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Date: Tue, 20 Mar 2007 17:45:13 -0600
From: "Morgan Gangwere" <0 DOT fractalus AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: slow bash spawn
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well, I have this problem too occasionally.

normally caused if its an SP2 machine. never have this problem on sp1
or noSP. also, if I disable the DLA sysyem, i cant access flash disks.

another thing to think about is, what does bash do with $0 or ARGV[0]
? if it sees its "bash" then its gonna act differently than if its
"sh."


just a thought...



On 3/20/07, Dave Korn <dave DOT korn AT artimi DOT com> wrote:
> On 20 March 2007 08:17, Marc Compere wrote:
>
> > Well, it seems I've found the problem, or at least a big component of
> > the problem.  Turns out it is likely not (directly) related to cygwin
> > code but some other interaction between cygwin and the OS as a result of
> > a Sonic Solutions DLA process running.  DLA apparantly stands for Drive
> > Letter Access Component.  Exact process name is
> > c:\windows\system32\dla\dlactrlw.exe.  Snapshot attached.
> >
> > Being fed up with long XP boot-up times I had downloaded Autoruns and
> > removed many, seemingly unnecessary startup processes and services.
> > Oops, apparantly dlactrlw.exe is necessary for Cygwin to run quickly as
> > usual.  Never would have guessed - still don't quite understand how a
> > Sonic cd burner software (I presume) causes the slow down, but it's
> > pretty repeatable.  5 reboots later there's a 1-to-1 correspondence with
> > this process and fast cygwin bash-related commands, including
> > ./configure and make.
> >
> > bash --login -i -x takes 33 seconds with DLA turned off (via Autoruns
> > checkbox) and takes about 5.5 seconds with this process turned on.  Go
> > figure?
>
>
>   That's most likely the difference between merely disabling one component of
> an application, leaving the remaining ones installed and broken, and properly
> uninstalling it.  Perhaps something that hooks into every process in the
> system is calling out to the DLA component and waiting for a timeout before it
> fails.
>
>   I'll add DLA to the theoretical cygwin-list-of-dodgy-apps.
>
>     cheers,
>       DaveK
> --
> Can't think of a witty .sigline today....
>
>
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-- 
Morgan gangwere

"Space does not reflect society, it expresses it." -- Castells, M.,
Space of Flows, Space of Places: Materials for a Theory of Urbanism in
the Information Age, in The Cybercities Reader, S. Graham, Editor.
2004, Routledge: London. p. 82-93.

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