struct mm_struct { struct { struct vm_area_struct *mmap; // 虚拟内存区域链表 struct rb_root mm_rb; // 虚拟内存区域红黑树 u64 vmacache_seqnum; /* per-thread vmacache */ #ifdef CONFIG_MMU // 在内存映射区域找到一个没有映射的区域 unsigned long (*get_unmapped_area) (struct file *fil...
24 nlink_t st_nlink; // number of hard links 25 uid_t st_uid; // user ID of owner 26 gid_t st_gid; // group ID of owner 27 dev_t st_rdev; // device ID (if special file) 28 off_t st_size; // total size, in bytes 29 blksize_t st_blksize; // blocksize for file ...
ls -l –block-size=M Read:How to find the largest files on Linux If the M suffix bothers you in some way, you can get rid of it by using –block-size=1M. file size linux If however you want to see the size in MB (10^6 bytes) instead, you should use the command with the o...
Find files named core in or below the directory /tmp and delete them, processing filenames in such a way that file or directory names containing single or double quotes, spaces or newlines are correctly handled. The -name test comes before the -type test in order to avoid having to call ...
函数分配原理最大内存其他_get_free_pages直接对页框进行操作4MB适用于分配较大量的连续物理内存kmem_cache_alloc基于 slab 机制实现128KB适合需要频繁申请释放相同大小内存块时使用kmalloc基于 kmem_cache_alloc 实现128KB最常见的分配方式,需要小于页框大小的内存时可以使用vmalloc建立非连续物理内存到虚拟地址的映射物理...
# 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...
$ddif=/dev/zero bs=4M count=10seek=20of=afile 10+0recordsin 10+0records out 41943040bytes (42MB,40MiB) copied,0.0187228s,2.2GB/s 使用du和ls -l命令查看到的文件大小不一样,因为ls -l显示的文件实际大小,并非在磁盘中的占用空间 常见文件系统 ...
Model: ATA VBOX HARDDISK (scsi) Disk /dev/sda: 53.7GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 1076MB 1075MB ext4 primary 2 1076MB 53.7GB 52.6GB ext4 primary ...
* * __wait_on_page_locked() and unlock_page() in mm/filemap.c, are the * primary users of these fields, and in mm/page_alloc.c * free_area_init_core() performs the initialization of them. */ /* 进程等待队列的散列表, 这些进程正在等待管理区中的某页 */ wait_queue_head_t *...
再用ftell获得文件指针当前位置(即文件长度)...include using namespace std; int main() { FILE* fp = NULL; int nFileLen = 0; fp = fopen("c:...man 2 stat 1.MFC中的方法:(C++) CFileStatus status; CFile::GetStatus("D:\\test.txt",status); long lSizeOfFile...; lSizeOfFile = stat...