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| author | Simon Marlow <marlowsd@gmail.com> | 2016-04-24 21:31:55 +0100 |
|---|---|---|
| committer | Simon Marlow <smarlow@fb.com> | 2016-05-04 05:30:30 -0700 |
| commit | f703fd6b50f0ae58bc5f5ddb927a2ce28eeaddf6 (patch) | |
| tree | 354f1ae4f9dd047c2f1f12f25e00d34ee7797e30 /includes/rts | |
| parent | 76ee260778991367b8dbf07ecf7afd31f826c824 (diff) | |
| download | haskell-f703fd6b50f0ae58bc5f5ddb927a2ce28eeaddf6.tar.gz | |
Add +RTS -AL<size>
+RTS -AL<size> controls the total size of large objects that can be
allocated before a GC is triggered. Previously this was always just the
value of -A, and the limit mainly existed to prevent runaway allocation
in pathalogical programs that allocate a lot of large objects. However,
since the limit is shared between all cores, on a large multicore the
default becomes more restrictive, and can end up triggering GC well
before it would normally have been.
Arguably a better default would be A*N, but this is probably excessive.
Adding a flag lets you choose, and I've left the default as it was.
See docs for usage.
Diffstat (limited to 'includes/rts')
| -rw-r--r-- | includes/rts/Flags.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/includes/rts/Flags.h b/includes/rts/Flags.h index 16417ce34e..d3bc001ca1 100644 --- a/includes/rts/Flags.h +++ b/includes/rts/Flags.h @@ -41,6 +41,7 @@ typedef struct _GC_FLAGS { nat maxHeapSize; /* in *blocks* */ nat minAllocAreaSize; /* in *blocks* */ + nat largeAllocLim; /* in *blocks* */ nat nurseryChunkSize; /* in *blocks* */ nat minOldGenSize; /* in *blocks* */ nat heapSizeSuggestion; /* in *blocks* */ |