#15663: T9675 inexplicably regressed in allocations due to text submodule bump -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Description changed by bgamari: Old description:

Harbormaster somehow started showing a significant (~20%) regression in `T9675`'s allocations starting in 989dca6cbd93. Strangely, this is a bump of the `text` submodule. Something is extremely fishy here.

New description: Harbormaster somehow started showing a significant (~20%) regression in `T9675`'s allocations starting in 989dca6cbd93205a72f12a0921ba1216559a9e1e. Strangely, this is a bump of the `text` submodule. This can't be right; something is extremely fishy here. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15663#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#15663: T9675 inexplicably regressed in allocations due to text submodule bump -------------------------------------+------------------------------------- Reporter: bgamari | Owner: alpmestan Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: (none) => alpmestan Comment: Do you think you could look into this, Alp? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15663#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#15663: T9675 inexplicably regressed in allocations due to text submodule bump -------------------------------------+------------------------------------- Reporter: bgamari | Owner: alpmestan Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by alpmestan): On my machine, the test passes both at commit e40b3888d7b70bb5c95c377cac66b2839332673d (the one before the text submodule bump) and at commit 989dca6cbd93205a72f12a0921ba1216559a9e1e (the text submodule bump). Moreover, the important stats look really, really similar: || ||= before text bump =||= after text bump =|| || bytes allocated || 67745356 || 678640112 || || max bytes used || 20177520 || 18842304 || || average bytes used || 8714779 || 8859872 || || max mem in use || 77594624 || 73400320 || and it just goes on, most of those stats align. Is that submodule bump the exact moment when the problem appeared? I'm going to try with an older commit and see if the stats look similar there too. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15663#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#15663: T9675 inexplicably regressed in allocations due to text submodule bump -------------------------------------+------------------------------------- Reporter: bgamari | Owner: alpmestan Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by alpmestan): With the tip of master from an hour or two ago (d90946cea1357d3e99805c27dab1e811785a4088): || bytes allocated || 678812960 || || max bytes used || 18871352 || || average bytes used || 8865483 || || max mem in use || 73400320 || Those numbers do almost all look a bit superior to the ones I got with the commit from early september, but certainly not by 20%. What am I missing? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15663#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler