msherry / nose-cprof Goto Github PK

cProfile plugin for nose

Python 100.00%

nose-cprof's Introduction

nose-cprof

A plugin to use cProfile to profile nosetests, rather than the built-in Hotshot profiler.

Profiling tests can help track down sources of performance issues in code, especially if a synthetic test can be created to focus on the area of concern.

The output generated by this plugin can easily be browsed using pstats_viewer, or any other pstats-compatible viewer.

Getting started

Prerequisites

This is a plugin for nose, so it's useless without that installed.

Installation

pip install nose-cprof

Usage

This plugin adds some new options to nosetests:

--with-cprofile       Enable plugin cProfiler:  Use this plugin to run tests
                      using the cProfile profiler.  [NOSE_WITH_CPROFILE]
--cprofile-stats-file=FILE
                      Output file name; default "stats.dat"
--cprofile-stats-erase
                      Erase previously-collected profiling statistics before
                      run. Without this option, new profiling stats will be
                      merged with the prior contents of the output file.

nose-cprof's People

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mjkillough venmo liv42da 0k fatelei

nose-cprof's Issues

Accumulating cProfile stats between runs

I'm looking for a way to accumulate cprofile stats in the output file between runs. In the current code of nose-cprof, by using function cProfile.dump_stats(..), it'll overwrite the current file and as a consequence will not accumulate stats with previous runs.

Here's a link towards the code of dump_stats() that didn't seem to change from 2.7 to 3.6 at least:
https://github.com/python/cpython/blob/master/Lib/cProfile.py#L44-L48

Strangely enough for me, you provide a --cprofile-stats-erase command line argument that allows to erase the file prior to a cprofile run... at first glance, discovering this possibility, I expected then that the stats where actually accumulating in a possibily pre-existing file if we didn't provide this command line argument.

The code to get the accumulation is quick to write and I'm ready to send you a PR, but are you interested in that feature, or if not, could you tell me why you provide --cprofile-stats-erase if you are going to ignore the content of that file anyway ?

Did I miss anything ?

Many thanks for your attention and for writing this nose plugin.

'pip install nose-cprof' fails -- No such file README.md

It looks like README.md might simply be missing from the tar. Here are steps to reproduce and the callstack:

$ pip install nose-cprof

Downloading/unpacking nose-cprof
  Downloading nose-cprof-0.1-2.tar.gz
  Running setup.py egg_info for package nose-cprof
    Traceback (most recent call last):
      File "<string>", line 16, in <module>
      File "/tmp/pip-build-user/nose-cprof/setup.py", line 12, in <module>
        with open(os.path.join(PATH_TO_FILE, 'README.md')) as f:
    IOError: [Errno 2] No such file or directory: '/tmp/pip-build-user/nose-cprof/README.md'

And downloading the tar from pypi confirms that README.md is missing:

$ tar -tvf ~/Downloads/nose-cprof-0.1-2.tar.gz

drwxr-xr-x marc/staff        0 2016-09-08 14:05 nose-cprof-0.1-2/
-rw-r--r-- marc/staff       50 2016-09-08 13:36 nose-cprof-0.1-2/MANIFEST.in
drwxr-xr-x marc/staff        0 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/
-rw-r--r-- marc/staff        1 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/dependency_links.txt
-rw-r--r-- marc/staff       61 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/entry_points.txt
-rw-r--r-- marc/staff        1 2016-09-08 13:40 nose-cprof-0.1-2/nose_cprof.egg-info/not-zip-safe
-rw-r--r-- marc/staff     1901 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/PKG-INFO
-rw-r--r-- marc/staff       13 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/requires.txt
-rw-r--r-- marc/staff      326 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/SOURCES.txt
-rw-r--r-- marc/staff       14 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprof.egg-info/top_level.txt
drwxr-xr-x marc/staff        0 2016-09-08 14:05 nose-cprof-0.1-2/nose_cprofile/
-rw-r--r-- marc/staff       78 2016-09-08 13:45 nose-cprof-0.1-2/nose_cprofile/__init__.py
-rw-r--r-- marc/staff     2113 2016-09-08 13:56 nose-cprof-0.1-2/nose_cprofile/nose_cprofile.py
-rw-r--r-- marc/staff     1901 2016-09-08 14:05 nose-cprof-0.1-2/PKG-INFO
-rw-r--r-- marc/staff       59 2016-09-08 14:05 nose-cprof-0.1-2/setup.cfg
-rw-r--r-- marc/staff     1365 2016-09-08 13:58 nose-cprof-0.1-2/setup.py

Update PyPI

Thank you for providing this awesome plugin! Would it be possible to update the package on pypi to include the python3 compat change that was added?

msherry / nose-cprof Goto Github PK

nose-cprof's Introduction

nose-cprof

Getting started

Prerequisites

Installation

Usage

nose-cprof's People

Contributors

Stargazers

Watchers

Forkers

nose-cprof's Issues

Accumulating cProfile stats between runs

'pip install nose-cprof' fails -- No such file README.md

Update PyPI

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