#11543: Profiling information ambiguous -------------------------------------+------------------------------------- Reporter: augustss | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Profiling | Version: 7.8.3 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #7105 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by thomie): * status: new => closed * resolution: => duplicate * component: Compiler => Profiling * related: => #7105 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11543#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11543: Profiling information ambiguous -------------------------------------+------------------------------------- Reporter: augustss | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Profiling | Version: 7.8.3 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #7105 | Differential Rev(s): Phab:D2282 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ömer Sinan Ağacan ): In [changeset:"d7933cbc28f4f094eba3d128bc147920f68c965b/ghc" d7933cbc/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="d7933cbc28f4f094eba3d128bc147920f68c965b" Show sources of cost centers in .prof This fixes the problem with duplicate cost-centre names that was reported a couple of times before. When a module implements a typeclass multiple times for different types, methods of different implementations get same cost-centre names and are reported like this: COST CENTRE MODULE %time %alloc CAF GHC.IO.Handle.FD 0.0 32.8 CAF GHC.Read 0.0 1.0 CAF GHC.IO.Encoding 0.0 1.8 showsPrec Main 0.0 1.2 readPrec Main 0.0 19.4 readPrec Main 0.0 20.5 main Main 0.0 20.2 individual inherited COST CENTRE MODULE no. entries %time %alloc %time %alloc MAIN MAIN 53 0 0.0 0.2 0.0 100.0 CAF Main 105 0 0.0 0.3 0.0 62.5 readPrec Main 109 1 0.0 0.6 0.0 0.6 readPrec Main 107 1 0.0 0.6 0.0 0.6 main Main 106 1 0.0 20.2 0.0 61.0 == Main 114 1 0.0 0.0 0.0 0.0 == Main 113 1 0.0 0.0 0.0 0.0 showsPrec Main 112 2 0.0 1.2 0.0 1.2 showsPrec Main 111 2 0.0 0.9 0.0 0.9 readPrec Main 110 0 0.0 18.8 0.0 18.8 readPrec Main 108 0 0.0 19.9 0.0 19.9 It's not possible to tell from the report which `==` took how long. This patch adds one more column at the cost of making outputs wider. The report now looks like this: COST CENTRE MODULE SRC %time %alloc CAF GHC.IO.Handle.FD <entire-module> 0.0 32.9 CAF GHC.IO.Encoding <entire-module> 0.0 1.8 CAF GHC.Read <entire-module> 0.0 1.0 showsPrec Main Main_1.hs:7:19-22 0.0 1.2 readPrec Main Main_1.hs:7:13-16 0.0 19.5 readPrec Main Main_1.hs:4:13-16 0.0 20.5 main Main Main_1.hs:(10,1)-(20,20) 0.0 20.2 individual inherited COST CENTRE MODULE SRC no. entries %time %alloc %time %alloc MAIN MAIN <built-in> 53 0 0.0 0.2 0.0 100.0 CAF Main <entire-module> 105 0 0.0 0.3 0.0 62.5 readPrec Main Main_1.hs:7:13-16 109 1 0.0 0.6 0.0 0.6 readPrec Main Main_1.hs:4:13-16 107 1 0.0 0.6 0.0 0.6 main Main Main_1.hs:(10,1)-(20,20) 106 1 0.0 20.2 0.0 61.0 == Main Main_1.hs:7:25-26 114 1 0.0 0.0 0.0 0.0 == Main Main_1.hs:4:25-26 113 1 0.0 0.0 0.0 0.0 showsPrec Main Main_1.hs:7:19-22 112 2 0.0 1.2 0.0 1.2 showsPrec Main Main_1.hs:4:19-22 111 2 0.0 0.9 0.0 0.9 readPrec Main Main_1.hs:7:13-16 110 0 0.0 18.8 0.0 18.8 readPrec Main Main_1.hs:4:13-16 108 0 0.0 19.9 0.0 19.9 CAF Text.Read.Lex <entire-module> 102 0 0.0 0.5 0.0 0.5 To fix failing test cases because of different orderings of cost centres (e.g. optimized and non-optimized build printing in different order), with this patch we also start sorting cost centres before printing. The order depends on 1) entries (more entered cost centres come first) 2) names (using strcmp() on cost centre names). Reviewers: simonmar, austin, erikd, bgamari Reviewed By: simonmar, bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2282 GHC Trac Issues: #11543, #8473, #7105 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11543#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler