# Ruby Script Under performance in CYGWIN environment **URL:** \ **Category:** Ruby\ **Created:** [January 28, 2008, 4:10am UTC](https://www.ruby-forum.com/t/ruby-script-under-performance-in-cygwin-environment/127314 "2008-01-28T04:10:53Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ankit](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/cab0a1/32.png) [@ankit](https://www.ruby-forum.com/u/ankit)\ **Post date:** [January 28, 2008, 4:10am UTC](https://www.ruby-forum.com/t/ruby-script-under-performance-in-cygwin-environment/127314/1 "2008-01-28T04:10:53Z")
Hi, I have written one ruby script to execute the regression testcases. There are more than five thousand of testcases to be run daily. For Linux, the performance was ok and on expected line but on CYGWIN shell, the script is taking a lot more time ( I would say almost double of time) in running the same testcases as compared to similar script written in perl. Is ruby under performance is related and specific to cygwin shell or is ruby not meant at all to be run on windows and this is known performance issue? I am using the following : CYGWIN\_NT-5.1 and ruby 1.8.4 regards, Ankit ---
**Author:** ![ankit](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/cab0a1/32.png) [@ankit](https://www.ruby-forum.com/u/ankit)\ **Post date:** [January 28, 2008, 6:25pm UTC](https://www.ruby-forum.com/t/ruby-script-under-performance-in-cygwin-environment/127314/2 "2008-01-28T18:25:41Z")
On 28.01.2008 05:02, M. Edward (Ed) Borasky wrote: > ankit wrote: > > > I have written one ruby script to execute the regression testcases. > > There are more than five thousand of testcases to be run daily. What do these test cases do? Is there any IO involved other than reading the code? What else is going on on that box? Is it similar hardware? … > > For Linux, the performance was ok and on expected line but on CYGWIN > > shell, the script is taking a lot more time ( I would say almost > > double of time) in running the same testcases as compared to similar > > script written in perl. > > > > Is ruby under performance is related and specific to cygwin shell or > > is ruby not meant at all to be run on windows and this is known > > performance issue? Of course it is meant to be run on Windows - otherwise there would be no point in having a cygwin package, would it? I am running my Ruby scripts on cygwin for quite some time now and do not encounter any issues. > > I am using the following : CYGWIN\_NT-5.1 and ruby 1.8.4 Since you are giving no hard facts its difficult to answer. I tend to believe that the cygwin version might be slower but haven’t measured myself and certainly would not expect a factor of two on the same hardware. /Did/ you test on the same hardware? First of all I would to some measurements to have hard facts. Maybe a simple command line loop like Robert@Babelfish2 ~ $ ruby -e ‘t=Time.now;5\_000\_000.times {};p(Time.now-t)’ 2.031 > 1.8.4 you have now. > I doubt that the OP will be satisfied with a 10% improvement. Btw, the > current version is not 1.8.4: Robert@Babelfish2 ~ $ ruby -v ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-cygwin] Robert@Babelfish2 ~ $ uname -a CYGWIN\_NT-5.1 Babelfish2 1.5.25(0.156/4/2) 2007-12-14 19:21 i686 Cygwin Kind regards robert ---
**Author:** ![ankit](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/cab0a1/32.png) [@ankit](https://www.ruby-forum.com/u/ankit)\ **Post date:** [January 28, 2008, 5:03am UTC](https://www.ruby-forum.com/t/ruby-script-under-performance-in-cygwin-environment/127314/3 "2008-01-28T05:03:07Z")
ankit wrote: > Is ruby under performance is related and specific to cygwin shell or > is ruby not meant at all to be run on windows and this is known > performance issue? > > I am using the following : CYGWIN\_NT-5.1 and ruby 1.8.4 > > regards, > Ankit Download the Ruby source (1.8.6) and recompile it on Cygwin using the following CFLAGS export CFLAGS=’-O3 -march=’ For example, if you’re running a Pentium 4, do export CFLAGS=’-O3 -march=pentium4’ That will give you at least a 10 percent improvement over the base Ruby 1.8.4 you have now. ---
**Author:** ![ankit](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/cab0a1/32.png) [@ankit](https://www.ruby-forum.com/u/ankit)\ **Post date:** [January 28, 2008, 8:44pm UTC](https://www.ruby-forum.com/t/ruby-script-under-performance-in-cygwin-environment/127314/4 "2008-01-28T20:44:52Z")
Robert K. wrote: > I doubt that the OP will be satisfied with a 10% improvement. Btw, the > current version is not 1.8.4: > > Robert@Babelfish2 ~ > $ ruby -v > ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-cygwin] I suspected that but didn’t have my Cygwin system handy. The operative factor here is that “i386”. I have no idea what compiler the Cygwin people used to build that Ruby or what optimization flags they used, but I do know that i386 is the lowest common denominator. That is unfortunately also the case for RHEL, Debian and Ubuntu, and probably also the case for Fedora. I think the One-Click installer has more optimization.