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microservices_example.py
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"""
Comparison of microservice deployment alternatives.
"""
from __future__ import print_function
import random
import simpy
from serversim import *
# fi = open("simout.txt", "w")
fi = sys.stdout
usersCurve = [(0, 900), (50, 650), (100, 900), (150, 650)]
def microservices_example(num_users, weight1, weight2, server_range1,
server_range2):
def cug(mid, delta):
"""Computation units geneartor"""
def f():
return random.uniform(mid - delta, mid + delta)
return f
def ld_bal(svc_name):
"""Application server load-balancer."""
if svc_name == "svc_1":
s = random.choice(servers1)
elif svc_name == "svc_2":
s = random.choice(servers2)
else:
assert False, "Invalid service type."
return s
try:
random.seed(12345)
# num_users = 700
simtime = 200
hw_threads = 10
sw_threads = 20
speed = 20
svc_1_comp_units = 2.0
svc_2_comp_units = 1.0
env = simpy.Environment()
n_servers = max(server_range1[-1] + 1, server_range2[-1] + 1)
servers = [Server(env, hw_threads, sw_threads, speed, "AppServer_%s" % i)
for i in range(n_servers)]
servers1 = [servers[i] for i in server_range1]
servers2 = [servers[i] for i in server_range2]
svc_1 = CoreSvcRequester(env, "svc_1", cug(svc_1_comp_units,
svc_1_comp_units*.9), ld_bal)
svc_2 = CoreSvcRequester(env, "svc_2", cug(svc_2_comp_units,
svc_2_comp_units*.9), ld_bal)
weighted_txns = [(svc_1, weight1),
(svc_2, weight2)
]
min_think_time = 2.0 # .5 # 4
max_think_time = 10.0 # 1.5 # 20
grp = UserGroup(env, num_users, "UserTypeX", weighted_txns,
min_think_time, max_think_time)
grp.activate_users()
print("\n\n***** Start Simulation --", num_users, ",", weight1, ",",
weight2, ", [", server_range1[0], ",", server_range1[-1] + 1,
") , [", server_range2[0], ",", server_range2[-1] + 1, ") *****",
file=fi)
print("Simulation: num_users =", num_users, "; simTime =", simtime,
file=fi)
env.run(until=simtime)
print("<< ServerExample >>\n", file=fi)
indent = " " * 4
# print parameters
print("\n" + "simtime =", simtime, file=fi)
print("\n" + "Servers:", file=fi)
for svr in servers:
print(indent*1 + "Server:", svr.name, file=fi)
print(indent * 2 + "max_concurrency =", svr.max_concurrency, file=fi)
print(indent * 2 + "num_threads =", svr.num_threads, file=fi)
print(indent*2 + "speed =", svr.speed, file=fi)
print(indent * 2 + "avg_process_time =", svr.avg_process_time, file=fi)
print(indent * 2 + "avg_hw_queue_time =", svr.avg_hw_queue_time, file=fi)
print(indent * 2 + "avg_thread_queue_time =", svr.avg_thread_queue_time, file=fi)
print(indent * 2 + "avg_service_time =", svr.avg_service_time, file=fi)
print(indent * 2 + "avg_hw_queue_length =", svr.avg_hw_queue_length, file=fi)
print(indent * 2 + "avg_thread_queue_length =", svr.avg_thread_queue_length, file=fi)
print(indent * 2 + "hw_queue_length =", svr.hw_queue_length, file=fi)
print(indent * 2 + "hw_in_process_count =", svr.hw_in_process_count, file=fi)
print(indent * 2 + "thread_queue_length =", svr.thread_queue_length, file=fi)
print(indent * 2 + "thread_in_use_count =", svr.thread_in_use_count, file=fi)
print(indent*2 + "utilization =", svr.utilization, file=fi)
print(indent*2 + "throughput =", svr.throughput, file=fi)
print(indent*1 + "Group:", grp.name, file=fi)
print(indent * 2 + "num_users =", grp.num_users, file=fi)
print(indent * 2 + "min_think_time =", grp.min_think_time, file=fi)
print(indent * 2 + "max_think_time =", grp.max_think_time, file=fi)
print(indent * 2 + "responded_request_count =", grp.responded_request_count(None), file=fi)
print(indent * 2 + "unresponded_request_count =", grp.unresponded_request_count(None), file=fi)
print(indent * 2 + "avg_response_time =", grp.avg_response_time(None), file=fi)
print(indent * 2 + "std_dev_response_time =", grp.std_dev_response_time(None), file=fi)
print(indent*2 + "throughput =", grp.throughput(None), file=fi)
for txn in grp.svcs:
print(indent*2 + txn.svc_name + ":", file=fi)
print(indent * 3 + "responded_request_count =", grp.responded_request_count(txn), file=fi)
print(indent * 3 + "unresponded_request_count =", grp.unresponded_request_count(txn), file=fi)
print(indent * 3 + "avg_response_time =", grp.avg_response_time(txn), file=fi)
print(indent * 3 + "std_dev_response_time =", grp.std_dev_response_time(txn), file=fi)
print(indent*3 + "throughput =", grp.throughput(txn), file=fi)
finally:
if not fi == sys.stdout:
fi.close()
print("\n*** Done ***", file=fi)
if __name__ == "__main__":
print("\n\n\n@@@@@@@@@ Start comparative simulations @@@@@@@@@@")
microservices_example(num_users=700, weight1=2, weight2=1, server_range1=range(0, 10), server_range2=range(0, 10))
microservices_example(num_users=700, weight1=2, weight2=1, server_range1=range(0, 8), server_range2=range(8, 10))
#
# microservices_example(numUsers=700, weight1=5, weight2=1, serverRange1=range(0, 10), serverRange2=range(0, 10))
# microservices_example(numUsers=700, weight1=5, weight2=1, serverRange1=range(0, 8), serverRange2=range(8, 10))
#
# microservices_example(numUsers=700, weight1=1, weight2=1, serverRange1=range(0, 10), serverRange2=range(0, 10))
# microservices_example(numUsers=700, weight1=1, weight2=1, serverRange1=range(0, 8), serverRange2=range(8, 10))
#
# microservices_example(numUsers=700, weight1=1, weight2=1, serverRange1=range(0, 9), serverRange2=range(0, 9))
# microservices_example(numUsers=700, weight1=1, weight2=1, serverRange1=range(0, 7), serverRange2=range(7, 9))
# microservices_example(numUsers=700, weight1=1, weight2=1, serverRange1=range(0, 6), serverRange2=range(6, 9))
#
# microservices_example(numUsers=usersCurve, weight1=2, weight2=1, serverRange1=range(0, 10), serverRange2=range(0, 10))
# microservices_example(numUsers=usersCurve, weight1=2, weight2=1, serverRange1=range(0, 8), serverRange2=range(8, 10))
#
# microservices_example(numUsers=usersCurve, weight1=1, weight2=1, serverRange1=range(0, 9), serverRange2=range(0, 9))
# microservices_example(numUsers=usersCurve, weight1=1, weight2=1, serverRange1=range(0, 7), serverRange2=range(7, 9))
# microservices_example(numUsers=usersCurve, weight1=1, weight2=1, serverRange1=range(0, 6), serverRange2=range(6, 9))