Date: Thu, 14 Jun 2007 11:55:51 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin allocted time slice
Message-ID: <20070614155551.GE16423@ednor.casa1.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <017001c7ae32$49dff3c0$0600a8c0 AT ze4427wm> <20070614034243 DOT GA15091 AT ednor DOT casa1 DOT cgf DOT cx> <006a01c7ae97$7c225cf0$0600a8c0 AT ze4427wm> <467161BB DOT A157E0BC AT dessent DOT net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <467161BB.A157E0BC@dessent.net>
User-Agent: Mutt/1.5.15 (2007-04-06)
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com

On Thu, Jun 14, 2007 at 08:41:47AM -0700, Brian Dessent wrote:
>Aaron Gray wrote:
>
>> Weird I was getting very long compile times for GCC and on using 'time' was
>> getting indications that make was only getting 25% of total system time.
>> 
>> I'll see if it is repeatable on another system.
>
>Hint: Cygwin is slow.
>
>Emulating fork() takes a complicated dance between parent and child.  A
>lot of this involves one waiting for the other to complete a stage of
>initialization.  Thus, a Cygwin process that spawns a lot of children
>does a lot of waiting.  It is a price you pay for being able to compile
>POSIX source unmodified on Windows.
>
>Also, I/O.
>
>Also, Cygwin is around ten years old now, and people have been
>complaining that it's slow for approximately 9 years and 364 days.

Actually, I've been involved with Cygwin for ten years but it is at
least a couple of years older than that.

So that would be a mix of:

1995:
Why is cygwin so slow?

Hey where do I find perl?  I get "command not found"!

Hey why does gcc hang sometimes?  Am I missing a setting?

Why is cygwin so slow?

1996:
Why is cygwin so slow?

Cygwin is great but I sure could use perl.  Is it available?

I notice that when there is a complicated bash script cygwin
seems to hang or error out.  I've tried reinstalling it but that
takes forever.  Do I need to buy more RAM?

Why is cygwin so slow?

1997:
Why is cygwin so slow?

I found perl on an external web site but it is missing package XXX.
Where do I find that?

I notice that sometimes complicated bash scripts hang.  Is it because
I have two CPUs?  Should I reinstall?

I'm using Sergey Okhapkin's version of cygwin.  It seems to fix my
problem but it sure is slow.  Is there a BIOS setting for this?

1998:
B20 rocks!  I wish it wasn's so slow.  Should I defragment my drive?

etc.

cgf

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/