bench_compare proper spacing and tab option.

https://codereview.appspot.com/6908056/

git-svn-id: http://skia.googlecode.com/svn/trunk@7468 2bbb7eff-a529-9590-31e7-b0007b416f81

diff --git a/bench/bench_compare.py b/bench/bench_compare.py
index d853358..f4f7734 100644 (file)
--- a/bench/bench_compare.py
+++ b/bench/bench_compare.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 '''
 Created on May 16, 2011
 
@@ -9,7 +10,7 @@ import bench_util
 
 def usage():
     """Prints simple usage information."""
-    
+
     print '-o <file> the old bench output file.'
     print '-n <file> the new bench output file.'
     print '-h causes headers to be output.'
@@ -28,10 +29,12 @@ def usage():
     print '  n: new time'
     print '  d: diff'
     print '  p: percent diff'
-    
+    print '-t use tab delimited format for output.'
+    print '--match <bench> only matches benches which begin with <bench>.'
+
 class BenchDiff:
     """A compare between data points produced by bench.
-    
+
     (BenchDataPoint, BenchDataPoint)"""
     def __init__(self, old, new):
         self.old = old
@@ -41,42 +44,23 @@ class BenchDiff:
         if old.time != 0:
             diffp = self.diff / old.time
         self.diffp = diffp
-    
+
     def __repr__(self):
         return "BenchDiff(%s, %s)" % (
                    str(self.new),
                    str(self.old),
                )
-        
+
 def main():
     """Parses command line and writes output."""
-    
+
     try:
-        opts, _ = getopt.getopt(sys.argv[1:], "f:o:n:s:h")
+        opts, _ = getopt.getopt(sys.argv[1:], "f:o:n:s:ht", ['match='])
     except getopt.GetoptError, err:
         print str(err) 
         usage()
         sys.exit(2)
-    
-    column_formats = {
-        'b' : '{bench: >28} ',
-        'c' : '{config: <4} ',
-        't' : '{time_type: <4} ',
-        'o' : '{old_time: >10.2f} ',
-        'n' : '{new_time: >10.2f} ',
-        'd' : '{diff: >+10.2f} ',
-        'p' : '{diffp: >+8.1%} ',
-    }
-    header_formats = {
-        'b' : '{bench: >28} ',
-        'c' : '{config: <4} ',
-        't' : '{time_type: <4} ',
-        'o' : '{old_time: >10} ',
-        'n' : '{new_time: >10} ',
-        'd' : '{diff: >10} ',
-        'p' : '{diffp: >8} ',
-    }
-    
+
     old = None
     new = None
     column_format = ""
@@ -84,7 +68,9 @@ def main():
     columns = 'bctondp'
     header = False
     stat_type = "avg"
-    
+    use_tabs = False
+    match_bench = None;
+
     for option, value in opts:
         if option == "-o":
             old = value
@@ -96,14 +82,78 @@ def main():
             columns = value
         elif option == "-s":
             stat_type = value
+        elif option == "-t":
+            use_tabs = True
+        elif option == "--match":
+            match_bench = value
         else:
             usage()
             assert False, "unhandled option"
-    
+
     if old is None or new is None:
         usage()
         sys.exit(2)
-    
+
+    old_benches = bench_util.parse({}, open(old, 'r'), stat_type)
+    new_benches = bench_util.parse({}, open(new, 'r'), stat_type)
+
+    bench_diffs = []
+    for old_bench in old_benches:
+        #filter benches by the match criteria
+        if match_bench and not old_bench.bench.startswith(match_bench):
+            continue
+
+        #filter new_benches for benches that match old_bench
+        new_bench_match = [bench for bench in new_benches
+            if old_bench.bench == bench.bench and
+               old_bench.config == bench.config and
+               old_bench.time_type == bench.time_type
+        ]
+        if (len(new_bench_match) < 1):
+            continue
+        bench_diffs.append(BenchDiff(old_bench, new_bench_match[0]))
+
+    if use_tabs:
+        column_formats = {
+            'b' : '{bench}\t',
+            'c' : '{config}\t',
+            't' : '{time_type}\t',
+            'o' : '{old_time: 0.2f}\t',
+            'n' : '{new_time: 0.2f}\t',
+            'd' : '{diff: 0.2f}\t',
+            'p' : '{diffp: 0.1%}\t',
+        }
+        header_formats = {
+            'b' : '{bench}\t',
+            'c' : '{config}\t',
+            't' : '{time_type}\t',
+            'o' : '{old_time}\t',
+            'n' : '{new_time}\t',
+            'd' : '{diff}\t',
+            'p' : '{diffp}\t',
+        }
+    else:
+        bench_max_len = max(map(lambda b: len(b.old.bench), bench_diffs))
+        config_max_len = max(map(lambda b: len(b.old.config), bench_diffs))
+        column_formats = {
+            'b' : '{bench: >%d} ' % (bench_max_len),
+            'c' : '{config: <%d} ' % (config_max_len),
+            't' : '{time_type: <4} ',
+            'o' : '{old_time: >10.2f} ',
+            'n' : '{new_time: >10.2f} ',
+            'd' : '{diff: >+10.2f} ',
+            'p' : '{diffp: >+8.1%} ',
+        }
+        header_formats = {
+            'b' : '{bench: >%d} ' % (bench_max_len),
+            'c' : '{config: <%d} ' % (config_max_len),
+            't' : '{time_type: <4} ',
+            'o' : '{old_time: >10} ',
+            'n' : '{new_time: >10} ',
+            'd' : '{diff: >10} ',
+            'p' : '{diffp: >8} ',
+        }
+
     for column_char in columns:
         if column_formats[column_char]:
             column_format += column_formats[column_char]
@@ -111,7 +161,7 @@ def main():
         else:
             usage()
             sys.exit(2)
-    
+
     if header:
         print header_format.format(
             bench='bench'
@@ -122,22 +172,7 @@ def main():
             , diff='diff'
             , diffp='diffP'
         )
-    
-    old_benches = bench_util.parse({}, open(old, 'r'), stat_type)
-    new_benches = bench_util.parse({}, open(new, 'r'), stat_type)
-    
-    bench_diffs = []
-    for old_bench in old_benches:
-        #filter new_benches for benches that match old_bench
-        new_bench_match = [bench for bench in new_benches
-            if old_bench.bench == bench.bench and
-               old_bench.config == bench.config and
-               old_bench.time_type == bench.time_type
-        ]
-        if (len(new_bench_match) < 1):
-            continue
-        bench_diffs.append(BenchDiff(old_bench, new_bench_match[0]))
-    
+
     bench_diffs.sort(key=lambda d : [d.diffp,
                                      d.old.bench,
                                      d.old.config,
@@ -153,6 +188,6 @@ def main():
             , diff=bench_diff.diff
             , diffp=bench_diff.diffp
         )
-    
+
 if __name__ == "__main__":
     main()