How to run SnakeViz?

[jiffyclub]

How to run SnakeViz?

[gjuarezh]

I realized what was the problem now. For anyone to whom it may be helpful:

I installed using --user option in pip to avoid using sudo. This didn't install properly, but showed no error messages. To fix it simply uninstall and then install again using sudo.

[jiffyclub]

More recent PRs have added the ability to call SnakeViz via python -m snakeviz name_of_profile, which won't depend on the snakeviz executable being available.

[embray]

@guidojh

I installed using --user option in pip to avoid using sudo. This didn't install properly, but showed no error messages. To fix it simply uninstall and then install again using sudo.

That sounds like an issue with your configuration (and in general "install using sudo" is poor advice). You didn't mention what OS you're using, but pip install --user typically installs into $HOME/.local, and the snakeviz executable will be in $HOME/.local/bin/snakeviz, so you need to make sure that $HOME/.local/bin is on your $PATH if you want to use pip install --user. This is true in general for Python packages and is in no way particular to snakeviz.

[GoingMyWay]

@luofanghao

On MacOS, please check /Users/USER_NAME/Library/Python/PY_VERSION/bin and add this path to $PATH

[embray]

Closing since this is not likely an issue with snakeviz (though it does remind me that we need to replace distribute_setup.py with ez_setup.py).

But feel free to keep posting in this issue so that we can resolve this. First of all, what commands did you run to install snakeviz? Are you able to provide the output that was produced by that command?

[tdgrant1]

Sure. I used easy_install to do it. Here's my output:

$ sudo easy_install snakeviz
Searching for snakeviz
Reading http://pypi.python.org/simple/snakeviz/
Best match: snakeviz 0.1.1
Downloading https://pypi.python.org/packages/source/s/snakeviz/snakeviz-0.1.1.tar.gz#md5=d1a2ae6bd9bea73270d4ca35ad798698
Processing snakeviz-0.1.1.tar.gz
Running snakeviz-0.1.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-8YGQk3/snakeviz-0.1.1/egg-dist-tmp-moq_T_
zip_safe flag not set; analyzing archive contents...
snakeviz.handler: module references file
snakeviz.main: module references file
Adding snakeviz 0.1.1 to easy-install.pth file
Installing snakeviz script to /Volumes/Macintosh HD/Users/Tom/bin

Installed /sw/lib/python2.7/site-packages/snakeviz-0.1.1-py2.7.egg
Processing dependencies for snakeviz
Finished processing dependencies for snakeviz
$ snakeviz helloworld.profile
-bash: snakeviz: command not found

When I enter the interpreter though:

$ python
Python 2.7.5 (default, Oct 30 2013, 21:56:17)
[GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

import snakeviz
dir(snakeviz)
['builtins', 'doc', 'file', 'name', 'package', 'path', 'version', 'version']

Does that help?

[embray]

It does, thanks. I don't know anything about fink, but it appears that it thinks the appropriate place to install scripts to is /Volumes/Macintosh HD/Users/Tom/bin. You need to make sure that path is on your PATH environment variable.

[tdgrant1]

Oh good point. That's funny. That's unlikely to be caused by fink though. It's odd to me that it attempts to install it in my home directory/bin, especially since that directory doesn't exist, nor have I ever seen a program attempt to install it there.

Is there a way to tell it to install it somewhere else? If not I can just edit my path.

[embray]

I'm not sure. Is the /sw/lib/ path a fink thing?

[tdgrant1]

Yes, /sw/ is where fink stores everything.

Does snakeviz require the Apple installed python? I attempted to run snakeviz now that I know where it is and it resulted in a segmentation fault. I think it's conflicting python versions. Fink uses its own version of python and that was actually why I couldn't use RunSnakeRun, because wxPython doesn't like the fink version of python.

[embray]

No, definitely not. Never used the Python from Apple. It's not meant to be used for anything not specific to OSX ;)
Hopefully @jiffyclub can get in on this later since he uses a Mac and I don't. Since snakeviz itself is pure python it's more likely your installation of Tornado (the web server) is screwed up :/

[tdgrant1]

Oh okay. Maybe I'll try and mess with the Tornado install then and see if I can patch things up on my end.

Thanks.

[jiffyclub]

I don't know why that directory is being chosen for the script destination. I haven't used fink in many, many years. But it would be interesting to see whether snakeviz works if you add the script destination directory to your PATH.

[gjuarezh]

Why is this issue closed? How is this not a bug?

It's late 2016 now and I just installed using pip and I see the same problem. It is at least a bug in the documentation that says "install with pip, then run snakeviz". It doesn't work that way.

[luofanghao]

I have same issue with MacOS. I installed using pip but then snakeviz cannot be executed from terminal. And under my $HOME/.local/ there is no folder "bin".

[GoingMyWay]

@embray

I can't agree more, you are right!

[liuyigh]

On MacOS with .pyenv, you may have to restart a new shell session for the bin to be seen. FYI.

[yushuinanrong]

I realized what was the problem now. For anyone to whom it may be helpful:

I installed using --user option in pip to avoid using sudo. This didn't install properly, but showed no error messages. To fix it simply uninstall and then install again using sudo.

You saved my day!

[korbinianbauer]

More recent PRs have added the ability to call SnakeViz via python -m snakeviz name_of_profile, which won't depend on the snakeviz executable being available.

Thanks, this did it for me.