Not sure why this text/plain message is marked invalid given it is, well, a plain text message. Here are the details:
Kenji,
TCP_NODELAY should be enabled in the 2.7.6 build.
Make sure you have all the APE patches from 9legacy or check the sources:
Python 2.7.6 is the last viable release on Plan 9 until a rewrite of the _p9ssl.c version of the ssl module is completed. After 2.7.6 the Python group back ported the openssl module from Python 3 to the 2.7 branch and it broke the underlying ssl module hooks used in the Plan 9 Python 2.7.6 port that leveraged libsec instead of openssl.
Feel free to contact me off list if you need additional help.
Jeff