Issue with csrss.exe

Hi,

I am facing anissue with windows 2003 server enterprise ed. with sp1
installed.
I am trying to run customer developed network applications for data
transfers on the lan. When these applications/ servers run, csrss.exe's cpu
utilization reaches 90-100 %.

I have confirmed this behavior on multiple systems and also verified that
the apps work fine on xp pro & other o.s.'s There's nothin wrong with the
apps as they were developed using 2003 server itself.

I have checked for viruses, malware/trojans etc. & my systme is clean.

Has anyone seen this before as I don't see any isue as such posted online so
far.

Thanks & Regards,
Karthik Narasimhan

This is the user-mode portion of the Win32 subsystem (with Win32.sys being
the kernel-mode portion). Csrss stands for client/server run-time subsystem
and is an essential subsystem that must be running at all times. Csrss is
responsible for console windows, creating and/or deleting threads, and some
parts of the 16-bit virtual MS-DOS environment. It can be infected by a
virus, check that out. Otherwise check your app. How many threads is it
opening, what is it really doing under the hood? sysinternals.com has great
tools to see what you app is doing.


"Sniper" <(E-Mail Removed)> wrote in message
news:786B807B-1E28-4258-A0E0-(E-Mail Removed)...
> Hi,
>
> I am facing anissue with windows 2003 server enterprise ed. with sp1
> installed.
> I am trying to run customer developed network applications for data
> transfers on the lan. When these applications/ servers run, csrss.exe's
cpu
> utilization reaches 90-100 %.
>
> I have confirmed this behavior on multiple systems and also verified that
> the apps work fine on xp pro & other o.s.'s There's nothin wrong with the
> apps as they were developed using 2003 server itself.
>
> I have checked for viruses, malware/trojans etc. & my systme is clean.
>
> Has anyone seen this before as I don't see any isue as such posted online
so
> far.
>
> Thanks & Regards,
> Karthik Narasimhan

Hi Neteng,

Thanks for the reply. Well I already checked for viruses & yeah the # of
trads being used is just one for me but 7 for the app. i.e uinternally it
uses 7 threads & it's a very simple socket send & receive application that I
am using. nothing complex i this app that might intervene csrss.exe. And
under the hood, something else is calling/accessing csrss.exe internally
which I am unable to find out. I guess it might be o.s internals that i need
to lookout fopr but i am a novice as far as o.s. internals go. Anyways I 'll
check up with sysinternals.co to find out if they got some tools to debug
this issue. & yeah I tried to debug this using vs jit but the system hangs &
it never allows to proceed for the debug.

Thanks again.
from Karthik N

"Neteng" wrote:

> This is the user-mode portion of the Win32 subsystem (with Win32.sys being
> the kernel-mode portion). Csrss stands for client/server run-time subsystem
> and is an essential subsystem that must be running at all times. Csrss is
> responsible for console windows, creating and/or deleting threads, and some
> parts of the 16-bit virtual MS-DOS environment. It can be infected by a
> virus, check that out. Otherwise check your app. How many threads is it
> opening, what is it really doing under the hood? sysinternals.com has great
> tools to see what you app is doing.
>
>
> "Sniper" <(E-Mail Removed)> wrote in message
> news:786B807B-1E28-4258-A0E0-(E-Mail Removed)...
> > Hi,
> >
> > I am facing anissue with windows 2003 server enterprise ed. with sp1
> > installed.
> > I am trying to run customer developed network applications for data
> > transfers on the lan. When these applications/ servers run, csrss.exe's
> cpu
> > utilization reaches 90-100 %.
> >
> > I have confirmed this behavior on multiple systems and also verified that
> > the apps work fine on xp pro & other o.s.'s There's nothin wrong with the
> > apps as they were developed using 2003 server itself.
> >
> > I have checked for viruses, malware/trojans etc. & my systme is clean.
> >
> > Has anyone seen this before as I don't see any isue as such posted online
> so
> > far.
> >
> > Thanks & Regards,
> > Karthik Narasimhan
>
>
>