[Python-Dev] Python 2.3b1 has 20% slower networking? (original) (raw)

Jeff Epler jepler@unpythonic.net
Sun, 27 Apr 2003 21:04:22 -0500

I can also reproduce the slowdown.

Measured on a Redhat 9 machine, python-2.2.2-26.i386.rpm vs python 2.3b1 compiled with default options. 700MHz Pentium III in a laptop. best of 3 runs. Count of 100000. Running over the loopback device. Sentence fragments.

Server Client Throughput Speed 2.2 2.2 53520.4 100.00% 2.2 2.3b1 43726.28 81.70% 2.3b1 2.2 43032.06 80.40% 2.3b1 2.3b1 38283.78 71.53%

System load was low at the time, though I had various apps running.

I also ran the test over my 802.11b wireless setup: Server Client Throughput Speed 2.2 2.2 639.16 100.00% 2.3b1 2.2 639.07 99.98% (client was a 350MHz machine with various programs running)

that is, when running over a relatively slow link (theoretically, 11mbps) the slowdown is not measurable. However, I don't think that this really decreases the importance of this performance regression.

Jeff