mirror of https://github.com/ArduPilot/ardupilot
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
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#!/usr/bin/env python3
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# test ccache efficiency building two similar boards
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# AP_FLAKE8_CLEAN
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import subprocess
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import re
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import argparse
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import sys
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import os
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parser = argparse.ArgumentParser(description='test ccache performance')
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parser.add_argument('--boards', default='MatekF405,MatekF405-bdshot', help='boards to test')
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parser.add_argument('--min-cache-pct', type=int, default=75, help='minimum acceptable ccache hit rate')
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args = parser.parse_args()
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def ccache_stats():
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'''return hits/misses from ccache -s'''
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hits = 0
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miss = 0
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stats = str(subprocess.Popen(["ccache", "-s"], stdout=subprocess.PIPE).communicate()[0], encoding='ascii')
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for line in stats.split('\n'):
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m = re.match(r"cache.hit\D*(\d+)$", line)
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if m is not None:
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hits += int(m.group(1))
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m = re.match(r"cache.miss\D*(\d+)", line)
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if m is not None:
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miss += int(m.group(1))
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return (hits, miss)
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def build_board(boardname):
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subprocess.run(["./waf", "configure", "--board", boardname])
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subprocess.run(["./waf", "clean", "copter"])
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boards = args.boards.split(",")
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if len(boards) != 2:
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print(boards)
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print("Must specify exactly 2 boards (comma separated)")
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sys.exit(1)
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os.environ['CCACHE_DIR'] = os.path.join(os.getcwd(), 'build', 'ccache')
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subprocess.run(["ccache", "-C", "-z"])
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build_board(boards[0])
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subprocess.run(["ccache", "-z"])
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build_board(boards[1])
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subprocess.run(["ccache", "-s"])
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post = ccache_stats()
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hit_pct = 100 * post[0] / float(post[0]+post[1])
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print("ccache hit percentage: %.1f%% %s" % (hit_pct, post))
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if hit_pct < args.min_cache_pct:
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print("ccache hits too low, need %d%%" % args.min_cache_pct)
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sys.exit(1)
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else:
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print("ccache hits good")
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