Re: Old Thread: Cygwin Performance

["Tim Prince" <tprince at computer dot org>]

Thanks, this got it started.  I may be able to try a few runs by the end of
the day.
----- Original Message -----
From: "Ralf Habacker" <Ralf.Habacker@freenet.de>
To: "Cygwin" <cygwin@sources.redhat.com>
Sent: Tuesday, December 04, 2001 7:13 AM
Subject: RE: Old Thread: Cygwin Performance


> > -----Original Message-----
> > From: Tim Prince [mailto:tprince@computer.org]
> > Sent: Sunday, December 02, 2001 10:58 PM
> > To: Ralf Habacker
> > Cc: Cygwin
> > Subject: Re: Old Thread: Cygwin Performance
> >
> >
> > Your patch adds lib_cygwin.c to the list of required source files, yet
that
> > new file is not included.
>
> Sorry, I've only compared the original source files with the patched, so
it fall through.
> It's appended.
>
> > Also, it causes Makefile to invoke the 'get -s' command, of whose
function I am not aware.
>
> I'm not aware too, I have recognized this in the Makefile, but I have
ignored this :-)
> >
> > On my laptop, running linux, the lmbench-2beta2 version corrects a hang
in
> > the "stable version" code which makes a network connection.  Perhaps
that is
> > not supported anyway in your cygwin version.
>
> > ----- Original Message -----
> > From: "Ralf Habacker" <Ralf.Habacker@freenet.de>
> > To: "Tim Prince" <tprince@computer.org>
> > Cc: "Cygwin" <cygwin@sources.redhat.com>
> > Sent: Sunday, December 02, 2001 10:29 AM
> > Subject: RE: Old Thread: Cygwin Performance
> >
> >
> > > > I'd suggest you offer your patch to the lmbench maintainers.  At one
> > time,
> > > > they were talking about supporting something for Windows.  If they
don't
> > > > adopt it, I suppose the other alternative is to offer to maintain a
> > Cygwin
> > > > port as an optional Cygwin package.  I'd certainly like to try your
> > version.
> > >
> > > Perhaps it is the best, that you look at the patch before offering to
the
> > lmbench maintainer.
> > > I should note some things to the patch:
> > >
> > > 1. It emulates rpc functions by adding a file "lib_cygwin.c" which
> > contains empty rcp_...
> > > functions,
> > >    so that the rpc functions are disabled and will not be tested.
> > >
> > > 2. Because the makefile does not have any platform depending parts,
> > generating lat_rpc.exe is
> > > disabled
> > >
> > > 3. in scripts/lmbench I have added some ' echo -n "*" ' to enable
visible
> > feedback for the
> > > long time execution of some benchmarks.
> > >
> > > 4. On problem I have recognized is with the "lat_select", it hangs on
> > operation.
> > >
> > > 5. Because I don't have any compare of lmbench running time on other
> > platforms I can't say if
> > > this is okay. Some benchmarks need several minutes to run, but this
may be
> > okay.
> > >
> > > Regards
> > > Ralf
> > >
> > > > ----- Original Message -----
> > > > From: "Ralf Habacker" <Ralf.Habacker@freenet.de>
> > > > To: "Tim Prince" <tprince@computer.org>
> > > > Cc: "Cygwin" <cygwin@sources.redhat.com>
> > > > Sent: Saturday, December 01, 2001 11:44 AM
> > > > Subject: RE: Old Thread: Cygwin Performance
> > > >
> > > >
> > > > > >
> > > > > > cygwin should have made some improvements in piping since then.
> > Amazing
> > > > the
> > > > > > things I had time to do last year.  At that time, I got over  a
few
> > of
> > > > the
> > > > > > linux specific functions by the use of Chuck Wilson's useful
> > packages,
> > > > some
> > > > > > of which should be integrated into cygwin now.  I commented out
> > sections
> > > > of
> > > > > > lmbench which I couldn't figure out how to port.  This would be
a
> > useful
> > > > > > port, particularly in view of the new performance issues brought
up
> > by
> > > > XP.
> > > > >
> > > > > I have get running lmbench 2.0 on cygwin with some patches
(removing
> > rpc
> > > > functions).
> > > > >
> > > > > Is there anyone who could verify this patch ? To whom should I
send
> > this
> > > > patch ?
> > > > >
> > > > > Regards
> > > > > Ralf
> > > > >
> > > > > > However, several of the organizations involved in lmbench are
trying
> > to
> > > > stay
> > > > > > clear of Bill Gates' vendetta against use of open software
together
> > with
> > > > his
> > > > > > products.  I was not employed by such an organization at the
time I
> > was
> > > > > > beating on lmbench.
> > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Piyush Kumar" <piyush@acm.org>
