Slow Debugger

[Andrew Bullock]

Hi,

I had this problem before I reinstalled Windows XP SP2 (fully patched),
but I cant remember what I had to do to fix it :(

I have a loop which scans every pixel in a series of images. When
compiled it completes 10 images in about 6 seconds, which is acceptable
and as expected.

When i run it through VS it does about 1 frame every 10 seconds.
Obviously it should be slightly slower, but not this bad!
Ive tried turning off "edit and continue" but that doesnt make a difference.
Can anyone offer any other suggestions?

My VS setup is as default, I've not changed any other settings.

Thanks,

Regards

Andrew

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

"Andrew Bullock" <an************ *********@ANDnt lworldTHIS.com> wrote in
message news:L3******** **********@news fe4-gui.ntli.net...

I have a loop which scans every pixel in a series of images. When compiled
it completes 10 images in about 6 seconds, which is acceptable and as
expected.

When i run it through VS it does about 1 frame every 10 seconds. Obviously
it should be slightly slower, but not this bad!>
Ive tried turning off "edit and continue" but that doesnt make a
difference.
Can anyone offer any other suggestions?

My VS setup is as default, I've not changed any other settings.

DO you have any conditional breakpoint ?
Ctrl + ALT + B show you all your breakpoints, try to disable all

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

[Andrew Bullock]

Ignacio Machin ( .NET/ C# MVP ) wrote:

Hi,
DO you have any conditional breakpoint ?
Ctrl + ALT + B show you all your breakpoints, try to disable all

No I dont have any.

Since posting I found that it was reporting something along the lines of
"another debugger is handling JIT debugging, repair VS"

So I just have, and its made no difference :(
Andrew

[Vadym Stetsyak]

Hello, Andrew!

AB> Can anyone offer any other suggestions?

AB> My VS setup is as default, I've not changed any other settings.

Just a hint, maybe there are old breakpoints in the application?

( http://blogs.msdn.com/matt_pietrek/a...07/501274.aspx ) - for details

--
Regards, Vadym Stetsyak
www: http://vadmyst.blogspot.com

[Andrew Bullock]

Vadym Stetsyak wrote:

Hello, Andrew!

AB> Can anyone offer any other suggestions?

AB> My VS setup is as default, I've not changed any other settings.

Just a hint, maybe there are old breakpoints in the application?

( http://blogs.msdn.com/matt_pietrek/a...07/501274.aspx ) - for details

--
Regards, Vadym Stetsyak
www: http://vadmyst.blogspot.com

Hi,

Thanks for the advice, but I dont have any breakpoints!

I have had 2003 and C# Express installed before, and ive found a
Microsoft post about this causing problems, but ive not got any of the
symptoms they suggested.

I have uninstalled the old versions, and repaired 2k5 but it hasnt fixed
anything.

Will removing 2k5 and reinstalling make any difference or do I have to
do all of Windows again?

I've tried disabling the VS Hosting process, Ive not got any
breakpoints, Im not getting the debug to Optimise code, im not allowing
unsafe code or unmanaged debugging.

Im getting really mad with this please can someone help!!!

Thanks

Andrew

[Willy Denoyette [MVP]]

What's the size of these images, how much memory do you have available in
your system, what's the memory consumption when you run this from within VS
and from the shell?
How's the performane when running the debug build from the shell (explorer
or command line)?

Willy.
"Andrew Bullock" <an************ *********@ANDnt lworldTHIS.com> wrote in
message news:ru******** *********@newsf e6-gui.ntli.net...
| Vadym Stetsyak wrote:
| > Hello, Andrew!
| >
| > AB> Can anyone offer any other suggestions?
| >
| > AB> My VS setup is as default, I've not changed any other settings.
| >
| > Just a hint, maybe there are old breakpoints in the application?
| >
| > ( http://blogs.msdn.com/matt_pietrek/a...07/501274.aspx ) -
for details
| >
| > --
| > Regards, Vadym Stetsyak
| > www: http://vadmyst.blogspot.com
|
|
| Hi,
|
| Thanks for the advice, but I dont have any breakpoints!
|
| I have had 2003 and C# Express installed before, and ive found a
| Microsoft post about this causing problems, but ive not got any of the
| symptoms they suggested.
|
| I have uninstalled the old versions, and repaired 2k5 but it hasnt fixed
| anything.
|
| Will removing 2k5 and reinstalling make any difference or do I have to
| do all of Windows again?
|
| I've tried disabling the VS Hosting process, Ive not got any
| breakpoints, Im not getting the debug to Optimise code, im not allowing
| unsafe code or unmanaged debugging.
|
| Im getting really mad with this please can someone help!!!
|
| Thanks
|
| Andrew

[Andrew Bullock]

Willy Denoyette [MVP] wrote:

What's the size of these images, how much memory do you have available in
your system, what's the memory consumption when you run this from within VS
and from the shell?
How's the performane when running the debug build from the shell (explorer
or command line)?

Willy.

Each image is 720x560.
My system has 512Mb Ram, with a 1Gb fixed page.

When running the debug .exe from the command prompt, it loads 11 images
and scans them in 6s, the memory usage goes from 19Mb to 85Mb.

