петак, 19. јун 2020., Ahmed Karaman <ahmedkhaledkara...@gmail.com> је написао/ла:
> Python script that prints the top N most executed functions in QEMU > using callgrind. > > Example Usage: > topN_callgrind.py -n 20 -- /path/to/qemu program -program -flags > > If '-n' is not specified, the default is 25. > > Comments similar to the one for the previous patch apply here too. Thanks, Aleksandar > Example Output: > No. Percentage Name Source File > ---- --------- ------------------ ------------------------------ > 1 24.577% 0x00000000082db000 ??? > 2 20.467% float64_mul <qemu>/fpu/softfloat.c > 3 14.720% float64_sub <qemu>/fpu/softfloat.c > 4 13.864% float64_add <qemu>/fpu/softfloat.c > 5 4.876% helper_mulsd <qemu>/target/i386/ops_sse.h > 6 3.767% helper_subsd <qemu>/target/i386/ops_sse.h > 7 3.549% helper_addsd <qemu>/target/i386/ops_sse.h > 8 2.185% helper_ucomisd <qemu>/target/i386/ops_sse.h > 9 1.667% helper_lookup_tb_ptr <qemu>/include/exec/tb-lookup.h > 10 1.662% f64_compare <qemu>/fpu/softfloat.c > 11 1.509% helper_lookup_tb_ptr <qemu>/accel/tcg/tcg-runtime.c > 12 0.635% helper_lookup_tb_ptr <qemu>/include/exec/exec-all.h > 13 0.616% float64_div <qemu>/fpu/softfloat.c > 14 0.502% helper_pand_xmm <qemu>/target/i386/ops_sse.h > 15 0.502% float64_mul <qemu>/include/fpu/softfloat.h > 16 0.476% helper_lookup_tb_ptr <qemu>/target/i386/cpu.h > 17 0.437% float64_compare_quiet <qemu>/fpu/softfloat.c > 18 0.414% helper_pxor_xmm <qemu>/target/i386/ops_sse.h > 19 0.353% round_to_int <qemu>/fpu/softfloat.c > 20 0.347% helper_cc_compute_all <qemu>/target/i386/cc_helper.c > > Signed-off-by: Ahmed Karaman <ahmedkhaledkara...@gmail.com> > --- > scripts/performance/topN_callgrind.py | 131 ++++++++++++++++++++++++++ > 1 file changed, 131 insertions(+) > create mode 100755 scripts/performance/topN_callgrind.py > > diff --git a/scripts/performance/topN_callgrind.py > b/scripts/performance/topN_callgrind.py > new file mode 100755 > index 0000000000..2cfff54c98 > --- /dev/null > +++ b/scripts/performance/topN_callgrind.py > @@ -0,0 +1,131 @@ > +#!/usr/bin/env python3 > + > +# Print the top N most executed functions in QEMU using callgrind. > +# Example Usage: > +# topN_callgrind.py -n 20 -- /path/to/qemu program -program -flags > +# > +# If '-n' is not specified, the default is 25. > +# > +# This file is a part of the project "TCG Continuous Benchmarking". > +# > +# Copyright (C) 2020 Ahmed Karaman <ahmedkhaledkara...@gmail.com> > +# Copyright (C) 2020 Aleksandar Markovic <aleksandar.qemu.devel@gmail. > com> > +# > +# This program is free software: you can redistribute it and/or modify > +# it under the terms of the GNU General Public License as published by > +# the Free Software Foundation, either version 2 of the License, or > +# (at your option) any later version. > +# > +# This program is distributed in the hope that it will be useful, > +# but WITHOUT ANY WARRANTY; without even the implied warranty of > +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > +# GNU General Public License for more details. > +# > +# You should have received a copy of the GNU General Public License > +# along with this program. If not, see <https://www.gnu.org/licenses/>. > + > +import argparse > +import os > +import subprocess > +import sys > + > + > +# Parse the command line arguments > +parser = argparse.ArgumentParser(usage=\ > + 'topN_callgrind.py [-h] [-n > TOP_FUNCTIONS] --' > + ' /path/to/qemu program -[flags > PROGRAM_FLAGS]') > + > +parser.add_argument('-n', dest='top', type=int, default=25, > + help='Specify the number of top functions to print.') > + > +parser.add_argument('command', type=str, nargs='+', > help=argparse.SUPPRESS) > + > +args = parser.parse_args() > + > +# Extract the needed variables from the args > +command = args.command > +top = args.top > + > +# Insure that valgrind is installed > +check_valgrind = subprocess.run( > + ["which", "valgrind"], stdout=subprocess.DEVNULL) > +if check_valgrind.returncode: > + sys.exit("Please install valgrind before running the script!") > + > +# Run callgrind > +callgrind = subprocess.run((["valgrind", "--tool=callgrind", > + "--callgrind-out-file=callgrind.data"] + > command), > + stdout=subprocess.DEVNULL, > stderr=subprocess.PIPE) > +if callgrind.returncode: > + sys.exit(callgrind.stderr.decode("utf-8")) > + > +# Save callgrind_annotate output to tmp.callgrind.data > +with open("tmp.callgrind.data", "w") as output: > + callgrind_annotate = subprocess.run( > + ["callgrind_annotate", "callgrind.data"], > + stdout=output, > + stderr=subprocess.PIPE) > + if callgrind_annotate.returncode: > + os.unlink('callgrind.data') > + output.close() > + os.unlink('tmp.callgrind.data') > + sys.exit(callgrind_annotate.stderr.decode("utf-8")) > + > + > +# Read the callgrind_annotate output to callgrind_data[] > +callgrind_data = [] > +with open('tmp.callgrind.data', 'r') as data: > + callgrind_data = data.readlines() > + > +# Line number with the total number of instructions > +total_instructions_line_number = 20 > + > +# Get the total number of instructions > +total_instructions_line_data = callgrind_data[total_ > instructions_line_number] > +total_number_of_instructions = total_instructions_line_data.split(' ')[0] > +total_number_of_instructions = int( > + total_number_of_instructions.replace(',', '')) > + > +# Line number with the top function > +first_func_line = 25 > + > +# Number of functions recorded by callgrind, last two lines are always > empty > +number_of_functions = len(callgrind_data) - first_func_line - 2 > + > +# Limit the number of top functions to "top" > +number_of_top_functions = (top if number_of_functions > > + top else number_of_functions) > + > +# Store the data of the top functions in top_functions[] > +top_functions = callgrind_data[first_func_line: > + first_func_line + number_of_top_functions] > + > +# Print information headers > +print('{:>4} {:>10} {:<30} {}\n{} {} {} {}'.format('No.', > + 'Percentage', > + 'Name', > + 'Source File', > + '-' * 4, > + '-' * 10, > + '-' * 30, > + '-' * 30, > + )) > + > +# Print top N functions > +for (index, function) in enumerate(top_functions, start=1): > + function_data = function.split() > + # Calculate function percentage > + function_instructions = float(function_data[0].replace(',', '')) > + function_percentage = (function_instructions / > + total_number_of_instructions)*100 > + # Get function name and source files path > + function_source_path, function_name = function_data[1].split(':') > + # Print extracted data > + print('{:>4} {:>9.3f}% {:<30} {}'.format(index, > + > round(function_percentage, 3), > + function_name, > + function_source_path)) > + > +# Remove intermediate files > +os.unlink('callgrind.data') > +os.unlink('tmp.callgrind.data') > -- > 2.17.1 > >
