run python-psycopg2 on new system

  SELECT * FROM foo

  UPDATE foo SET bar=bar+1 WHERE id=1

* benchmark results

* benchmark results on x201 laptop, postgres runs on 5400rpm SATA disk.

each entry has format: db_server, compiler, libraries

all build is release mode (with -O or equivalent).

  0.54

  28.51

  no effect.

** 2019-02-23 on new ryzen5 PC. postgres 9.6 on M2 SSD. openjdk 1.8.0_162, jdbc postgresql 42.2.5

* benchmark result on new ryzen5 PC. postgres runs on M2 SSD.

** 2019-02-23 pg 9.6, python 2.7.13, psycopg2==2.6.2

INFO     running benchmark...

DEBUG    trace_time, func=select_test, duration=0.18

DEBUG    trace_time, func=update_test, duration=2.78

--

INFO     running benchmark...

DEBUG    trace_time, func=select_test, duration=0.19

DEBUG    trace_time, func=update_test, duration=2.76

** 2019-02-23 pg 9.6. openjdk 1.8.0_162, jdbc postgresql 42.2.5

warming up JVM...

select time cost: 0.29s

update time cost: 2.68s

run:

	PG_T1_PASSWORD="62IWgtWiPCZdt8qu" python bench.py

.PHONY: run

"""

from contextlib import contextmanager

import sys

import os

import logging

import psycopg2

from yygame.debug import trace_time

from wells.debug import trace_time

logging.basicConfig(format='%(levelname)-8s %(message)s', level=logging.DEBUG)

logger = logging.getLogger('')

def main():

    password = os.getenv("PG_T1_PASSWORD")

    if not password:

        logger.error(u"Please define PG_T1_PASSWORD environment variable")

    conn = psycopg2.connect(host="localhost",

                            database="t1",

                            user="t1",

                            password="fNfwREMqO69TB9YqE+/OzF5/k+s=")

                            password=password)

    logger.info("running benchmark...")

    select_test(conn)

    update_test(conn)