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# SPDX-License-Identifier: GPL-2.0
"Print out the distribution of the memory footprint of the given trace"
import argparse
import sys
import tempfile
import _damo_dist
import _damo_fmt_str
import _damo_records
def pr_dists(dists, percentiles, raw_number, nr_cols_bar, pr_all_footprints):
print('# <percentile> <footprint>')
if len(dists) == 0:
print('# no snapshot')
return
print('# avr:\t%s' % _damo_fmt_str.format_sz(
sum(dists) / len(dists), raw_number))
if pr_all_footprints:
for idx, fp in enumerate(dists):
print('%s %s' % (idx, _damo_fmt_str.format_sz(fp, raw_number)))
return
if nr_cols_bar > 0:
max_sz = 0
for percentile in percentiles:
fp_idx = int(percentile / 100.0 * len(dists))
if fp_idx == len(dists):
fp_idx -= 1
fp = dists[fp_idx]
if max_sz <= fp:
max_sz = fp
if max_sz > 0:
sz_per_col = max_sz / nr_cols_bar
else:
sz_per_col = 1
for percentile in percentiles:
idx = int(percentile / 100.0 * len(dists))
if idx == len(dists):
idx -= 1
fp = dists[idx]
line = '%3d %15s' % (percentile,
_damo_fmt_str.format_sz(fp, raw_number))
if nr_cols_bar > 0:
cols = int(fp / sz_per_col)
remaining_cols = nr_cols_bar - cols
line += ' |%s%s|' % ('*' * cols, ' ' * remaining_cols)
print(line)
def set_argparser(parser):
parser.add_argument('metric', choices=['vsz', 'rss', 'sys_used'],
help='memory footprint metric to show')
parser.add_argument('--input', '-i', type=str, metavar='<file>',
default='damon.data.mem_footprint',
help='input file name')
parser.add_argument('--range', '-r', type=int, nargs=3,
metavar=('<start>', '<stop>', '<step>'),
default=[0,101,25],
help='range of wss percentiles to print')
parser.add_argument('--sortby', '-s', choices=['time', 'size'],
default='size',
help='the metric to sort the footprints for')
parser.add_argument('--plot', '-p', type=str, metavar='<file>',
help='plot the distribution to an image file')
parser.add_argument('--nr_cols_bar', type=int, metavar='<num>',
default=59,
help='max columns of output')
parser.add_argument('--raw_number', action='store_true',
help='use machine-friendly raw numbers')
parser.add_argument('--all_footprint', action='store_true',
help='print not percentiles but all footprint values')
parser.description = 'Show distribution of memory footprint'
def main(args):
percentiles = range(args.range[0], args.range[1], args.range[2])
wss_sort = True
if args.sortby == 'time':
wss_sort = False
raw_number = args.raw_number
footprint_snapshots = _damo_records.load_mem_footprint(args.input)
dists = []
for snapshot in footprint_snapshots:
footprint_bytes = 0
for pid, fp in snapshot.footprints.items():
if args.metric == 'sys_used':
if pid is not None:
continue
footprint_bytes = (fp.total - fp.free) * 1024
# ignore SysMemFootprint
if pid is None:
continue
# todo: get real page size of the system
if args.metric == 'vsz':
footprint_bytes += fp.size * 4096
elif args.metric == 'rss':
footprint_bytes += fp.resident * 4096
dists.append(footprint_bytes)
if args.sortby == 'size':
dists.sort()
if args.plot:
orig_stdout = sys.stdout
tmp_path = tempfile.mkstemp()[1]
tmp_file = open(tmp_path, 'w')
sys.stdout = tmp_file
raw_number = True
args.nr_cols_bar = 0
pr_dists(dists, percentiles, raw_number, args.nr_cols_bar,
args.all_footprint)
if args.plot:
sys.stdout = orig_stdout
tmp_file.flush()
tmp_file.close()
xlabel = 'runtime (percent)'
if wss_sort:
xlabel = 'percentile'
err = _damo_dist.plot_dist(tmp_path, args.plot, xlabel,
'memory footprint (kilobytes)')
if err:
print('plot failed (%s)' % err)
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