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.
49 lines
1.3 KiB
49 lines
1.3 KiB
/* |
|
** Copyright 2008 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 <stdlib.h> |
|
#include <stdio.h> |
|
#include <errno.h> |
|
#include <sys/time.h> |
|
#include <sys/uio.h> |
|
#include <unistd.h> |
|
|
|
int main(int argc, char **argv) { |
|
int i; |
|
|
|
struct timeval tv1; |
|
struct timeval tv2; |
|
long max = 0; |
|
long avg = 0; |
|
|
|
for(i = 1; ; i++) { |
|
gettimeofday(&tv1, NULL); |
|
usleep(1000); |
|
gettimeofday(&tv2, NULL); |
|
|
|
long usec = (tv2.tv_sec - tv1.tv_sec) * 1000000 + tv2.tv_usec - tv1.tv_usec; |
|
avg += usec; |
|
|
|
if (usec > max) max = usec; |
|
if (!(i % 1000)) { |
|
avg /= 1000; |
|
printf("max %ld\tavg %ld\n", max, avg); |
|
max = 0; |
|
avg = 0; |
|
} |
|
} |
|
return 0; |
|
}
|
|
|