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1 #!/usr/bin/env python | 1 #!/usr/bin/env python |
2 # | 2 # |
3 # Copyright 2009 the V8 project authors. All rights reserved. | 3 # Copyright 2009 the V8 project authors. All rights reserved. |
4 # Redistribution and use in source and binary forms, with or without | 4 # Redistribution and use in source and binary forms, with or without |
5 # modification, are permitted provided that the following conditions are | 5 # modification, are permitted provided that the following conditions are |
6 # met: | 6 # met: |
7 # | 7 # |
8 # * Redistributions of source code must retain the above copyright | 8 # * Redistributions of source code must retain the above copyright |
9 # notice, this list of conditions and the following disclaimer. | 9 # notice, this list of conditions and the following disclaimer. |
10 # * Redistributions in binary form must reproduce the above | 10 # * Redistributions in binary form must reproduce the above |
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28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | 29 |
30 # This is an utility for converting V8 heap logs into .hp files that can | 30 # This is an utility for converting V8 heap logs into .hp files that can |
31 # be further processed using 'hp2ps' tool (bundled with GHC and Valgrind) | 31 # be further processed using 'hp2ps' tool (bundled with GHC and Valgrind) |
32 # to produce heap usage histograms. | 32 # to produce heap usage histograms. |
33 | 33 |
34 # Sample usage: | 34 # Sample usage: |
35 # $ ./shell --log-gc script.js | 35 # $ ./shell --log-gc script.js |
36 # $ tools/process-heap-prof.py v8.log | hp2ps -c > script-heap-graph.ps | 36 # $ tools/process-heap-prof.py v8.log | hp2ps -c > script-heap-graph.ps |
37 # ('-c' enables color, see hp2ps manual page for more options) | 37 # ('-c' enables color, see hp2ps manual page for more options) |
| 38 # or |
| 39 # $ tools/process-heap-prof.py --js-cons-profile v8.log | hp2ps -c > script-heap
-graph.ps |
| 40 # to get JS constructor profile |
| 41 |
38 | 42 |
39 import csv, sys, time | 43 import csv, sys, time |
40 | 44 |
41 def process_logfile(filename): | 45 def process_logfile(filename, itemname): |
42 first_call_time = None | 46 first_call_time = None |
43 sample_time = 0.0 | 47 sample_time = 0.0 |
44 sampling = False | 48 sampling = False |
45 try: | 49 try: |
46 logfile = open(filename, 'rb') | 50 logfile = open(filename, 'rb') |
47 try: | 51 try: |
48 logreader = csv.reader(logfile) | 52 logreader = csv.reader(logfile) |
49 | 53 |
50 print('JOB "v8"') | 54 print('JOB "v8"') |
51 print('DATE "%s"' % time.asctime(time.localtime())) | 55 print('DATE "%s"' % time.asctime(time.localtime())) |
52 print('SAMPLE_UNIT "seconds"') | 56 print('SAMPLE_UNIT "seconds"') |
53 print('VALUE_UNIT "bytes"') | 57 print('VALUE_UNIT "bytes"') |
54 | 58 |
55 for row in logreader: | 59 for row in logreader: |
56 if row[0] == 'heap-sample-begin' and row[1] == 'Heap': | 60 if row[0] == 'heap-sample-begin' and row[1] == 'Heap': |
57 sample_time = float(row[3])/1000.0 | 61 sample_time = float(row[3])/1000.0 |
58 if first_call_time == None: | 62 if first_call_time == None: |
59 first_call_time = sample_time | 63 first_call_time = sample_time |
60 sample_time -= first_call_time | 64 sample_time -= first_call_time |
61 print('BEGIN_SAMPLE %.2f' % sample_time) | 65 print('BEGIN_SAMPLE %.2f' % sample_time) |
62 sampling = True | 66 sampling = True |
63 elif row[0] == 'heap-sample-end' and row[1] == 'Heap': | 67 elif row[0] == 'heap-sample-end' and row[1] == 'Heap': |
64 print('END_SAMPLE %.2f' % sample_time) | 68 print('END_SAMPLE %.2f' % sample_time) |
65 sampling = False | 69 sampling = False |
66 elif row[0] == 'heap-sample-item' and sampling: | 70 elif row[0] == itemname and sampling: |
67 print('%s %d' % (row[1], int(row[3]))) | 71 print('%s %d' % (row[1], int(row[3]))) |
68 finally: | 72 finally: |
69 logfile.close() | 73 logfile.close() |
70 except: | 74 except: |
71 sys.exit('can\'t open %s' % filename) | 75 sys.exit('can\'t open %s' % filename) |
72 | 76 |
73 process_logfile(sys.argv[1]) | 77 if sys.argv[1] == '--js-cons-profile': |
| 78 process_logfile(sys.argv[2], 'heap-js-cons-item') |
| 79 else: |
| 80 process_logfile(sys.argv[1], 'heap-sample-item') |
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