2. SpeedIT: README¶
SpeedIT: A Collection of: Benchmark-IT, Profile-IT, Line-Memory-Profile-IT, Disassemble-IT.
Note
SpeedIT as of version 4.2 (20140726)` is not backwards compatible
Contents
2.1. HTML Documentation¶
HTML documentation of the project is hosted at: SpeedIT-HTML documentation
2.2. System Requirements¶
SpeedIT: Required Software (in development-source: ‘docs/source/main_docs’)
2.2.1. Installation¶
python packages might be available from pypi: to be installed with: pip/pip3
$ sudo pip3 install SpeedIT
or run the standard package installation from the source folder:
$ python3 setup.py install
or use the top-level Makefile from the development-source: ‘root folder’: to see all options run:
$ make
or add the folder to the python path: see RandomNotes (in development-source: ‘info folder’)
2.2.2. Build the Documentation¶
MAIN plus API documentation in development-source: ‘docs folder’
To build: run the `development-source: top-level` Makefile
$ make docs
- Resulting html documentation will be in:
- /docs/_build/html/index.html
2.3. Getting Started¶
Generate the documentation or read the .rst files
Run any tests: in the development-source: top-level (root) project folder execute:
$ make tests
Check out any Examples folder, SpeedCheck folder, Tests folder
2.4. Main Info¶
SpeedIT is a small collection of 4 modules: BenchmarkIT, ProfileIT, LineMemoryProfileIT, DisassembleIT and additional the combined: MainCode module
2.4.1. SpeedIT¶
MainCode.speed_it function for easy combined: <BenchmarkIT, ProfileIT, LineMemoryProfileIT, DisassembleIT>
To use it one needs to define a couple of functions to benchmark
2.4.1.1. 1. import speed_it¶
from SpeedIT.MainCode import speed_it
2.4.1.2. 2. define some code to Speed-IT¶
test_value = '~/etc/mypath'
# define SpeedIT functions
def example_startswith():
if test_value.startswith('~/'):
pass
def example_two_idx():
if test_value[0] == '~' and test_value[1] == '/':
pass
def example_slice():
if test_value[:2] == '~/':
pass
2.4.1.3. 3. define the function mapping¶
This is a dictionary with key(names) and a tuple per function:
- value format: tuple (function, list_of_positional_arguments, dictionary_of_keyword_arguments)
Note
if use_func_name=False the key(names) are used in the output if True the real function name is used
# defining the: func_dict mapping
func_dict = {
# value format: tuple (function, list_of_positional_arguments, dictionary_of_keyword_arguments)
'startswith': (example_startswith, [], {}),
'two_idx': (example_two_idx, [], {}),
'slice': (example_slice, [], {}),
}
2.4.1.4. 4. define the setup_line_list¶
This is a list with all needed code to setup so that the functions can run: e.g. imports, global variables
setup_line_list = [
'from __main__ import test_value'
]
2.4.1.5. 5. run speed-it and write result to file¶
For the available options see the API-DOC or source code
result = speed_it(
func_dict,
setup_line_list,
enable_benchmarkit=True,
enable_profileit=True,
enable_linememoryprofileit=True,
enable_disassembleit=True,
use_func_name=False,
output_in_sec=False,
profileit__max_slashes_fileinfo=2,
profileit__repeat=1,
benchmarkit__with_gc=False,
benchmarkit__check_too_fast=True,
benchmarkit__rank_by='best',
benchmarkit__run_sec=1,
benchmarkit__repeat=3
)
with open('result_output/ReadmeExampleMainSpeedIT.txt', 'w') as file_:
file_.write('\n\n ReadmeExampleMainSpeedIT.py output\n\n')
file_.write(result)
2.4.2. BenchmarkIT¶
Note
full versions example is in the development-source: Examples folder: Example2aBenchmarkIT.py and Example2bBenchmarkIT.py
BenchmarkIT supports also timing of only selected code parts within a function using Comment lines with a START/END TAG.
