3 ms·

Python 3 vs. Java

21 points by tvvocold 12y ago

jszymborski 12y ago
I always wish these benchmarks had a "Conclusion" or "Discussion" section...
- jonrx 12y ago
  Those ones "have" : http://benchmarksgame.alioth.debian.org/dont-jump-to-conclusions.html http://benchmarksgame.alioth.debian.org/dont-jump-to-conclus...
  - igouy 12y ago
    Particularly: "Last words -- A good starting point"
- igouy 12y ago
  (Also see the homepage) tl;dr Measurement is highly specific -- the time taken for this benchmark task, by this toy program, with this programming language implementation, with these options, on this computer, with these workloads. Same toy program, same computer, same workload -- but much slower. Measurement is not prophesy.
BoardsOfCanada 12y ago
This is compared to the standard (CPython) implementation. PyPy is about 7 times faster, often uses less memory and generally optimizes pythonic code better, so would improve all three metrics. http://speed.pypy.org/ http://speed.pypy.org/
- lern_too_spel 12y ago
  And ZipPy (Python on the JVM) handily beats PyPy on most benchmarks but obviously doesn't beat Java on the JVM for idiomatic code due to the better data structures available in Java Collections vs. Python's standard library.
piker 12y ago
I love Python, and was eager to read some great measurements for 3.4, but I am having trouble comprehending this chart. I read the chart: Python 3 used what fraction? used how many times more? Time-used |- |--- 25% median 75% ---| -| (Elapsed secs) ± ± 5× 27× 51× 77× 77× to indicate that even the 25th percentile Python application required 5 times the amount of time to complete as its Java counterpart. It seems that only the pidigits implementation required less time to complete. How does that lead to the conclusion that Python is -approximately- faster? Edit: fixed chart.
- bsznjyewgd 12y ago
  It's just poor wording. The "approximately" isn't "yes, it's approximately faster" but "here are the numbers -- approximately". Notice that it says the same thing when you reverse the Python vs Java comparison.
  - igouy 12y ago
    Hmmm. 2 : Approximately - Are the Python 3 programs faster?
deleted 12y ago
[deleted]
aceperry 12y ago
I would be very interested to see performance with networking types of code. That would be of great interest to this audience.
- igouy 12y ago
  So design the tasks, make the measurements, and publish your results.
  - collyw 12y ago
    There are a load of database related tasks I would love to benchmark, but I simply don't have the time. Posting a comment like that here, someone will often know of a similar benchmark and reply with it.

Python 3 vs. Java

21 points by tvvocold 12y ago

jszymborski 12y ago

I always wish these benchmarks had a "Conclusion" or "Discussion" section...

jonrx 12y ago
Those ones "have" : http://benchmarksgame.alioth.debian.org/dont-jump-to-conclusions.html http://benchmarksgame.alioth.debian.org/dont-jump-to-conclus...
- igouy 12y ago
  Particularly: "Last words -- A good starting point"
igouy 12y ago
(Also see the homepage) tl;dr Measurement is highly specific -- the time taken for this benchmark task, by this toy program, with this programming language implementation, with these options, on this computer, with these workloads. Same toy program, same computer, same workload -- but much slower. Measurement is not prophesy.

BoardsOfCanada 12y ago

This is compared to the standard (CPython) implementation. PyPy is about 7 times faster, often uses less memory and generally optimizes pythonic code better, so would improve all three metrics. http://speed.pypy.org/ http://speed.pypy.org/

lern_too_spel 12y ago
And ZipPy (Python on the JVM) handily beats PyPy on most benchmarks but obviously doesn't beat Java on the JVM for idiomatic code due to the better data structures available in Java Collections vs. Python's standard library.

piker 12y ago

I love Python, and was eager to read some great measurements for 3.4, but I am having trouble comprehending this chart. I read the chart: Python 3 used what fraction? used how many times more? Time-used |- |--- 25% median 75% ---| -| (Elapsed secs) ± ± 5× 27× 51× 77× 77× to indicate that even the 25th percentile Python application required 5 times the amount of time to complete as its Java counterpart. It seems that only the pidigits implementation required less time to complete. How does that lead to the conclusion that Python is -approximately- faster? Edit: fixed chart.

bsznjyewgd 12y ago
It's just poor wording. The "approximately" isn't "yes, it's approximately faster" but "here are the numbers -- approximately". Notice that it says the same thing when you reverse the Python vs Java comparison.
- igouy 12y ago
  Hmmm. 2 : Approximately - Are the Python 3 programs faster?

deleted 12y ago

[deleted]

aceperry 12y ago

I would be very interested to see performance with networking types of code. That would be of great interest to this audience.

igouy 12y ago
So design the tasks, make the measurements, and publish your results.
- collyw 12y ago
  There are a load of database related tasks I would love to benchmark, but I simply don't have the time. Posting a comment like that here, someone will often know of a similar benchmark and reply with it.