When running through VS it takes 165s and the memory usage goes from 20
to 56Mb.

Can i re-iterate that this never used to happen (I haven't changed the
code), only since I reinstalled Windows XP SP2 Fully Patched and went
from C# Express 2005 Beta 2 to C# (VS) 2005.

In my current install of windows, i... Installed VS 2k5, Installed VS
2k3, uninstalled 2k3, installed C# 2k5 Express (not beta 2), uninstalled
express, repaired 2k5.

I'll reinstall windows if it will fix it, but id like to try everything
else first.


Thanks

Andrew

[Willy Denoyette [MVP]]

Ok, but that's the memory taken by your application only, right?. Can you
look at the total memory consumption when run from VS? In short, I'm trying
to be sure there is no paging happening when run from VS as I see no other
reason for the enormous slow down.
You should aslo watch the other processes CPU usage with perfmon, other
processes (also VS) should not consume (at least not visible) CPU cycles
when this application runs.

Willy.
"Andrew Bullock" <an************ *********@ANDnt lworldTHIS.com> wrote in
message news:BW******** ********@newsfe 3-gui.ntli.net...
| Willy Denoyette [MVP] wrote:
| > What's the size of these images, how much memory do you have available
in
| > your system, what's the memory consumption when you run this from within
VS
| > and from the shell?
| > How's the performane when running the debug build from the shell
(explorer
| > or command line)?
| >
| > Willy.
|
|
| Each image is 720x560.
| My system has 512Mb Ram, with a 1Gb fixed page.
|
| When running the debug .exe from the command prompt, it loads 11 images
| and scans them in 6s, the memory usage goes from 19Mb to 85Mb.
|
| When running through VS it takes 165s and the memory usage goes from 20
| to 56Mb.
|
| Can i re-iterate that this never used to happen (I haven't changed the
| code), only since I reinstalled Windows XP SP2 Fully Patched and went
| from C# Express 2005 Beta 2 to C# (VS) 2005.
|
| In my current install of windows, i... Installed VS 2k5, Installed VS
| 2k3, uninstalled 2k3, installed C# 2k5 Express (not beta 2), uninstalled
| express, repaired 2k5.
|
| I'll reinstall windows if it will fix it, but id like to try everything
| else first.
|
|
|
|
| Thanks
|
| Andrew

[Andrew Bullock]

Willy Denoyette [MVP] wrote:

Ok, but that's the memory taken by your application only, right?. Can you
look at the total memory consumption when run from VS? In short, I'm trying
to be sure there is no paging happening when run from VS as I see no other
reason for the enormous slow down.
You should aslo watch the other processes CPU usage with perfmon, other
processes (also VS) should not consume (at least not visible) CPU cycles
when this application runs.

Willy.

When run from shell:

before opening: PF Usage is at 377MB
After opening: PF goes to 390Mb

When i click "run" in my program:
In perf mon the "% Proc Time" is at an avg of about 88 for the 6s of
running time.
the Pages/sec line is at 100 for the duration of the operation.
The average disc cue length is at about 4400 for the duration.

When run through VS:
When i start the program PF usages goes from 377 to 395 and in perfmon
the pages/sec line jumps to 90 and stays there for about 30s until it
drops off to 0.

When i click "run" there is a pagefile spike to 100 each time it loads
an image and a 5000 disc cue length. Processor usage is at 100% all the time

Is this enough information? Please tell me what else i can give you to
help diagnose this issue.

Thanks

Andrew

[Willy Denoyette [MVP]]

Scaring, the number of Pages/Sec is extremely high, that means there is
memory trashing (extreme paging).
What's the value of the Memory' 'Committed bytes' and the 'Available Bytes'
counter?
What else do you have running on this box? What are these processes
consuming in terms of committed bytes?

Willy.
"Andrew Bullock" <an************ *********@ANDnt lworldTHIS.com> wrote in
message news:pA******** **********@news fe7-win.ntli.net...
| Willy Denoyette [MVP] wrote:
| > Ok, but that's the memory taken by your application only, right?. Can
you
| > look at the total memory consumption when run from VS? In short, I'm
trying
| > to be sure there is no paging happening when run from VS as I see no
other
| > reason for the enormous slow down.
| > You should aslo watch the other processes CPU usage with perfmon, other
| > processes (also VS) should not consume (at least not visible) CPU cycles
| > when this application runs.
| >
| > Willy.
| >
|
|
|
| When run from shell:
|
| before opening: PF Usage is at 377MB
| After opening: PF goes to 390Mb
|
| When i click "run" in my program:
| In perf mon the "% Proc Time" is at an avg of about 88 for the 6s of
| running time.
| the Pages/sec line is at 100 for the duration of the operation.
| The average disc cue length is at about 4400 for the duration.
|
|
|
| When run through VS:
|
|
| When i start the program PF usages goes from 377 to 395 and in perfmon
| the pages/sec line jumps to 90 and stays there for about 30s until it
| drops off to 0.
|
| When i click "run" there is a pagefile spike to 100 each time it loads
| an image and a 5000 disc cue length. Processor usage is at 100% all the
time
|
| Is this enough information? Please tell me what else i can give you to
| help diagnose this issue.
|
| Thanks
|
| Andrew