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Message-ID: <20020626050638.17205.qmail@web10508.mail.yahoo.com>
Date: Tue, 25 Jun 2002 22:06:38 -0700 (PDT)
From: Rick Rankin <rick_rankin AT yahoo DOT com>
Subject: Re: Executing commands is VERY slow when logged into an NT domain....
To: cygwin AT cygwin DOT com
In-Reply-To: <20020626042741.GA2682@redhat.com>
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--- Christopher Faylor <cgf AT redhat DOT com> wrote:
> On Tue, Jun 25, 2002 at 09:09:43PM -0700, Rick Rankin wrote:
> >Corinna mentioned earlier in this thread that some strace output might be
> >helpful. I've attached two strace logs from running 'ls' in an empty
> directory.
> >The first is using the 1.3.10-1 DLL where don't see the slowdown, the second
> is
> >using the 20020625 snapshot of 1.3.11 where I do. 
> 
> The microsecond numbers in the 1.3.10 vs. 1.3.11 strace show that 1.3.11 is
> actually slightly faster than 1.3.10:
> 
> 1.3.10:
>  1989  180504 [main] ls 436 _pinfo::exit: Calling ExitProcess 0
>        ^^^^^^
> 
> 1.3.11:
>  2447  169876 [main] ls 1480 _pinfo::exit: Calling ExitProcess 0
>        ^^^^^^
> 
> Are you sure you saw a slowdown in this instance?  Because this is
> pretty puzzling if so.  Given the fact that we cleaned up some of
> the startup code in cygwin for 1.3.11, the above figures are what
> I'd expect.
> 

Pretty sure. I also ran 'time ls' right after I ran 'strace ls'. Here are those
results, which I meant to post earlier but forgot. I took these times while I
was logged in to my domain account and connected to my home network, which is
when I see the slowdown.

With released 1.3.10-1 DLL:

$ uname -a
CYGWIN_NT-5.0 az10-x31074 1.3.10(0.51/3/2) 2002-02-25 11:14 i686 unknown

$ time ls

real    0m0.043s
user    0m0.020s
sys     0m0.020s

With released 1.3.11-3 DLL:

$ uname -a
CYGWIN_NT-5.0 az10-x31074 1.3.11(0.53/3/2) 2002-06-23 22:31 i686 unknown

$ time ls

real    0m2.344s
user    0m0.040s
sys     0m0.030s

With 1.3.11s 20020625 snapshot DLL:

$ uname -a
CYGWIN_NT-5.0 az10-x31074 1.3.11s(0.53/3/2) 20020625 11:55:16 i686 unknown

$ time ls

real    0m2.354s
user    0m0.030s
sys     0m0.040s

So for whatever reason, the real time required for ls to do essentially nothing
is 2.3 seconds longer with the 1.3.11 dll than it is with 1.3.10, while user
and system times are more-or-less unchanged.

--Rick


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