性能（pystone）的python 2.4低于python 2.3 ??? [英] Performance (pystone) of python 2.4 lower then python 2.3 ???

问题描述

刚刚在一台机器（RH8.0 Linux）上安装了Python 2.4，它也安装了python 2.3

和python 2.2。后者带有linux发行版，其他

是从源代码压缩包中编译的。


比较它们会产生以下意外结果：


[lucas @ oslwb03测试] $ / usr / bin / python pystone.py

Pystone（1.1）50000次通过时间= 1.86

这台机器基准价格为26881.7 pystones / second

[lucas @ oslwb03测试] $ /usr/local/bin/python2.3 pystone.py

Pystone（1.1）时间为50000次= 1.22

这台机器的基准测试点为40983.6 pystones / second


这没关系，速度提高了52％，但是：


lucas @ oslwb03 test] $ /usr/local/bin/python2.4 pystone.py

Pystone（1.1）50000次通过时间= 1.31

这个机器基准在38167.9 pystones / second


7％的速度降低???根据文档，它应该增加5％？


机器是一个3.0 GHz Xeon盒子。


python 2.3和2.4没有任何选项的配置。


任何了解发生了什么的人？


问候，卢卡斯

解决方案

/ usr / bin / python pystone.py

Pystone（1.1）50000次通过时间= 1.86

本机基准测试基准为26881.7个/ /秒
[lucas @ oslwb03测试]

/usr/local/bin/python2.3 pystone.py
Pystone（1.1）50000次通过时间= 1.22

本机基准测试点位于40983.6 pystones /秒


这没关系，52％速度提高，但是：


lucas @ oslwb03 test]

/usr/local/bin/python2.4 pystone.py

Pystone（1.1）50000次通过时间= 1.31

本机基准测试基准为38167.9个/星期二


A 7％s peed减少???根据文档，它应该增加5％？


机器是一个3.0 GHz Xeon盒子。


python 2.3和2.4没有任何选项的配置。


任何了解发生了什么的人？


问候，卢卡斯

Hi,

Just installed Python 2.4 on a machine (RH8.0 Linux) that also has python 2.3
and python 2.2 installed. The latter came with the linux distribution, the other
are compiled from source tarballs.

Comparing them gives the following unexpected result:

[lucas@oslwb03 test]$ /usr/bin/python pystone.py
Pystone(1.1) time for 50000 passes = 1.86
This machine benchmarks at 26881.7 pystones/second
[lucas@oslwb03 test]$ /usr/local/bin/python2.3 pystone.py
Pystone(1.1) time for 50000 passes = 1.22
This machine benchmarks at 40983.6 pystones/second

This is ok, a 52% speed increase, but:

lucas@oslwb03 test]$ /usr/local/bin/python2.4 pystone.py
Pystone(1.1) time for 50000 passes = 1.31
This machine benchmarks at 38167.9 pystones/second

A 7% speed DECREASE??? According to the documentation it should be a 5% increase?

The machine is a 3.0 GHz Xeon box.

Both python 2.3 and 2.4 where configure without any options.

Anyone who understands what is going on?

Regards, Lucas

解决方案

/usr/bin/python pystone.py
Pystone(1.1) time for 50000 passes = 1.86
This machine benchmarks at 26881.7 pystones/second
[lucas@oslwb03 test]

/usr/local/bin/python2.3 pystone.py
Pystone(1.1) time for 50000 passes = 1.22
This machine benchmarks at 40983.6 pystones/second

This is ok, a 52% speed increase, but:

lucas@oslwb03 test]

/usr/local/bin/python2.4 pystone.py
Pystone(1.1) time for 50000 passes = 1.31
This machine benchmarks at 38167.9 pystones/second

A 7% speed DECREASE??? According to the documentation it should be a 5% increase?

The machine is a 3.0 GHz Xeon box.

Both python 2.3 and 2.4 where configure without any options.

Anyone who understands what is going on?

Regards, Lucas

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