#9809: Overwhelming the TimerManager -------------------------------------+------------------------------------- Reporter: fryguybob | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.9 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by davean): Confirming this still occurs on 7.10.1. {{{ $ ./Main -f +RTS -s 3,260,792,712 bytes allocated in the heap 3,797,542,040 bytes copied during GC 103,056,944 bytes maximum residency (88 sample(s)) 11,062,480 bytes maximum slop 309 MB total memory in use (0 MB lost due to fragmentation) Tot time (elapsed) Avg pause Max pause Gen 0 5589 colls, 0 par 0.164s 0.160s 0.0000s 0.0004s Gen 1 88 colls, 0 par 1.844s 1.909s 0.0217s 0.0656s TASKS: 4 (1 bound, 3 peak workers (3 total), using -N1) SPARKS: 0 (0 converted, 0 overflowed, 0 dud, 0 GC'd, 0 fizzled) INIT time 0.000s ( 0.000s elapsed) MUT time 0.220s ( 0.266s elapsed) GC time 2.008s ( 2.069s elapsed) EXIT time 0.000s ( 0.000s elapsed) Total time 2.228s ( 2.335s elapsed) Alloc rate 14,821,785,054 bytes per MUT second Productivity 9.9% of total user, 9.4% of total elapsed gc_alloc_block_sync: 0 whitehole_spin: 0 gen[0].sync: 0 gen[1].sync: 0 }}} {{{ ./Main +RTS -s 182,472,160 bytes allocated in the heap 35,704,856 bytes copied during GC 3,270,336 bytes maximum residency (7 sample(s)) 89,368 bytes maximum slop 8 MB total memory in use (0 MB lost due to fragmentation) Tot time (elapsed) Avg pause Max pause Gen 0 349 colls, 0 par 0.020s 0.016s 0.0000s 0.0002s Gen 1 7 colls, 0 par 0.000s 0.008s 0.0011s 0.0020s TASKS: 4 (1 bound, 3 peak workers (3 total), using -N1) SPARKS: 0 (0 converted, 0 overflowed, 0 dud, 0 GC'd, 0 fizzled) INIT time 0.000s ( 0.000s elapsed) MUT time 0.112s ( 0.152s elapsed) GC time 0.020s ( 0.024s elapsed) EXIT time 0.000s ( 0.000s elapsed) Total time 0.132s ( 0.177s elapsed) Alloc rate 1,629,215,714 bytes per MUT second Productivity 84.8% of total user, 63.4% of total elapsed gc_alloc_block_sync: 0 whitehole_spin: 0 gen[0].sync: 0 gen[1].sync: 0 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9809#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler