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Diffstat (limited to '3 resources/linux/filesystems/Tmpfs.md')
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1 files changed, 0 insertions, 16 deletions
diff --git a/3 resources/linux/filesystems/Tmpfs.md b/3 resources/linux/filesystems/Tmpfs.md deleted file mode 100644 index b8fe839..0000000 --- a/3 resources/linux/filesystems/Tmpfs.md +++ /dev/null @@ -1,16 +0,0 @@ -#linux #filesystem - ---- -Is a [[virtual filesystem]] that is stored in memory; it uses both RAM and swap space. -> Kernel option: CONFIG_TMPFS - -`mount -t tmpfs source target` - -A tmpfs can only grow to 50% of RAM avail. unless overridden with size=nbytes mount option. -Only consumes RAM for actual usage. -Data is ephemeral/volatile. - -Mount stacking: mount over existing /tmp, to improve speed of apps using alot of tmp files, then unmount to delete data. - -Kernel uses tmpfs for [[system v shared memory]] and [[shared anonymous memory mappings]]. -`/dev/shm` or `/run/shm`: [[glibc]] of [[POSIX]] shared memory and [[POSIX]] semaphores.
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