#!/usr/bin/env python3
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''' This Python script interprets various sched stats values.
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Validates cpu consolidation for given sched_mc_power_saving value
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'''
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import os
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import sys
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import time
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from optparse import OptionParser
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from pm_sched_mc import *
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__author__ = "Poornima Nayak <mpnayak@linux.vnet.ibm.com>"
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class Usage(Exception):
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def __init__(self, msg):
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self.msg = msg
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def main(argv=None):
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if argv is None:
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argv = sys.argv
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usage = "-w"
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parser = OptionParser(usage)
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parser.add_option("-v", "--variation_test", dest="vary_mc_smt",
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default=False, action="store_true", help="Vary sched_mc & sched_smt. \
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-c and -t inputs are initial value of sched_mc & sched_smt")
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parser.add_option("-c", "--mc_value", dest="mc_value",
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default=0, help="Sched mc power saving value 0/1/2")
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parser.add_option("-t", "--smt_value", dest="smt_value",
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default=0, help="Sched smt power saving value 0/1/2")
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parser.add_option("-w", "--workload", dest="work_ld",
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default="ebizzy", help="Workload can be ebizzy/kernbench")
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parser.add_option("-s", "--stress", dest="stress",
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default="partial", help="Load on system is full/partial [i.e 50%]/thread")
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parser.add_option("-p", "--performance", dest="perf_test",
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default=False, action="store_true", help="Enable performance test")
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(options, args) = parser.parse_args()
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try:
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count_num_cpu()
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count_num_sockets()
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if is_hyper_threaded():
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generate_sibling_list()
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# User should set option -v to test cpu consolidation
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# resets when sched_mc &(/) sched_smt is disabled when
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# workload is already running in the system
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if options.vary_mc_smt:
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# Since same code is used for testing package consolidation and core
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# consolidation is_multi_socket & is_hyper_threaded check is done
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if is_multi_socket() and is_multi_core() and options.mc_value:
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set_sched_mc_power(options.mc_value)
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if is_hyper_threaded() and options.smt_value:
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set_sched_smt_power(options.smt_value)
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#Generate arguments for trigger workload, run workload in background
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map_cpuid_pkgid()
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background="yes"
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duration=360
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pinned="no"
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if int(options.mc_value) < 2 and int(options.smt_value) < 2:
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trigger_ebizzy (options.smt_value, "partial", duration, background, pinned)
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work_ld="ebizzy"
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#Wait for 120 seconds and then validate cpu consolidation works
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#When sched_mc & sched_smt is set
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import time
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time.sleep(120)
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else:
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#Wait for 120 seconds and then validate cpu consolidation works
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#When sched_mc & sched_smt is set
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trigger_kernbench (options.smt_value, "partial", background, pinned, "no")
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work_ld="kernbench"
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import time
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time.sleep(300)
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generate_report()
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status = validate_cpu_consolidation("partial", work_ld, options.mc_value, options.smt_value)
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if status == 0:
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print("INFO: Consolidation worked sched_smt &(/) sched_mc is set")
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#Disable sched_smt & sched_mc interface values
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if options.vary_mc_smt and options.mc_value > 0:
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set_sched_mc_power(0)
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mc_value = options.mc_value
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else:
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mc_value = 0
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if options.vary_mc_smt and options.smt_value > 0 and is_hyper_threaded():
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set_sched_smt_power(0)
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smt_value = options.smt_value
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else:
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smt_value = 0
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if work_ld == "kernbench":
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time.sleep(240)
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else:
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time.sleep(120)
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generate_report()
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status = validate_cpu_consolidation("partial", work_ld, mc_value, smt_value)
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if background == "yes":
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stop_wkld(work_ld)
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#CPU consolidation should fail as sched_mc &(/) sched_smt is disabled
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if status == 1:
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return(0)
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else:
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return(1)
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else:
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print("INFO: CPU consolidation failed when sched_mc &(/) \
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sched_smt was enabled. This is pre-requisite to proceed")
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return(status)
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else:
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#The else part of the code validates behaviour of sched_mc
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# and sched_smt set to 0, 1 & 2
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if is_multi_socket():
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set_sched_mc_power(options.mc_value)
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if is_hyper_threaded():
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set_sched_smt_power(options.smt_value)
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map_cpuid_pkgid()
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print("INFO: Created table mapping cpu to package")
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background="no"
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duration=60
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pinned ="no"
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if options.perf_test:
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perf_test="yes"
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else:
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perf_test="no"
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trigger_workld( options.smt_value, options.work_ld, options.stress, duration, background, pinned, perf_test)
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generate_report()
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status = validate_cpu_consolidation(options.stress, options.work_ld,options.mc_value, options.smt_value)
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reset_schedmc()
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if is_hyper_threaded():
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reset_schedsmt()
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return(status)
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except Exception as details:
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print("INFO: CPU consolidation failed", details)
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return(1)
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if __name__ == "__main__":
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sys.exit(main())
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