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Subject: Re: Bash / cygwin process spawning (?) performance very slow
To: cygwin AT cygwin DOT com
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From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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Date: Thu, 24 Sep 2015 20:44:38 +0200
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On 24/09/2015 19:46, Lee wrote:
> On 9/24/15, litter wrote:
>>> On 24/09/2015 11:57, litter wrote:
>>>> Obviously something is. The FAQ entry does not mention performance, but
>>>> real failures.
>>>> How to further diagnose this?
>>
>> I took the plunge and spent almost a full day trying to find the cause.
>      ... snip ...
>> turns out that Comodo Firewall (Free version) loads a DLL in each process
>> that is the cause of the delay.
>      ... snip ...
>> (although it would have been nice if there was an easier way to diagnose it,
>> maybe with tracing?)

Tracing may report it as at process load is reporting
the loaded dll's

--- Process 7380 loaded C:\Windows\System32\ntdll.dll at 0000000077360000
--- Process 7380 loaded C:\Windows\System32\kernel32.dll at 0000000077240000
--- Process 7380 loaded C:\Windows\System32\KernelBase.dll at 
000007FEFDB20000
--- Process 7380 loaded C:\Windows\System32\sysfer.dll at 0000000074B40000
--- Process 7380 loaded E:\cygwin64\bin\cygwin1.dll at 0000000180040000
--- Process 7380 loaded E:\cygwin64\bin\cygiconv-2.dll at 00000003C2700000
--- Process 7380 loaded E:\cygwin64\bin\cygintl-8.dll at 00000003BEC90000
--- Process 7380 loaded E:\cygwin64\bin\cygncursesw-10.dll at 
00000003BD880000
--- Process 7380 loaded E:\cygwin64\bin\cygreadline7.dll at 00000003B5FD0000
--- Process 7380 loaded C:\Windows\System32\user32.dll at 0000000076C60000
--- Process 7380 loaded C:\Windows\System32\gdi32.dll at 000007FEFEBE0000
--- Process 7380 loaded C:\Windows\System32\lpk.dll at 000007FEFF3C0000
--- Process 7380 loaded C:\Windows\System32\usp10.dll at 000007FEFF500000
--- Process 7380 loaded C:\Windows\System32\msvcrt.dll at 000007FEFF5D0000


> If you use http://www.dependencywalker.com/ on bash.exe with view/full
> paths enabled, does the Comodo Firewall dll stand out or is it just
> another .dll loaded from windows\system32?

unlikely to appear as it is not a dependency but an injected dll

>
> Regards,
> Lee

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