blob: e3295888bcb29cb7909dd34acb07d61318bee457 [file] [log] [blame]
/*
* 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.
*/
#include "Benchmark.h"
#include "BenchmarkGen.h"
#include "VolumeManager.h"
#include "ResponseCode.h"
#include <base/file.h>
#include <base/logging.h>
#include <cutils/iosched_policy.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
using android::base::ReadFileToString;
using android::base::WriteStringToFile;
namespace android {
namespace vold {
static std::string simpleRead(const std::string& path) {
std::string tmp;
ReadFileToString(path, &tmp);
tmp.erase(tmp.find_last_not_of(" \n\r") + 1);
return tmp;
}
nsecs_t Benchmark(const std::string& path, const std::string& sysPath) {
errno = 0;
int orig_prio = getpriority(PRIO_PROCESS, 0);
if (errno != 0) {
PLOG(ERROR) << "Failed to getpriority";
return -1;
}
if (setpriority(PRIO_PROCESS, 0, -10) != 0) {
PLOG(ERROR) << "Failed to setpriority";
return -1;
}
IoSchedClass orig_clazz = IoSchedClass_NONE;
int orig_ioprio = 0;
if (android_get_ioprio(0, &orig_clazz, &orig_ioprio)) {
PLOG(ERROR) << "Failed to android_get_ioprio";
return -1;
}
if (android_set_ioprio(0, IoSchedClass_RT, 0)) {
PLOG(ERROR) << "Failed to android_set_ioprio";
return -1;
}
char orig_cwd[PATH_MAX];
if (getcwd(orig_cwd, PATH_MAX) == NULL) {
PLOG(ERROR) << "Failed getcwd";
return -1;
}
if (chdir(path.c_str()) != 0) {
PLOG(ERROR) << "Failed chdir";
return -1;
}
sync();
LOG(INFO) << "Benchmarking " << path;
nsecs_t start = systemTime(SYSTEM_TIME_BOOTTIME);
BenchmarkCreate();
sync();
nsecs_t create = systemTime(SYSTEM_TIME_BOOTTIME);
if (!WriteStringToFile("3", "/proc/sys/vm/drop_caches")) {
PLOG(ERROR) << "Failed to drop_caches";
}
nsecs_t drop = systemTime(SYSTEM_TIME_BOOTTIME);
BenchmarkRun();
sync();
nsecs_t run = systemTime(SYSTEM_TIME_BOOTTIME);
BenchmarkDestroy();
sync();
nsecs_t destroy = systemTime(SYSTEM_TIME_BOOTTIME);
nsecs_t create_d = create - start;
nsecs_t drop_d = drop - create;
nsecs_t run_d = run - drop;
nsecs_t destroy_d = destroy - run;
LOG(INFO) << "create took " << nanoseconds_to_milliseconds(create_d) << "ms";
LOG(INFO) << "drop took " << nanoseconds_to_milliseconds(drop_d) << "ms";
LOG(INFO) << "run took " << nanoseconds_to_milliseconds(run_d) << "ms";
LOG(INFO) << "destroy took " << nanoseconds_to_milliseconds(destroy_d) << "ms";
std::string detail;
detail += "id=" + BenchmarkIdent()
+ ",cr=" + std::to_string(create_d)
+ ",dr=" + std::to_string(drop_d)
+ ",ru=" + std::to_string(run_d)
+ ",de=" + std::to_string(destroy_d)
+ ",si=" + simpleRead(sysPath + "/size")
+ ",ve=" + simpleRead(sysPath + "/device/vendor")
+ ",mo=" + simpleRead(sysPath + "/device/model")
+ ",csd=" + simpleRead(sysPath + "/device/csd");
// Scrub CRC and serial number out of CID
std::string cid = simpleRead(sysPath + "/device/cid");
if (cid.length() == 32) {
cid.erase(32, 1);
cid.erase(18, 8);
detail += ",cid=" + cid;
}
VolumeManager::Instance()->getBroadcaster()->sendBroadcast(
ResponseCode::BenchmarkResult, detail.c_str(), false);
if (chdir(orig_cwd) != 0) {
PLOG(ERROR) << "Failed to chdir";
}
if (android_set_ioprio(0, orig_clazz, orig_ioprio)) {
PLOG(ERROR) << "Failed to android_set_ioprio";
}
if (setpriority(PRIO_PROCESS, 0, orig_prio) != 0) {
PLOG(ERROR) << "Failed to setpriority";
}
return run_d;
}
} // namespace vold
} // namespace android