add blowup test

Blowup tests the described blowup problem of ptmalloc described in the
TCMalloc post.

1 files changed, 62 insertions, 0 deletions

diff --git a/src/benchmarks/blowup.py b/src/benchmarks/blowup.py
new file mode 100644
index 0000000..ad033b3
--- /dev/null
+++ b/src/benchmarks/blowup.py
@@ -0,0 +1,62 @@
+# Copyright 2018-2019 Florian Fischer <florian.fl.fischer@fau.de>
+#
+# This file is part of allocbench.
+#
+# allocbench is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# allocbench is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with allocbench.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Definition of the blowup micro benchmark"""
+
+from src.benchmark import Benchmark
+
+
+class BenchmarkBlowup(Benchmark):
+    """Blowup micro benchmark
+
+    Check if allocators reuse memory.
+    Thread behaviour:
+        1. Do many allocations and frees (100MiB is the maximum of live allocations at all times)
+        2. Start new thread
+        3. Join new thread
+    A perfect reusing allocator would need 100MiB RSS and a non reusing allocator
+    would need 1GiB.
+    """
+    def __init__(self):
+        name = "blowup"
+
+        self.cmd = "blowup"
+
+        self.requirements = ["blowup"]
+        super().__init__(name)
+
+    def summary(self):
+        # hack ideal rss in data set
+        allocators = self.results["allocators"]
+        allocators["Ideal_RSS"] = {"color": "C" + str(len(allocators) + 1)}
+        self.results["stats"]["Ideal_RSS"] = {}
+        for perm in self.iterate_args(args=self.results["args"]):
+            self.results["stats"]["Ideal_RSS"][perm] = {"mean": {"VmHWM": 1024 * 100}, 
+                                                        "std" : {"VmHWM": 0}}
+
+        self.barplot_single_arg("{VmHWM}",
+                                ylabel='"VmHWM in KB"',
+                                title='"realloc micro benchmark"',
+                                filepostfix="vmhwm")
+
+        del allocators["Ideal_RSS"]
+        del self.results["stats"]["Ideal_RSS"]
+
+        self.export_stats_to_dataref("VmHWM")
+
+
+blowup = BenchmarkBlowup()