Appengine, performance degradation with python27

Question

I wanted to test python27 on appengine so I have migrated my app from python25. Performance got more than 2x slower for every request! Then I\'ve returned to python25 and perfor

Answer 1

By swtiching to python2.7 my app performance under load is 3x worse.

With 2.5:

Connection Times (ms) min mean[+/-sd] median max Connect: 36 48 15.4 41 109 Processing: 685 3010 1893.3 2657 9255 Waiting: 685 3009 1893.3 2656 9255 Total: 725 3058 1900.5 2711 9333

Percentage of the requests served within a certain time (ms) 50% 2711 66% 3287 75% 3896 80% 4521 90% 6146 95% 7078 98% 7934 99% 8413 100% 9333 (longest request)

With 2.7:

Connection Times (ms) min mean[+/-sd] median max Connect: 35 46 11.4 41 96 Processing: 1076 7614 4190.5 6711 32284 Waiting: 1075 7614 4190.5 6711 32283 Total: 1124 7660 4195.5 6764 32353

Percentage of the requests served within a certain time (ms) 50% 6764 66% 7790 75% 8751 80% 9392 90% 10844 95% 13139 98% 25219 99% 27259 100% 32353 (longest request)