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From: "Roger Orr" <rogero AT howzatt DOT demon DOT co DOT uk>
To: <cygwin AT cygwin DOT com>
In-Reply-To: <20150224211358.GO437@calimero.vinschen.de>
Subject: RE: slow startup after upgrade
Date: Tue, 24 Feb 2015 23:57:40 -0000
Message-ID: <323066163E624B5D87633D8609D37E9A@Tamar>
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Corinna Vinschen wrote:
> Hi Roger,
> 
> On Feb 24 19:55, Roger Orr wrote:
>> Hello Corinna,
>> It seems slightly faster than the previous patch and I've not
>> noticed a downside yet. 
>> 
>> 
>> CYGWIN_NT-6.1-WOW LCLDN-DEV24 1.7.35s(0.286/5/3) 20150220 15:47:55
>> i686 Cygwin:
>> 
>> ~37ms to run echo.exe from Windows command prompt
>> ~60ms to run .\id.exe -a from Windows command prompt
>> 
>> CYGWIN_NT-6.1-WOW LCLDN-DEV24 1.7.35s(0.286/5/3) 20150223 21:02:38
>> i686 Cygwin:
>> 
>> ~35ms to run echo.exe from Windows command prompt
>> ~53ms to run .\id.exe -a from Windows command prompt
> 
> That's a nice result.
> 
> However, I don't quite understand this result for the older DLL.
> Weren't you reporting >4 secs as startup time from 1.7.35?!? 

The slow (4s) startup was from an early 1.7.35 DLL before that of 20150220.

From an earlier message (2015-02-17):

1) Running cygwin "echo.exe" from a cmd.exe command shell

a) With passwd: files and group: files in /etc/nsswitch.conf
  0.03 - 0.4 s

b) With 1.7.34 and default /etc/nsswitch.conf

  around 120s

C) With 1.7.35 and default /etc/nsswitch.conf

  4.4 - 4.6s

> On another note:
> 
> I just uploaded a new developer snapshot (2015-02-24).  This snapshot
> should improve mkpasswd/mkgroup or, generally speaking, enumerating
> AD accounts, a lot.  Can you give it a try?  
> 
> While you're at it, does the new snapshot still stop after 3.5K
> accounts even though you think there are 8K accounts?  If so, I'd be
> interested to investigate this further.  The reason is, while testing
> my today's performance improvements, I stumbled over a bug in my code
> which also resulted in enumerating less accounts as desired.  So I'm
> not entirely sure your problem isn't related to a bug either.     


I'll try to find time to give this a go too.

> 
> 
> Thanks,
> Corinna


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