GHC.RTS.Flags.DebugFlags.nonmoving_gc = False even though I am using the nonmoving GC
Summary
I am definitely using the nonmoving GC - when I performGC
it is instantaneous despite my large working set, and when I query for RTS Stats, I get nonmoving stats.
But when I query for my RTS flags as a sanity check, I still get told it isn't turned on:
DebugFlags
{ scheduler = False
, interpreter = False
, weak = False
, gccafs = False
, gc = False
, nonmoving_gc = False
, block_alloc = False
, sanity = False
, stable = False
, prof = False
, linker = False
, apply = False
, stm = False
, squeeze = False
, hpc = False
, sparks = False
}
Steps to reproduce
Run a program with +RTS -xn -RTS
and then inspect the result of getDebugFlags
Expected behavior
nonmoving_gc = True
should be the value
Environment
- GHC version used:
getDebugFlags
Optional:
- Operating System:
NixOS
- System Architecture:
x86