> > > > > > To: "Cygwin@Cygwin. Com" <cygwin@cygwin.com>
> > > > > > Sent: Friday, November 30, 2001 6:49 AM
> > > > > > Subject: Old Thread: Cygwin Performance
> > > > > >
> > > > > >
> > > > > > >
> > > > > > >
> > > > > > > I picked this old thread from Oct 2000!!!
> > > > > > > Tim reports that cygwin falls short by
> > > > > > > performance compared to linux box by a
> > > > > > > factor of 2 using lmbench. Is it still
> > > > > > > the case? Or have things improved since
> > > > > > > Oct 13(Unlucky date!! ;)??
> > > > > > >
> > > > > > > I was trying to compile lmbench 2.0 (Patch 2)
> > > > > > > on my cygwin , no luck!!!! I couldnt compile it!
> > > > > > > Anyone here has tried it before ?? Any luck?
> > > > > > > I would be really interested in a lmbench port
> > > > > > > on cygwin! If someone has already done it , please
> > > > > > > let me know!
> > > > > > >
> > > > > > > Thanks,
> > > > > > > --Piyush
> > > > > > >
> > > > > > >
> > > > > > >
=============================================================An
> > Old
> > > > Thread
> > > > > > >
> > > > > > > Re: Cygwin Performance Info
> > > > > > > To: <cygwin at sourceware dot cygnus dot com>, "Chris Abbey"
> > <cabbey
> > > > at
> > > > > > > chartermi dot net>
> > > > > > > Subject: Re: Cygwin Performance Info
> > > > > > > From: "Tim Prince" <tprince at computer dot org>
> > > > > > > Date: Fri, 13 Oct 2000 19:12:40 -0700
> > > > > > > References:
> > <4.3.2.7.0.20001013184237.00b6cd70@pop.bresnanlink.net>
> > > > > > >
> > > > > >
> > > >
> >
> --------------------------------------------------------------------------
> > > > > > --
> > > > > > > ----
> > > > > > >
> > > > > > > When I attempted to run lmbench on this old box both under
linux
> > and
> > > > cygwi
> > > > > > n,
> > > > > > > there were some tests on which cygwin/w2k fell short of linux
by a
> > > > factor
> > > > > > of
> > > > > > > 2 or more (opening files, pipe throughput, and the like), and
then
> > > > there
> > > > > > > were the cache statistics on which cygwin beat linux by a
small
> > > > margin.  I
> > > > > > > was expecting lmbench to become better adapted to cygwin, but
I
> > have
> > > > no
> > > > > > news
> > > > > > > there.
> > > > > > > ----- Original Message -----
> > > > > > > From: "Chris Abbey" <cabbey@chartermi.net>
> > > > > > > To: <cygwin@sourceware.cygnus.com>
> > > > > > > Sent: Friday, October 13, 2000 4:51 PM
> > > > > > > Subject: Re: Cygwin Performance Info
> > > > > > >
> > > > > > >
> > > > > > > > At 19:23 10/13/00 -0400, Laurence F. Wood wrote:
> > > > > > > > >Can someone tell me where the performance hit is in cygwin
unix
> > > > > > > > >emulation?
> > > > > > > >
> > > > > > > > whichever part you use the most inside your tightest inner
loop.
> > > > > > > >
> > > > > > > > seriously.
> > > > > > > >
> > > > > > > > that's a big huge open ended question (not about cygwin,
about
> > ANY
> > > > > > > > library/platform) that is as specific to your application as
you
> > can
> > > > > > > > get. For example, if you spend 75% of your computing day
> > > > manipulating
> > > > > > > > text files and piping them and greping them and running file
> > utils
> > > > > > > > against them then the cr/lf translation may be a big hit for
> > you.
> > > > > > > > On the otherhand if most of your computation in a day is
spent
> > > > answering
> > > > > > > > requests that come in on tcp/ip sockets then the remapping
of
> > > > winsock
> > > > > > > > to netinet.h functions maybe your major headache. (note, I'm
not
> > > > trying
> > > > > > > > to imply that either function has a performance problem,
merely
> > that
> > > > > > they
> > > > > > > > would be representative places that would have high
invocation
> > > > counts
> > > > > > > > in the course of the given activity.)
> > > > > > > >
> > > > > > > > To really answer that for your application/workload then you
> > need to
> > > > > > > > get some form of performance detailing that can tell you how
> > much
> > > > time
> > > > > > > > you are spending in any given method and how often it's
called.
> > > > > > > >
> > > > > > > >
> > > > > > > > --
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> > > > > > > > Send a message to cygwin-unsubscribe@sourceware.cygnus.com
> > > > > > >
> > > > > > >
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