| Safe Haskell | Trustworthy |
|---|---|
| Language | Haskell2010 |
GHC.Stats
Contents
Description
This module provides access to internal garbage collection and
memory usage statistics. These statistics are not available unless
a program is run with the -T RTS flag.
This module is GHC-only and should not be considered portable.
Since: base-4.5.0.0
Synopsis
- data RTSStats = RTSStats {
- gcs :: Word32
- major_gcs :: Word32
- allocated_bytes :: Word64
- max_live_bytes :: Word64
- max_large_objects_bytes :: Word64
- max_compact_bytes :: Word64
- max_slop_bytes :: Word64
- max_mem_in_use_bytes :: Word64
- cumulative_live_bytes :: Word64
- copied_bytes :: Word64
- par_copied_bytes :: Word64
- cumulative_par_max_copied_bytes :: Word64
- cumulative_par_balanced_copied_bytes :: Word64
- init_cpu_ns :: RtsTime
- init_elapsed_ns :: RtsTime
- mutator_cpu_ns :: RtsTime
- mutator_elapsed_ns :: RtsTime
- gc_cpu_ns :: RtsTime
- gc_elapsed_ns :: RtsTime
- cpu_ns :: RtsTime
- elapsed_ns :: RtsTime
- nonmoving_gc_sync_cpu_ns :: RtsTime
- nonmoving_gc_sync_elapsed_ns :: RtsTime
- nonmoving_gc_sync_max_elapsed_ns :: RtsTime
- nonmoving_gc_cpu_ns :: RtsTime
- nonmoving_gc_elapsed_ns :: RtsTime
- nonmoving_gc_max_elapsed_ns :: RtsTime
- gc :: GCDetails
- data GCDetails = GCDetails {
- gcdetails_gen :: Word32
- gcdetails_threads :: Word32
- gcdetails_allocated_bytes :: Word64
- gcdetails_live_bytes :: Word64
- gcdetails_large_objects_bytes :: Word64
- gcdetails_compact_bytes :: Word64
- gcdetails_slop_bytes :: Word64
- gcdetails_mem_in_use_bytes :: Word64
- gcdetails_copied_bytes :: Word64
- gcdetails_par_max_copied_bytes :: Word64
- gcdetails_par_balanced_copied_bytes :: Word64
- gcdetails_sync_elapsed_ns :: RtsTime
- gcdetails_cpu_ns :: RtsTime
- gcdetails_elapsed_ns :: RtsTime
- gcdetails_nonmoving_gc_sync_cpu_ns :: RtsTime
- gcdetails_nonmoving_gc_sync_elapsed_ns :: RtsTime
- type RtsTime = Int64
- getRTSStats :: IO RTSStats
- getRTSStatsEnabled :: IO Bool
Runtime statistics
Statistics about runtime activity since the start of the
program. This is a mirror of the C struct RTSStats in RtsAPI.h
Since: base-4.10.0.0
Constructors
| RTSStats | |
Fields
| |
Instances
Statistics about a single GC. This is a mirror of the C struct
GCDetails in RtsAPI.h, with the field prefixed with gc_ to
avoid collisions with RTSStats.
Constructors
| GCDetails | |
Fields
| |
Instances
getRTSStats :: IO RTSStats Source #
Get current runtime system statistics.
Since: base-4.10.0.0
getRTSStatsEnabled :: IO Bool Source #
Returns whether GC stats have been enabled (with +RTS -T, for example).
Since: base-4.10.0.0