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This article is about how Python calculates TPS and QPS. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

#!/ usr/bin/env python

#coding=utf-8

"""Get tps, qps in mysql in different ways and compare them"""

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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