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McAfee impacting performance


I see a huge performance hit with McAfee VirusScan 4.5.
I know that the FAQ lists a problem with the .tar.gz files,
but this occurs even when doing an 'ls' on any directory.  
NT's task manager shows that the program mcshield.exe is
really hogging the cpu.  I have gotten around the problem by
disable scanning in / (which is D:\cygwin).  But I would like
an explanation as to what is going on.  

/bin/time -v ls -l /usr/bin shows a wall clock time of 50 seconds if
Mcafee is on!  Compare that to 4.5 seconds with it disabled in D:\cygwin,
which still seems ridiculously long, but better than 50+ seconds.

I would appreciate an explanation of this.  

Thanks.

cygcheck -s -v gives:

 Cygnus Win95/NT Configuration Diagnostics
 Current System Time: Fri Oct 13 09:15:34 2000

 WinNT Ver 4.0 build 1381 Service Pack 6

 Path:   /usr/local/bin
         /usr/bin
         /usr/bin
         /cygdrive/d/DevStudio/SharedIDE/BIN
         /cygdrive/d/DevStudio/DF/BIN
         /cygdrive/d/DevStudio/VC/BIN
         /cygdrive/c/WINNT/system32
         /cygdrive/c/WINNT
         /cygdrive/d/Symantec/pcAnywhere
         .

 SysDir: C:\WINNT\System32
 WinDir: C:\WINNT

 HOME = `/home/rick'
 MAKE_MODE = `unix'
 PWD = `/usr/bin'
 USER = `rick'

 !C: = `C:\WINNT\Profiles\rick\Desktop'
 !D: = `D:\cygwin\bin'
 CDPATH = `.:..:/home/rick'
 CLASSPATH = `D:\Exceed\hcljrcsv.jar;D:\Exceed\;'
 COMPUTERNAME = `XANDER'
 COMSPEC = `C:\WINNT\system32\cmd.exe'
 CPU = `i386'
 HOMEDRIVE = `C:'
 HOMEPATH = `\'
 HOSTNAME = `XANDER'
 HOSTTYPE = `i586'
 INCLUDE = `D:\DevStudio\DF\INCLUDE;D:\DevStudio\VC\INCLUDE'
 LIB = `D:\DevStudio\DF\LIB;D:\DevStudio\VC\LIB'
 LOGONSERVER = `\\XANDER'
 MACHTYPE = `i586-pc-cygwin'
 NUMBER_OF_PROCESSORS = `2'
 OLDPWD = `/home/rick'
 OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
 OS = `Windows_NT'
 OSTYPE = `cygwin'
 PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
 PROCESSOR_ARCHITECTURE = `x86'
 PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 3, GenuineIntel'
 PROCESSOR_LEVEL = `6'
 PROCESSOR_REVISION = `0803'
 PROMPT = `$P$G'
 PS1 = ``hostname | tr [A-Z] [a-z]`% '
 PS4 = `[$LINENO]  '
 SHELL = `/bin/sh'
 SHLVL = `1'
 SYSTEMDRIVE = `C:'
 SYSTEMROOT = `C:\WINNT'
 TEMP = `/cygdrive/c/TEMP'
 TERM = `cygwin'
 USERDOMAIN = `XANDER'
 USERNAME = `rick'
 USERPROFILE = `C:\WINNT\Profiles\rick'
 WINDIR = `C:\WINNT'
 _ = `/usr/bin/cygcheck'

Use `-r' to scan registry

a:  fd           N/A    N/A
c:  hd  NTFS    3357Mb  46% CP CS UN PA FC
d:  hd  NTFS    7499Mb   6% CP CS UN PA FC
e:  hd  NTFS    6502Mb   1% CP CS UN PA FC
f:  cd           N/A    N/A

D:\cygwin\bin  /usr/bin  system  binmode
D:\cygwin\lib  /usr/lib  system  binmode
D:\cygwin  /        system  binmode
E:\home  /home    system  binmode

Found: .\bash.exe
Found: D:\cygwin\bin\bash.exe
Warning: .\bash.exe hides D:\cygwin\bin\bash.exe
Found: .\cat.exe
Found: D:\cygwin\bin\cat.exe
Warning: .\cat.exe hides D:\cygwin\bin\cat.exe
Found: .\cpp.exe
Found: D:\cygwin\bin\cpp.exe
Warning: .\cpp.exe hides D:\cygwin\bin\cpp.exe
Found: .\find.exe
Found: D:\cygwin\bin\find.exe
Warning: .\find.exe hides D:\cygwin\bin\find.exe
Found: .\gcc.exe
Found: D:\cygwin\bin\gcc.exe
Warning: .\gcc.exe hides D:\cygwin\bin\gcc.exe
Found: .\gdb.exe
Found: D:\cygwin\bin\gdb.exe
Warning: .\gdb.exe hides D:\cygwin\bin\gdb.exe
Found: .\ld.exe
Found: D:\cygwin\bin\ld.exe
Warning: .\ld.exe hides D:\cygwin\bin\ld.exe
Found: .\ls.exe
Found: D:\cygwin\bin\ls.exe
Warning: .\ls.exe hides D:\cygwin\bin\ls.exe
Found: .\make.exe
Found: D:\cygwin\bin\make.exe
Warning: .\make.exe hides D:\cygwin\bin\make.exe
Found: .\sh.exe
Found: D:\cygwin\bin\sh.exe
Warning: .\sh.exe hides D:\cygwin\bin\sh.exe

