TOP 命令结果:
Mem: 3991840k total, 1496328k used, 2495512k free, 156752k buffers **Swap**: 3905528k total, **3980k** used, 3901548k free, 447860k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ **SWAP** COMMAND 28250 www-data 20 0 430m 210m 21m R 63 5.4 0:07.29 **219m** apache2 28266 www-data 20 0 256m 40m 21m S 30 1.0 0:01.94 **216m** apache2 28206 www-data 20 0 260m 44m 21m S 27 1.1 0:10.27 **215m** apache2 28259 www-data 20 0 256m 40m 21m S 26 1.0 0:02.21 **216m** apache2
详细信息列表显示一组 apache2 进程正在使用大约 210m+ 的 SWAP 内存，但摘要报告仅使用了 3980k。详细列表中的总 SWAP 内存比摘要中的大得多。这两个 swap 指的是同一个东西吗？
最佳答案
引自http://www.linuxforums.org/articles/using-top-more-efficiently_89.html :
VIRT=RES+SWAP
As explained previously, VIRT includes anything inside task's address space, no matter it is in RAM, swapped out or still not loaded from disk. While RES represents total RAM consumed by this task. So, SWAP here means it represents the total amount of data being swapped out OR still not loaded from disk. Don't be fooled by the name, it doesn't just represent the swapped out data.
关于linux - 为什么 TOP 命令的详细列表中列出的 SWAP 大于摘要中的？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5196491/