off_t st_size; /*total size, in bytes*/ unsigned long st_blksize; /*blocksize for filesystem I/O */ unsigned long st_blocks; /*number of blocks allocated*/ time_t st_atime; /* time of lastaccess*/ time_t st_mtime; /* time of last modification */ time_t st_ctime; /* time...
As you can see, the file size is reported as 9.6M. Here, the M stands for Mebibytes, not Megabytes. While both Mebibytes and Megabytes serve as units of storage, they are different in the number of bytes they represent. A Megabyte (MB) is based on the decimal system, and it represe...
char *argv[])7{8structstatfs disk_info;9char *path ="/home/";10int ret =0;11if (argc ==2)12{13 path = argv[1];14}15if (ret == statfs(path, &disk_info) == -1)16{17 fprintf(stderr,"Failed to get file disk infomation,\18errno:%u, reason...
# 创建Swap文件 $ fallocate -l 8G /mnt/swapfile # 修改权限只有根用户可以访问 $ chmod 600 /mnt/swapfile # 配置Swap文件 $ mkswap /mnt/swapfile # 开启Swap $ swapon /mnt/swapfile # 关闭SWAP $ swapoff -a && swapon -a iii.OOM(Out of Memory)杀死进程:内存紧张时系统还会通过 OOM ,直接杀...
// Print the first lineprintf("The first line is:\n");index=0;while(1){if(map[index]=='\n'){printf("\n");break;}else{printf("%c",map[index]);}index+=1;}if(munmap(map,file_stats.st_size)==-1){close(fd);perror("Error un-mmapping the file");exit(1);}close(fd);...
root@localhost:~# apt-get install rc 修改/etc/rc.local,在最后添加mlnx_qos的PFC配置并保存。修改后内容如下: root@localhost:~# cat /etc/rc.local #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit ...
dev@ubuntu:~$ cat/proc/sys/vm/oom_dump_tasks1#默认max core file size是0, 所以系统不会生成core文件 dev@ubuntu:~$ prlimit|grepCORECOREmax core file size0unlimited blocks #core dump文件的生成交给了apport,相关的设置可以参考apport的资料
getchar(); free(addr); printf("After free in thread 1\n"); getchar(); } int main() { pthread_t t1; void *s; int ret; char* addr; printf("Welcome to per thread arena example: %d\n", getpid()); printf("Before malloc in main thread\n"); ...
在官网左侧的“Get BusyBox”栏有一行“Download Source”,点击“Download Source”即可打开 BusyBox 的下载页,如下所示:从上面可以看出,目前最新的 BusyBox 版本是 1.36.1,不过本次不考虑使用最新的版本进行构建,选择一个比较新的就行,本次选择的是 busybox-1.32.0.tar.bz2。BusyBox 下载好以后我们就开始构建...
To get the byte count in a file using stat command, simply pass option-c FORMAT FILENAME/--format=FORMAT FILENAME. You can get the formats from stat command man page (man stat). The%sshows total size of the file in bytes. copystat -c %s FILENAME ...