Ubuntu Swap Size

Home, swap encryption, that/TMP memory run with/dev/urandom, do not/dev/random, because the/dev/random startup will be very slow. (/dev/random must receive enough random factors to work, so it's slow and you have to press the keyboard when you start.) /dev/urandom is non-blocking, although security is a little bit close, but enough. ) $ cat/etc/fstab#/etc/fstab:stat ...

My 80G hard drive, a total of 3 areas, of which/10g,swap divided the 1G, the remaining 60 more g is just clear out. My filesystem not separate out, now only 1G of space, the next film is not allowed. I want to use the remaining 60 more g space, it is best to separate the filesystem, the more than 60 g to it, how should I operate? Is it okay to hang up such a large space in the filesystem? What to do? (Suppose your Ubuntu system username is wzhy, if not ...)

Modern computers use virtual memory to have more memory. Virtual memory can also help to accomplish more things. Part of the disk space can be used as an extended http://www.aliyun.com/zixun/aggregation/17967.html "> Memory space, the swap area." In a Linux system, it is possible to swap files, swap partitions, or join the two or no swap partitions. Swap partitions are a little faster than swapping files, and Linux systems ...

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The Linux system provides us with the solution, that is, the Tmpfs file system, TMPFS can use the memory directly, while not enough memory to use the swap partition to store. Also note that TMPFS is not persistent, restart data does not retain, please be sure to note, but we only use it to store cached files, even if the file is lost does not affect the site access, there is no risk. /dev/shm/is a device file that uses the Tmpfs file system (note: Under CentOS and Redhat,/dev/...)

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