Running tasklist /m in cygwin hangs

[Marco Atzeri]

On 4/18/2015 1:05 AM, Andrey Repin wrote:
> Greetings, Marco Atzeri!
>
>>> I can confirm it still hangs for me with 1.7.35. I am using the 32 bit (i686) Cygwin which is the only difference from Andrey's.
>>>
>
>> on  $ uname -vrsm
>> CYGWIN_NT-6.1-WOW 1.7.35(0.287/5/3) 2015-03-04 12:07 i686
>
>> It is only a bit slow (both mintty and console)
>
>> $ time tasklist /m normaliz.DLL
>
>> Image Name                     PID Modules
>> ========================= ========
>> ============================================
>> ZenworksWindowsService.ex     1424 normaliz.dll
>> AppleMobileDeviceService.     1616 normaliz.dll
>> explorer.exe                  2520 normaliz.dll
>> PanGPS.exe                    3276 normaliz.dll
>> PanGPA.exe                    3420 normaliz.dll
>> iTunesHelper.exe              3544 normaliz.dll
>> Smc.exe                       5008 normaliz.dll
>
>> real    1m25.565s
>
> Oh... wow...
>
> real    0m0.088s
>
> [x].[x]
>
>> user    0m0.015s
>> sys     0m0.046s
>
>> It seems some type of timeout in the interaction of this
>> windows utility and cygwin
>
> Was it native console or pty ?
>

on 32bit cygwin on 64bit W7
cmd+bash and mintty+bash have the same long time.

As the effect is around 10 sec per line and "tasklist.exe" is looking
which process is using a certain dll, I presume that there is a negative
interactions (timeout, double sleep ?).

cmd alone or 64 bit cygwin has no delay effect.

However on 64bit you can compare

/cygdrive/c/windows/SysWOW64/tasklist.exe /m normaliz.dll
/cygdrive/c/windows/System32/tasklist.exe /m normaliz.dll

timing ;-)

Regards
Marco

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