You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
342 lines
9.9 KiB
342 lines
9.9 KiB
#!/usr/bin/env python |
|
|
|
# Copyright (C) 2015 The Android Open Source Project |
|
# |
|
# Licensed under the Apache License, Version 2.0 (the 'License'); |
|
# you may not use this file except in compliance with the License. |
|
# You may obtain a copy of the License at |
|
# |
|
# http://www.apache.org/licenses/LICENSE-2.0 |
|
# |
|
# Unless required by applicable law or agreed to in writing, software |
|
# distributed under the License is distributed on an 'AS IS' BASIS, |
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
# See the License for the specific language governing permissions and |
|
# limitations under the License. |
|
|
|
""" |
|
Generates storage benchmark from captured strace output. |
|
|
|
Currently assumes that all mmap'ed regions are resource accesses, and emulates as pread(). |
|
|
|
Usage: |
|
$ adb shell strace -p `pid zygote` -o /data/local/tmp/trace -f -ff -y -ttt -e trace=file,desc,munmap |
|
$ adb pull /data/local/tmp/trace* |
|
$ python benchgen.py trace.* |
|
|
|
""" |
|
|
|
import re, sys, collections, traceback, argparse |
|
|
|
from operator import itemgetter |
|
from collections import defaultdict |
|
|
|
class Event: |
|
def __init__(self, thread, time, call, args, ret): |
|
self.thread = thread |
|
self.time = time |
|
self.call = call |
|
self.args = args |
|
self.ret = ret |
|
|
|
def __repr__(self): |
|
return "%s(%s)=%s" % (self.call, repr(self.args), self.ret) |
|
|
|
|
|
class File: |
|
def __init__(self, name, ident): |
|
self.name = name |
|
self.ident = ident |
|
self.size = 0 |
|
|
|
def __repr__(self): |
|
return self.name |
|
|
|
|
|
events = [] |
|
files = {} |
|
|
|
def find_file(name): |
|
name = name.strip('<>"') |
|
if name not in files: |
|
files[name] = File(name, len(files)) |
|
return files[name] |
|
|
|
def extract_file(e, arg): |
|
if "<" in arg: |
|
fd, path = arg.split("<") |
|
path = path.strip(">") |
|
handle = "t%sf%s" % (e.thread, fd) |
|
return (fd, find_file(path), handle) |
|
else: |
|
return (None, None, None) |
|
|
|
def parse_args(s): |
|
args = [] |
|
arg = "" |
|
esc = False |
|
quot = False |
|
for c in s: |
|
if esc: |
|
esc = False |
|
arg += c |
|
continue |
|
|
|
if c == '"': |
|
if quot: |
|
quot = False |
|
continue |
|
else: |
|
quot = True |
|
continue |
|
|
|
if c == '\\': |
|
esc = True |
|
continue |
|
|
|
if c == ',' and not quot: |
|
args.append(arg.strip()) |
|
arg = "" |
|
else: |
|
arg += c |
|
|
|
args.append(arg.strip()) |
|
return args |
|
|
|
|
|
bufsize = 1048576 |
|
interesting = ["mmap2","read","write","pread64","pwrite64","fsync","fdatasync","openat","close","lseek","_llseek"] |
|
|
|
re_event = re.compile(r"^([\d\.]+) (.+?)\((.+?)\) = (.+?)$") |
|
re_arg = re.compile(r'''((?:[^,"']|"[^"]*"|'[^']*')+)''') |
|
for fn in sys.argv[1:]: |
|
with open(fn) as f: |
|
thread = int(fn.split(".")[-1]) |
|
for line in f: |
|
line = re_event.match(line) |
|
if not line: continue |
|
|
|
time, call, args, ret = line.groups() |
|
if call not in interesting: continue |
|
if "/data/" not in args: continue |
|
|
|
time = float(time) |
|
args = parse_args(args) |
|
events.append(Event(thread, time, call, args, ret)) |
|
|
|
|
|
with open("BenchmarkGen.h", 'w') as bench: |
|
print >>bench, """/* |
|
* Copyright (C) 2015 The Android Open Source Project |
|
* |
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
|
* you may not use this file except in compliance with the License. |
|
* You may obtain a copy of the License at |
|
* |
|
* http://www.apache.org/licenses/LICENSE-2.0 |
|
* |
|
* Unless required by applicable law or agreed to in writing, software |
|
* distributed under the License is distributed on an "AS IS" BASIS, |
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
* See the License for the specific language governing permissions and |
|
* limitations under the License. |
|
*/ |
|
|
|
|
|
/****************************************************************** |
|
* THIS CODE WAS GENERATED BY benchgen.py, DO NOT MODIFY DIRECTLY * |
|
******************************************************************/ |
|
|
|
|
|
#include <android-base/logging.h> |
|
|
|
#include <stdlib.h> |
|
#include <sys/types.h> |
|
#include <sys/stat.h> |
|
#include <sys/sendfile.h> |
|
#include <fcntl.h> |
|
|
|
#include <algorithm> |
|
#include <string> |
|
|
|
#include <Utils.h> |
|
|
|
namespace android { |
|
namespace vold { |
|
|
|
static status_t BenchmarkRun() { |
|
""" |
|
|
|
print >>bench, "char* buf = (char*) malloc(%d);" % (bufsize) |
|
|
|
nread = 0 |
|
nwrite = 0 |
|
nsync = 0 |
|
events = sorted(events, key=lambda e: e.time) |
|
active = set() |
