gevent / gevent / 2547
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master: 78%

LAST BUILD BRANCH: python-updates
DEFAULT BRANCH: master
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Jobs 3
Files 66
Run time 2min
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jamadden 
Add spawn_tree_locals, spawning_greenlet and spawning_stack to Greenlet

Based on #755.

A comment in the code goes into detail about the timing. Here it is
again:

 Timings taken Feb 21 2018 prior to integration of #755
 python -m perf timeit -s 'import gevent' 'gevent.Greenlet()'
 3.6.4       : Mean +- std dev: 1.08 us +- 0.05 us
 2.7.14      : Mean +- std dev: 1.44 us +- 0.06 us
 PyPy2 5.10.0: Mean +- std dev: 2.14 ns +- 0.08 ns

 After the integration of spawning_stack, spawning_greenlet,
 and spawn_tree_locals on that same date:
 3.6.4       : Mean +- std dev: 8.92 us +- 0.36 us ->  8.2x
 2.7.14      : Mean +- std dev: 14.8 us +- 0.5 us  -> 10.2x
 PyPy2 5.10.0: Mean +- std dev: 3.24 us +- 0.17 us ->  1.5x

Selected bench_spawn output on 3.6.4 before:

//gevent36/bin/python src/greentest/bench_spawn.py eventlet --ignore-import-errors
using eventlet from //gevent36/lib/python3.6/site-packages/eventlet/__init__.py
spawning: 11.93 microseconds per greenlet
sleep(0): 23.49 microseconds per greenlet

//gevent36/bin/python src/greentest/bench_spawn.py gevent --ignore-import-errors
using gevent from //src/gevent/__init__.py
spawning: 3.39 microseconds per greenlet
sleep(0): 17.59 microseconds per greenlet

//gevent36/bin/python src/greentest/bench_spawn.py geventpool --ignore-import-errors
using gevent from //src/gevent/__init__.py
spawning: 8.71 microseconds per greenlet

//gevent36/bin/python src/greentest/bench_spawn.py geventraw --ignore-import-errors
using gevent from //src/gevent/__init__.py
spawning: 2.09 microseconds per greenlet

//gevent36/bin/python src/greentest/bench_spawn.py none --ignore-import-errors
    noop: 0.33 microseconds per greenlet

And after:

//gevent36/bin/python bench_spawn.py gevent --ignore-import-errors
using gevent from //src/gevent/__init__.py
spawning: 12.99 microseconds per greenlet -> 3.8x

//gevent36/bin/python bench_spawn.py geventpool --ignore-import-errors
using gevent from //src/gevent/__init__.py
spawning: 19.49... (continued)

8648 of 10655 relevant lines covered (81.16%)

2.2 hits per line

Jobs
ID Job ID Ran Files Coverage
1 2547.1 (TASK=test-py27) 0
76.06
 Travis Job 2547.1
3 2547.3 (TASK=test-py36) 0
73.39
 Travis Job 2547.3
4 2547.4 (TASK=test-py37) 0
73.43
 Travis Job 2547.4
Source Files on build 2547
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