#3167: Segmentation fault with compacting GC, and multiple threads
------------------------------+---------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Runtime System | Version: 6.8.2
Severity: major | Resolution:
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Changes (by dons):
* summary: segmentation fault => Segmentation fault with compacting GC,
and multiple threads
Comment:
Can't reproduce this with ghc 6.10.1.
It allocates about 2G and starts churning away happily:
{{{
$ ghc --make -O2 main.hs -threaded -fforce-recomp
[1 of 1] Compiling Main ( main.hs, main.o )
Linking main ...
$ ./main +RTS -A128M -s -c -N4 -RTS 5000000 500
./main 5000000 500 +RTS -A128M -s -c -N4
500
processing 1
processing 126
processing 251
processing 2
processing 3
processing 4
...
processing 486
processing 487
processing 488
processing 489
processing 490
processing 491
processing 492
processing 493
processing 494
processing 495
processing 496
processing 497
processing 498
processing 499
processing 500
256
15,191,954,480 bytes allocated in the heap
1,847,859,512 bytes copied during GC
738,284,008 bytes maximum residency (12 sample(s))
15,017,912 bytes maximum slop
3019 MB total memory in use (47 MB lost due to fragmentation)
INIT time 0.00s ( 0.03s elapsed)
MUT time 42.61s ( 44.45s elapsed)
GC time 32.33s ( 33.54s elapsed)
EXIT time 0.00s ( 0.10s elapsed)
Total time 74.88s ( 78.03s elapsed)
%GC time 43.2% (43.0% elapsed)
Alloc rate 357,005,002 bytes per MUT second
Productivity 56.8% of total user, 54.5% of total elapsed
}}}
Looks like it was fixed in GHC 6.10.x
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3167#comment:2>
GHC <http://www.haskell.org/ghc/>
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