cfis : ruby-prof 0.4.0 with call graphs

Comment on ruby-prof 0.4.0 with call graphs by Paul Findlay

Wed, 21 Jun 2006 21:03:04 -0600

Very cool! Thanks for this.

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Thu, 22 Jun 2006 00:01:56 -0600

No problem Paul, it was fun to do. All feedback and comments are welcome….

Comment on ruby-prof 0.4.0 with call graphs by Jonathan

Thu, 22 Jun 2006 06:15:53 -0600

This looks like a very very useful utility and I’d like to thank you guys for all the effort you already put in.

However I can’t find a way to use the Ruby cmd-line arguments to, for example, add a directory to the loading-list: -I . Or to require a library beforehand with -r

Do you have any plans to add this ruby-prof?

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Thu, 22 Jun 2006 16:18:55 -0600

Hi Jonathon,

ruby-prof right now uses Ruby’s load method to run the specified scripts.

So, not sure if this would work, but you could try:

ruby -S ruby-prof -r(add your stuff) (scripts_to_run)

If that doesn’t work, then check out the profiletask in the lib/ruby-prof directory. You could create a little rake file that would call RubyProf the way you mention.

Let us know what works - and we’d be happy to accept a patch to make this work better with ruby-prof.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Thu, 22 Jun 2006 17:05:38 -0600

I seem to be having problems installing the gem. I’m running Ruby 1.8.2, and it tells me it’s too old. What version does it require?

Btw, what about the 0.4.1 version that shows up, is that stable?

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Thu, 22 Jun 2006 23:24:35 -0600

Haris - We’ve only tested on Ruby 1.8.4. Its plausible it works on 1.8.2 but we didn’t test it so we required 1.8.4. You could try gem install –force ruby-prof and give it a try.

0.4.1 fixes a bug in 0.4.0 that you probably wouldn’t run into, as well as an obvious documentation error. Hopefully is stable.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Thu, 22 Jun 2006 23:39:39 -0600

Thanks for the quick feedback. When I try even with the –force, I get:

Ruby version is too old ERROR: While executing gem … (RuntimeError)

ERROR: Failed to build gem native extension.

I’m basically using the ruby that ships with MacOSX.

I guess I’ll have to wait until I decide to update. Darn though, it looks really cool!

You might want to update the documentation in http://ruby-prof.rubyforge.org/ though, it says that it requires simply 1.8.2 or higher.

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Fri, 23 Jun 2006 00:06:58 -0600

Bummer. If you feel like doing a little more work try a manual install. Download the zip or tar archive and unzip it. Then copy ruby-prof.rb, ruby-prof, and the lib directory to your ruby_site directory. Then copy the ruby_prof.so extension to site_ruby i386-msvcrt (or whatever it is on your platform).

That should do the trick, you can then see it works. Thanks for the tip on the documentation, if I get a chance I’ll install Ruby 1.8.2 and see what happens.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Fri, 23 Jun 2006 01:18:23 -0600

I’m with you until the ruby_prof.so file. I downloaded http://rubyforge.org/frs/download.php/11223/ruby-prof-0.4.1.tgz and unziped it, but I can’t find a .so file. There is a ruby-prof file with no extension on the root directory, and a ruby_prof.c file in the ext folder. Is that the one that’s supposed to give me the .so? I’m not sure how I am supposed to compile it. Also not clear where to place the .so file, what is this directory supposed to be? I’m guessing it should be: /usr/lib/ruby/1.8/powerpc-darwin8.0/ this contains a lot of .bundle items, but no .so items.

Thanks for the help.

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Fri, 23 Jun 2006 01:55:33 -0600

Right, you’re on Linux/unix. Here’s how to compile it:

$ cd ruby-prof/ext

$ gcc -c ruby_prof.o -I/usr/lib/ruby/1.8/i386-linux (that’s a capital i not l)

$ gcc -shared -o ruby_prof.so -lruby ruby_prof.so (and that’s a lowercase l not an i)

That should do the trick. Thanks for your patience.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Fri, 23 Jun 2006 10:51:39 -0600

Thanks for helping out, my compiling skills are I’m afraid limited to ./configure, make, make install.

I am running on MacOSX btw.

I tried to run this command:

gcc -c ruby_prof.o -I/usr/lib/ruby/1.8/powerpc-darwin8.0

which I’m assuming is what you meant, and I got:

powerpc-apple-darwin8-gcc-4.0.0: ruby_prof.o: No such file or directory

In fact the ext directory has only ruby_prof.c

When I tried to run:

gcc -c ruby_prof.c -I/usr/lib/ruby/1.8/powerpc-darwin8.0

instead, I got a whole list of errors starting with:

ruby_prof.c:1027: error: parse error before ‘event’

Btw, my gcc doesn’t seem to have the -I option.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Fri, 23 Jun 2006 11:03:49 -0600

Upon further examination, gcc seems to understand the -I option, even though it doesn’t say so when I do gcc –help. So I decided to search in the directory /usr/lib/ruby/1.8/powerpc-darwin8.0 for the string rb_event_t, and it can’t be found anywhere.

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Fri, 23 Jun 2006 12:33:54 -0600

This was the correct form:

gcc -c ruby_prof.c -I/usr/lib/ruby/1.8/powerpc-darwin8.0

Basically, compile ruby_prof.c to ruby_prof.o. The -I (uppercase i) tells gcc where the Ruby header files are. If it can’t find them, then you’ll get a bunch of errors.

Let me see if this works with Ruby 1.8.2 today….

Comment on ruby-prof 0.4.0 with call graphs by Charlie

Fri, 23 Jun 2006 12:44:23 -0600

Ok - looks like it doesn’t work. I get errors about prof_event_hook not working - which is the main way ruby-prof hooks into Ruby.

After some investigation, I found this:

http://blade.nagaokaut.ac.jp/cgi-bin/vframe.rb/ruby/ruby-talk/131313?131258-132005+split-mode-vertical.

Looks to me that Shugo requested that this function be added to Ruby. In the ruby-prof-0.3.0 build scripts, they require a version of 1.8.2 newer than March 22, 2005. However, Ruby 1.8.2 was released in December 2004.

So it looks to me you’d have to upgrade to 1.8.4. Sorry about that, I’ll fix up the documentation to make that more clear.

Comment on ruby-prof 0.4.0 with call graphs by Haris Skiadas

Fri, 23 Jun 2006 14:36:04 -0600

Oh well, thanks for all the help anyway. I have had other reasons to move up to 1.8.4 anyway, it’s just a question of taking the plunge… Since I didn’t install Ruby in the first place, it just came with the OS, i’m a bit hesitant to install it now. :)

Thanks again and congrats on an awesome tool. It looks great even without using it ;)