System.Linux.Proc.MemInfo

Documentation

data MemInfo

A struct to contain information parsed from the `procmeminfo` file (Linux only AFAIK). Fields that are listed as being in kilobytes in the proc filesystem are converted to bytes. Not all versions of the Linux kernel make all the fields in this struct available in which case they will be assigned a value of zero.

Constructors

MemInfo

Fields

• memTotal :: !Word64

  Total physical RAM.

• memFree :: !Word64

  Total free RAM (which includes memory used for filesystem caching).

• memAvailable :: !Word64

  Available memory.

• memBuffers :: !Word64

  Amount of RAM used for file buffers.

• memSwapTotal :: !Word64

  Total amount of swap space.

• memSwapFree :: !Word64

  Amount of swap space that is free.

Instances

Eq MemInfo

Defined in System.Linux.Proc.MemInfo

Methods

(==) :: MemInfo -> MemInfo -> Bool

(/=) :: MemInfo -> MemInfo -> Bool

Show MemInfo

Defined in System.Linux.Proc.MemInfo

Methods

showsPrec :: Int -> MemInfo -> ShowS

show :: MemInfo -> String

showList :: [MemInfo] -> ShowS

readProcMemInfo :: IO (Either ProcError MemInfo)

Read the `procmeminfo` file (Linux only AFAIK) and return a MemInfo structure. Although this is in IO all exceptions and errors should be caught and returned as a ProcError.

readProcMemInfoKey :: ByteString -> IO (Either ProcError Word64)

Read the value for the given key from `procmeminfo`. Although this is in IO all exceptions and errors should be caught and returned as a ProcError.

readProcMemUsage :: IO (Either ProcError Double)

Read `procmeminfo` file and return a value calculated from:

MemAvailable / MemTotal

Although this is in IO all exceptions and errors should be caught and returned as a ProcError.

renderSizeBytes :: Word64 -> Text

Render a Word64 as an easy to read size with a bytes, kB, MB, GB TB or PB suffix.