Author: Maciej Fijalkowski <[email protected]>
Branch:
Changeset: r67351:4f6d0910df19
Date: 2013-10-14 12:01 +0200
http://bitbucket.org/pypy/pypy/changeset/4f6d0910df19/
Log: a tool for analysiing gc pause histograms
diff --git a/rpython/tool/gcanalyze.py b/rpython/tool/gcanalyze.py
new file mode 100755
--- /dev/null
+++ b/rpython/tool/gcanalyze.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+""" Parse gcdumps. Use by saying PYPYLOG=gc-collect:log pypy <program>
+and run it by:
+
+gcanalyze.py logfile [--plot]
+"""
+
+import sys
+from rpython.tool.logparser import parse_log
+
+NO_BUCKETS = 8
+
+def main(arg):
+ log = parse_log(open(arg).readlines())
+ all = []
+ for entry in log:
+ if entry[0].startswith('gc-collect'):
+ start = entry[1]
+ end = entry[2]
+ all.append(float(end - start) / 1000000)
+ avg = sum(all) / len(all)
+ max_t = max(all)
+ print "AVG:", "%.1fms" % avg, "MAX:", "%.1fms" % max_t
+ buckets = [0] * (NO_BUCKETS + 1)
+ for item in all:
+ bucket = int(item / max_t * NO_BUCKETS)
+ buckets[bucket] += 1
+ l1 = ["%.1fms" % ((i + 1) * max_t / NO_BUCKETS) for i in range(NO_BUCKETS)]
+ l2 = [str(i) for i in buckets[1:]]
+ for i, elem in enumerate(l1):
+ l2[i] += " " * (len(elem) - len(l2[i]))
+ print " ".join(l1)
+ print " ".join(l2)
+
+if __name__ == '__main__':
+ if len(sys.argv) < 2 or len(sys.argv) > 3:
+ print __doc__
+ sys.exit(1)
+ plot = False
+ if len(sys.argv) == 3:
+ if sys.argv[1] == '--plot':
+ plot = True
+ arg = sys.argv[2]
+ elif sys.argv[2] == '--plot':
+ plot = True
+ arg = sys.argv[1]
+ else:
+ print "Wrong command line options:", sys.argv
+ sys.exit(1)
+ else:
+ arg = sys.argv[1]
+ main(arg)
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