|
defined = set() |
|
for e in events: |
|
if e.call == "openat": |
|
fd, f, handle = extract_file(e, e.ret) |
|
if f: |
|
active.add(handle) |
|
if handle not in defined: |
|
print >>bench, "int ", |
|
defined.add(handle) |
|
create_mode = '' |
|
if 'O_CREAT' in e.args[2]: |
|
assert len(e.args) > 3, 'File creation lacks a mode?' |
|
create_mode = ', ' + e.args[3] |
|
print >>bench, '%s = TEMP_FAILURE_RETRY(open("file%s", %s%s));' \ |
|
% (handle, f.ident, e.args[2], create_mode) |
|
|
|
elif e.call == "close": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
active.remove(handle) |
|
print >>bench, 'close(%s);' % (handle) |
|
|
|
elif e.call == "lseek": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
print >>bench, 'TEMP_FAILURE_RETRY(lseek(%s, %s, %s));' % (handle, e.args[1], e.args[2]) |
|
|
|
elif e.call == "_llseek": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
print >>bench, 'TEMP_FAILURE_RETRY(lseek(%s, %s, %s));' % (handle, e.args[1], e.args[3]) |
|
|
|
elif e.call == "read": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
# TODO: track actual file size instead of guessing |
|
count = min(int(e.args[2]), bufsize) |
|
f.size += count |
|
print >>bench, 'TEMP_FAILURE_RETRY(read(%s, buf, %d));' % (handle, count) |
|
nread += 1 |
|
|
|
elif e.call == "write": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
# TODO: track actual file size instead of guessing |
|
count = min(int(e.args[2]), bufsize) |
|
f.size += count |
|
print >>bench, 'TEMP_FAILURE_RETRY(write(%s, buf, %d));' % (handle, count) |
|
nwrite += 1 |
|
|
|
elif e.call == "pread64": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
f.size = max(f.size, int(e.args[2]) + int(e.args[3])) |
|
count = min(int(e.args[2]), bufsize) |
|
print >>bench, 'TEMP_FAILURE_RETRY(pread(%s, buf, %d, %s));' % (handle, count, e.args[3]) |
|
nread += 1 |
|
|
|
elif e.call == "pwrite64": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
f.size = max(f.size, int(e.args[2]) + int(e.args[3])) |
|
count = min(int(e.args[2]), bufsize) |
|
print >>bench, 'TEMP_FAILURE_RETRY(pwrite(%s, buf, %d, %s));' % (handle, count, e.args[3]) |
|
nwrite += 1 |
|
|
|
elif e.call == "fsync": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
print >>bench, 'TEMP_FAILURE_RETRY(fsync(%s));' % (handle) |
|
nsync += 1 |
|
|
|
elif e.call == "fdatasync": |
|
fd, f, handle = extract_file(e, e.args[0]) |
|
if handle in active: |
|
print >>bench, 'TEMP_FAILURE_RETRY(fdatasync(%s));' % (handle) |
|
nsync += 1 |
|
|
|
elif e.call == "mmap2": |
|
fd, f, handle = extract_file(e, e.args[4]) |
|
if handle in active: |
|
count = min(int(e.args[1]), bufsize) |
|
offset = int(e.args[5], 0) |
|
f.size = max(f.size, count + offset) |
|
print >>bench, 'TEMP_FAILURE_RETRY(pread(%s, buf, %s, %s)); // mmap2' % (handle, count, offset) |
|
nread += 1 |
|
|
|
for handle in active: |
|
print >>bench, 'close(%s);' % (handle) |
|
|
|
print >>bench, """ |
|
free(buf); |
|
return 0; |
|
} |
|
|
|
static status_t CreateFile(const char* name, int len) { |
|
int chunk = std::min(len, 65536); |
|
int out = -1; |
|
std::string buf; |
|
|
|
if (android::vold::ReadRandomBytes(chunk, buf) != OK) { |
|
LOG(ERROR) << "Failed to read random data"; |
|
return -EIO; |
|
} |
|
if ((out = TEMP_FAILURE_RETRY(open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644))) < 0) { |
|
PLOG(ERROR) << "Failed to open " << name; |
|
return -errno; |
|
} |
|
|
|
while (len > 0) { |
|
int n = write(out, buf.c_str(), std::min(len, chunk)); |
|
if (n < 0) { |
|
PLOG(ERROR) << "Failed to write"; |
|
close(out); |
|
return -errno; |
|
} |
|
len -= n; |
|
} |
|
|
|
close(out); |
|
return OK; |
|
} |
|
|
|
static status_t BenchmarkCreate() { |
|
status_t res = 0; |
|
res |= CreateFile("stub", 0); |
|
""" |
|
for f in files.values(): |
|
print >>bench, 'res |= CreateFile("file%s", %d);' % (f.ident, f.size) |
|
|
|
print >>bench, """ |
|
return res; |
|
} |
|
|
|
static status_t BenchmarkDestroy() { |
|
status_t res = 0; |
|
res |= unlink("stub"); |
|
""" |
|
for f in files.values(): |
|
print >>bench, 'res |= unlink("file%s");' % (f.ident) |
|
|
|
print >>bench, """ |
|
return res; |
|
} |
|
|
|
static std::string BenchmarkIdent() {""" |
|
print >>bench, """return "r%d:w%d:s%d";""" % (nread, nwrite, nsync) |
|
print >>bench, """} |
|
|
|
} // namespace vold |
|
} // namespace android |
|
""" |
|
|
|
|
|
size = sum([ f.size for f in files.values() ]) |
|
print "Found", len(files), "data files accessed, total size", (size/1024), "kB" |
|
|
|
types = defaultdict(int) |
|
for e in events: |
|
types[e.call] += 1 |
|
|
|
print "Found syscalls:" |
|
for t, n in types.iteritems(): |
|
print str(n).rjust(8), t |
|
|
|
print
|
|
|