python如何计算TPS和QPS

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#!/usr/bin/env python

#coding=utf-8

""" 以不同方式获取MySQL中的tps,qps,并做对比 """

import time

import sys

import os

import MySQLdb

import dbconn

def main() :

    try: 

      conn = MySQLdb.connect(host=dbconn.DB_HOST,port=int(dbconn.DB_PORT),user=dbconn.DB_USER,passwd=dbconn.DB_PASS, charset='utf8')

    except  MySQLdb.ERROR,e:

      print "Error %d:%s"%(e.args[0],e.args[1])

      exit(1)

    conn.autocommit(True)

    cursor=conn.cursor()

    diff = 1

    mystat1={}

    mystat2={}

    sql = "show global status where Variable_name in ('Com_commit','Com_delete','Com_insert','Com_rollback','Com_select','Com_update','Questions');"

    while True:

       try :

          cursor.execute(sql)

          results1 = cursor.fetchall()

          mystat1=dict(results1)

          time.sleep(diff)

          cursor.execute(sql)

          results2 = cursor.fetchall()

          mystat2=dict(results2)

          Com_diff = (int(mystat2['Com_commit'])   - int(mystat1['Com_commit']) ) / diff 

          del_diff = (int(mystat2['Com_delete'])   - int(mystat1['Com_delete']) ) / diff

          ins_diff = (int(mystat2['Com_insert'])   - int(mystat1['Com_insert']) ) / diff

          rol_diff = (int(mystat2['Com_rollback']) - int(mystat1['Com_rollback']))/ diff

          sel_diff = (int(mystat2['Com_select'])   - int(mystat1['Com_select']) ) / diff

          upd_diff = (int(mystat2['Com_update'])   - int(mystat1['Com_update']) ) / diff

          que_diff = (int(mystat2['Questions'])    - int(mystat1['Questions']) )  / diff

          qps_s = sel_diff

          tps_iud = del_diff+ins_diff+upd_diff

          qps_ques=que_diff

          tps_Com_rol= Com_diff + rol_diff 

          print 'qps_s = %s , qps_ques = %s , tps_iud = %s ,tps_Com_rol = %s'  %(qps_s ,qps_ques, tps_iud,tps_Com_rol)

       except KeyboardInterrupt :

          print "exit .."

          sys.exit()

    conn.close()

if __name__ == '__main__':

   main()

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