START-TAG: # ::SPEEDIT::
END-TAG: # **SPEEDIT**
Note
adding some description after the START-TAG: # ::SPEEDIT:: can help to distinguish in some error messages
The code below will report the combined time of the code part between # ::SPEEDIT:: and # **SPEEDIT**
- in the case below skipping the time spent in shuffle(data)
def example_multiple_subcode_blocks():
# ::SPEEDIT:: data
data = dict(zip(range(1000), range(1000)))
# **SPEEDIT**
shuffle(data)
# ::SPEEDIT:: sorted
result = sorted(data.items(), key=itemgetter(1))
del result
# **SPEEDIT**
SpeedIT: BenchmarkIT for: <3> functions. benchmarkit__with_gc: <False> benchmarkit__run_sec: <1> | |||||||||
---|---|---|---|---|---|---|---|---|---|
name | rank-best | compare % | num. loops | avg_loop | best_loop | second_best_loop | worst_loop | second_worst_loop | all_loops time |
multiple_subcode_blocks | 1 | 100.000 | 481 | 612.10 us | 604.81 us | 605.08 us | 739.61 us | 723.65 us | 294.42 ms |
single_subcode_blocks | 2 | 236.732 | 449 | 1.58 ms | 1.43 ms | 1.44 ms | 2.98 ms | 2.97 ms | 707.21 ms |
whole_function | 3 | 337.108 | 482 | 2.08 ms | 2.04 ms | 2.04 ms | 2.24 ms | 2.12 ms | 1.00 s |
Short explanation of result:
compare %: Depends on the setting for rank_by
- rank_by=’best’: takes the function with the fastest best_loop time and set it as 100 % and the other test are compared to that
- rank_by=’average’: takes the function with the fastest avg_loop time and set it as 100 % and the other test are compared to that
loops: are the loops used
The next five are here to get a feeling of the extremes and how accurate the results might be
best_loop: the fastest of all loops
second_best_loop: the second fastest of all loops
worst_loop: the slowest of all loops
second_worst_loop: the second slowest of all loops
all_loops time: is the time for all loops combined: because of overhead this is often lower than the benchmarkit__run_sec set
- also consider that if one times only selected code parts within a function: using START/END TAGS all_loops time might be much lower
as it reports the measured time and not the total execution time
Note
from https://docs.python.org/3.4/library/timeit.html repeat
It’s tempting to calculate mean and standard deviation from the result vector and report these. However, this is not very useful. In a typical case, the lowest value gives a lower bound for how fast your machine can run the given code snippet; higher values in the result vector are typically not caused by variability in Python’s speed, but by other processes interfering with your timing accuracy. So the min() of the result is probably the only number you should be interested in. After that, you should look at the entire vector and apply common sense rather than statistics.
2.4.3. ProfileIT¶
Uses pythons cProfiler:
Note
full versions example is in the development-source: Examples folder: Example3ProfileIT.py
RESULT is for each function a separate table which format is conform with reStructuredText
ProfileIT name: <example_lambda> profileit__repeat: <2> || total_calls: <8767> primitive_calls: <8767> total_time: <6.12 ms> | ||||
---|---|---|---|---|
rank | compare % | func_time | number_of_calls | func_txt |
1 | 36.664 | 2.24 ms | 1,998 | lib/python3.4/random.py:220(_randbelow) |
2 | 25.740 | 1.57 ms | 2 | lib/python3.4/random.py:258(shuffle) |
3 | 20.392 | 1.25 ms | 2 | <built-in method sorted> |
4 | 8.782 | 537.00 us | 2,761 | <method ‘getrandbits’ of ‘_random.Random’ objects> |
5 | 4.513 | 276.00 us | 2,000 | Example3ProfileIT.py:60(<lambda>) |
6 | 2.829 | 173.00 us | 1,998 | <method ‘bit_length’ of ‘int’ objects> |
7 | 1.063 | 65.00 us | 2 | Example3ProfileIT.py:58(example_lambda) |
8 | 0.016 | 1.00 us | 2 | <built-in method len> |
9 | 0.000 | 0.00 ns | 2 | <method ‘items’ of ‘dict’ objects> |
Short explanation of result:
this is a combined result for all runs specified by: profileit__repeat
- compare %: takes the func_time starting with the slowest part and displays
how many % it took based on the whole execution time (100 %)
2.4.4. LineMemoryProfileIT¶
A profiler that records the amount of memory for each line This code is based on parts of: https://github.com/fabianp/memory_profiler
Note
full versions example is in the development-source: Examples folder: named Example4LineMemoryProfileI.py
2.4.5. DisassembleIT¶
Uses pythons dis
Note
full versions example is in the development-source: Examples folder: named Example5DisassembleIT.py
2.5. Code Examples¶
for code examples see the files in folder: development-source: Examples
2.6. Getting Help¶
No help is provided. You may try to open a new issue at github but it is uncertain if anyone will look at it.
SpeedIT is distributed under the terms of the BSD 3-clause license. Consult LICENSE.rst or http://opensource.org/licenses/BSD-3-Clause.
(c) 2014, peter1000 https://github.com/peter1000 All rights reserved.