   83k 2000/06/11 .\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
                  "cygitcl30.dll" v0.0 ts=2000/6/10 21:34
   35k 2000/06/11 .\cygitk30.dll - os=4.0 img=1.0 sys=4.0
                  "cygitk30.dll" v0.0 ts=2000/6/10 21:34
  402k 2000/06/11 .\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtcl80.dll" v0.0 ts=2000/6/10 21:30
    5k 2000/06/11 .\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
   10k 2000/06/11 .\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtclreg80.dll" v0.0 ts=2000/6/10 21:30
  639k 2000/06/11 .\cygtk80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtk80.dll" v0.0 ts=2000/6/10 21:34
  586k 2000/08/04 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2000/8/3 18:53
    Cygwin DLL version info:
        dll major: 1001
        dll minor: 4
        dll epoch: 19
        dll bad signal mask: 19005
        dll old termios: 5
        api major: 0
        api minor: 26         shared data: 3
         dll identifier: cygwin1
         mount registry: 2
         cygnus registry name: Cygnus Solutions
         cygwin registry name: Cygwin
         program options name: Program Options
         cygwin mount registry name: mounts v2
         build date: Thu Aug 3 20:53:46 EDT 2000
         CVS tag: cygwin-1-1-4
         shared id: cygwin1S3

    83k 2000/06/11 .\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
                   "cygitcl30.dll" v0.0 ts=2000/6/10 21:34
    35k 2000/06/11 .\cygitk30.dll - os=4.0 img=1.0 sys=4.0
                   "cygitk30.dll" v0.0 ts=2000/6/10 21:34
   402k 2000/06/11 .\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtcl80.dll" v0.0 ts=2000/6/10 21:30
     5k 2000/06/11 .\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
    10k 2000/06/11 .\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtclreg80.dll" v0.0 ts=2000/6/10 21:30
   639k 2000/06/11 .\cygtk80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtk80.dll" v0.0 ts=2000/6/10 21:34
   586k 2000/08/04 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                   "cygwin1.dll" v0.0 ts=2000/8/3 18:53
     Cygwin DLL version info:
         dll major: 1001
         dll minor: 4
         dll epoch: 19
         dll bad signal mask: 19005
         dll old termios: 5
         api major: 0
         api minor: 26
         shared data: 3
         dll identifier: cygwin1
         mount registry: 2
         cygnus registry name: Cygnus Solutions
         cygwin registry name: Cygwin
         program options name: Program Options
         cygwin mount registry name: mounts v2
         build date: Thu Aug 3 20:53:46 EDT 2000
         CVS tag: cygwin-1-1-4
         shared id: cygwin1S3

    83k 2000/06/11 D:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
                   "cygitcl30.dll" v0.0 ts=2000/6/10 21:34
    35k 2000/06/11 D:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
                   "cygitk30.dll" v0.0 ts=2000/6/10 21:34
   402k 2000/06/11 D:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtcl80.dll" v0.0 ts=2000/6/10 21:30
     5k 2000/06/11 D:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
    10k 2000/06/11 D:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtclreg80.dll" v0.0 ts=2000/6/10 21:30
   639k 2000/06/11 D:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
                   "cygtk80.dll" v0.0 ts=2000/6/10 21:34
   586k 2000/08/04 D:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                   "cygwin1.dll" v0.0 ts=2000/8/3 18:53
     Cygwin DLL version info:
         dll major: 1001
         dll minor: 4
         dll epoch: 19
         dll bad signal mask: 19005
         dll old termios: 5
         api major: 0
         api minor: 26
         shared data: 3
         dll identifier: cygwin1
         mount registry: 2
         cygnus registry name: Cygnus Solutions
         cygwin registry name: Cygwin
         program options name: Program Options
         cygwin mount registry name: mounts v2
         build date: Thu Aug 3 20:53:46 EDT 2000
         CVS tag: cygwin-1-1-4
         shared id: cygwin1S3



Rick Rauenzahn
MS B216
LANL
Los Alamos, NM 87545
505-665-4990
rick@lanl.gov


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