From 7da91858ce7959f102a04bca2b2fcfd418e5a7a9 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Wed, 15 May 2019 17:47:22 +0200
Subject: introduce server concept to Benchmark

A benchmark object can specify a list of cmds to execute as
"servers" in the member attribute server_cmds.
Servers are started and terminated through Popen objects.
This requires the server cmds to not daemonize so the server
can be terminated through the Popen object.
For each started server cmd a shutdown function is registered with
atexit to terminate all servers even if a exception occurs.

Use the new server concept in httpd and mysql benchmarks
---
 src/benchmarks/httpd.py | 70 +++++++++++++------------------------------------
 1 file changed, 18 insertions(+), 52 deletions(-)

(limited to 'src/benchmarks/httpd.py')

diff --git a/src/benchmarks/httpd.py b/src/benchmarks/httpd.py
index de59d4e..980a6cc 100644
--- a/src/benchmarks/httpd.py
+++ b/src/benchmarks/httpd.py
@@ -1,4 +1,3 @@
-import atexit
 import matplotlib.pyplot as plt
 import numpy as np
 import re
@@ -8,55 +7,26 @@ from subprocess import PIPE
 import sys
 from time import sleep
 
-from src.globalvars import builddir
 from src.benchmark import Benchmark
 from src.util import *
 
-server_cmd = "{} -c {}/benchmarks/httpd/nginx/nginx.conf".format(shutil.which("nginx"), builddir).split()
-
 
 class Benchmark_HTTPD(Benchmark):
     def __init__(self):
         self.name = "httpd"
         self.descrition = """TODO"""
 
-        self.args = {"nthreads": Benchmark.scale_threads_for_cpus(2)}
-        self.cmd = "ab -n 10000 -c {nthreads} localhost:8080/index.html"
+        self.args = {"nthreads": Benchmark.scale_threads_for_cpus(2),
+                     "site": ["index.html", "index.php"]}
+        self.cmd = "ab -n 100 -c {nthreads} localhost:8080/{site}"
         self.measure_cmd = ""
-        self.server_benchmark = True
+        self.server_cmds = ["nginx -c {builddir}/benchmarks/httpd/etc/nginx/nginx.conf",
+                            "php-fpm -c {builddir}/benchmarks/httpd/etc/php/php.ini -y {builddir}/benchmarks/httpd/etc/php/php-fpm.conf -F"]
 
         self.requirements = ["nginx", "ab"]
 
-        atexit.register(self.terminate_server)
-
         super().__init__()
 
-    def terminate_server(self):
-        # check if nginx is running
-        if os.path.isfile(os.path.join(builddir, "benchmarks", self.name, "nginx", "nginx.pid")):
-            ret = subprocess.run(server_cmd + ["-s", "stop"], stdout=PIPE,
-                                 stderr=PIPE, universal_newlines=True)
-
-            if ret.returncode != 0:
-                print_debug("Stdout:", ret.stdout)
-                print_debug("Stderr:", ret.stderr)
-                raise Exception("Stopping {} failed with {}".format(server_cmd[0], ret.returncode))
-
-    def preallocator_hook(self, allocator, run, env, verbose):
-        actual_cmd = allocator[1]["cmd_prefix"].split() + server_cmd
-        print_info("Starting server with:", actual_cmd)
-
-        ret = subprocess.run(actual_cmd, stdout=PIPE, stderr=PIPE, env=env,
-                                       universal_newlines=True)
-        if ret.returncode != 0:
-            print_debug("Stdout:", ret.stdout)
-            print_debug("Stderr:", ret.stderr)
-            raise Exception("Starting {} for {} failed with {}".format(server_cmd[0], allocator[0], ret.returncode))
-
-
-    def postallocator_hook(self, allocator, run, verbose):
-        self.terminate_server()
-
     def process_output(self, result, stdout, stderr, allocator, perm, verbose):
         result["time"] = re.search("Time taken for tests:\s*(\d*\.\d*) seconds", stdout).group(1)
         result["requests"] = re.search("Requests per second:\s*(\d*\.\d*) .*", stdout).group(1)
@@ -74,33 +44,29 @@ class Benchmark_HTTPD(Benchmark):
         self.calc_desc_statistics()
         
         # linear plot
-        self.plot_single_arg("{requests}",
+        self.plot_fixed_arg("{requests}",
                              xlabel='"threads"',
                              ylabel='"requests/s"',
-                             title='"ab -n 10000 -c threads"')
+                             autoticks=False,
+                             filepostfix="requests",
+                             title='"ab -n 10000 -c " + str(perm.nthreads)')
 
         # linear plot
         ref_alloc = list(allocators)[0]
-        self.plot_single_arg("{requests}",
+        self.plot_fixed_arg("{requests}",
                              xlabel='"threads"',
                              ylabel='"requests/s scaled at " + scale',
-                             title='"ab -n 10000 -c threads (normalized)"',
-                             filepostfix="norm",
+                             title='"ab -n 10000 -c " + str(perm.nthreads) + " (normalized)"',
+                             filepostfix="requests.norm",
+                             autoticks=False,
                              scale=ref_alloc)
         
         # bar plot
-        self.barplot_single_arg("{requests}",
-                             xlabel='"threads"',
-                             ylabel='"requests/s"',
-                             filepostfix="b",
-                             title='"ab -n 10000 -c threads"')
+        # self.barplot_fixed_arg("{requests}",
+                             # xlabel='"threads"',
+                             # ylabel='"requests/s"',
+                             # filepostfix="b",
+                             # title='"ab -n 10000 -c threads"')
 
-        # bar plot
-        self.barplot_single_arg("{requests}",
-                             xlabel='"threads"',
-                             ylabel='"requests/s scaled at " + scale',
-                             title='"ab -n 10000 -c threads (normalized)"',
-                             filepostfix="norm.b.",
-                             scale=ref_alloc)
 
 httpd = Benchmark_HTTPD()
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