro********@stu dent.tul.edu> wrote in message
news:Os******** ******@TK2MSFTN GP10.phx.gbl...
> You can do this with a profiler:
> http://www.scitech.se/memprofiler/
>
> Greetz,
> -- Rob.
>
> Gustavo Franco wrote:
> > Hi,
> >
> >
> >
> > I did a medium complex application in C#, and in some areas the
> > memory goes up to 60Mb, when I finish I dispose everything and
> > setting everything to null and calling GC.Collect, but the memory
> > never goes below 45MB and I'm pretty sure I'm not allocating that
> > huge amount of memory.
> >
> >
> >
> > Now the question is, are there some kind of tool that allow to me

to > > see what objects are inside of Garbage Collector?. How do I know if I > > freed the resources properly?.
> >
> >
> >
> > If my application looks like is taking 64Mb of ram al the time the
> > users are not going to install it.
> >
> >
> >
> > I need any kind of tool to see the content of the GC.
> >
> >
> >
> > Supposed I have a bug and the application is taking memory and

never > > is released how do I supposed to know what is happening if the GC
> > hide this information?
> >
> >
> >
> > Any Help?
> >
> >
> >
> > Thanks.
>
>

[Eric Gunnerson [MS]]

The runtime has a number of performance counters. If you run "perfmon",
you'll see them. Try ".NET CLR Memory" as the category, and choose something
like "Bytes in all heaps". If you're use taskman to look at memory, it
doesn't necessarily report how much memory you're really using.

--
Eric Gunnerson

Visit the C# product team at http://www.csharp.net
Eric's blog is at http://blogs.gotdotnet.com/ericgu/

This posting is provided "AS IS" with no warranties, and confers no rights.
"Gustavo Franco" <gu************ @hotmail.com> wrote in message
news:Ox******** ******@tk2msftn gp13.phx.gbl...

Hi,

I did a medium complex application in C#, and in some areas the memory goes up to 60Mb, when I finish I dispose everything and setting everything to
null and calling GC.Collect, but the memory never goes below 45MB and I'm
pretty sure I'm not allocating that huge amount of memory.

Now the question is, are there some kind of tool that allow to me to see
what objects are inside of Garbage Collector?. How do I know if I freed the resources properly?.

If my application looks like is taking 64Mb of ram al the time the users are not going to install it.

I need any kind of tool to see the content of the GC.

Supposed I have a bug and the application is taking memory and never is
released how do I supposed to know what is happening if the GC hide this
information?

Any Help?

Thanks.