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Date: Mon, 5 Dec 2011 10:20:02 -0600 (CST)
From: Tim McDaniel <tmcd AT panix DOT com>
cc: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: Cygwin slow on x64 systems?
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On Sat, 3 Dec 2011, Buchbinder, Barry wrote:
> Tim McDaniel sent the following at Thursday, December 01, 2011 10:59 AM
>>
>> BLODA is the Big List Of Dodgy Apps, apparently from
>> http://cygwin.com/faq/faq.using.html#faq.using.bloda
>>     44. What applications have been found to interfere with Cygwin?
>>
>> Unless someone has another suggestion, maybe I just have to assume I'm
>> SOL.
>
> If you use bash completion, try not using it.

I Googled for that and found the explanation, that "bash completion"
isn't for ALL completion like I had assumed from the name, but instead
programmable context-sensitive completion.  Removing it did indeed
massively speed up filename completion, which I use all the time.
Many thanks.

> Also, check your PATH.  If you set it as a user windows environmental
> variable, windows may be pre-pending a long "for everyone" PATH.  See
> <http://cygwin.com/faq/faq-nochunks.html#faq.using.path>.  See also
> <http://cygwin.com/faq/faq-nochunks.html#faq.using.slow>.

Thank you very much for the pointers.  Unfortunately, I have not
modified the /etc/profile version of PATH, so it is

$ echo "$PATH"
/usr/local/bin:/usr/bin:/Windows/system32:/Windows:/Windows/System32/Wbem:/Windows/System32/WindowsPowerShell/v1.0:/Program Files/Perforce

# A form for easier readability:
$ echo $PATH | tr ':' '\n'
/usr/local/bin
/usr/bin
/Windows/system32
/Windows
/Windows/System32/Wbem
/Windows/System32/WindowsPowerShell/v1.0
/Program Files/Perforce

And I see slowness even when everything is a bash builtin (except
perhaps for whatever is handling "|" -- I suppose it's forking bash
itself):

$ time echo hi | read x

real    0m1.928s
user    0m0.031s
sys     0m0.031s

-- 
Tim McDaniel, tmcd AT panix DOT com

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