[Pkg-haskell-maintainers] Bug#671925: Bug#671925: cabal update fails due to stack space overflow. Stack size can't be increased.

[Shérab]

Dear Joey,

many thanks for our interest in this problem and sorry for the late
response.

> If you're comfortable with doing so, you could build your own cabal
> binary with profiling enabled,

Done. As a newbie to Haskell, I found it not very straightforward to
build the binary. Here is how I did:

apt-get source haskell-cabal-install
aptitude build-dep haskell-cabal-install
cd sources-dir
runhaskell Setup.hs configure --user --enable-executable-profiling
runhaskell Setup.hs build --ghc-option=-rtsopts=all
runhaskell Setup.hs copy
And to build, I had to install several -prof packages manually, I think
because haskell-platform-prof depends on ghc6.
I'm wondering: was there a more straightforwad way of achieving this ?

> and get some memory profiles.
> http://book.realworldhaskell.org/read/profiling-and-optimization.html

Thanks for the usefullink.
I'm including below cabal.prof
I also tried with a 100M stack: the program does not return, I
interrupted it after severalminutes...

If other memory profiles could help please do not hesitate to let me
know.

Thanks !
Sherab.

	Wed May 23 14:10 2012 Time and Allocation Profiling Report  (Final)

	   cabal +RTS -p -RTS update

	total time  =       10.55 secs   (10555 ticks @ 1000 us, 1 processor)
	total alloc = 6,305,054,568 bytes  (excludes profiling overheads)

COST CENTRE MODULE  %time %alloc

MAIN        MAIN    100.0  100.0


                                                                       individual     inherited
COST CENTRE MODULE                                   no.     entries  %time %alloc   %time %alloc

MAIN        MAIN                                     250           0  100.0  100.0   100.0  100.0
 CAF        Main                                     499           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Client.Setup                498           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Client.Config               496           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Client.FetchUtils           475           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Client.HttpUtils            470           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Client.BuildReports.Types   442           0    0.0    0.0     0.0    0.0
 CAF        Network.HTTP.Headers                     434           0    0.0    0.0     0.0    0.0
 CAF        Network.HTTP.Base                        433           0    0.0    0.0     0.0    0.0
 CAF        Network.HTTP.Utils                       427           0    0.0    0.0     0.0    0.0
 CAF        Network.BufferType                       425           0    0.0    0.0     0.0    0.0
 CAF        Network.BSD                              421           0    0.0    0.0     0.0    0.0
 CAF        Network.URI                              418           0    0.0    0.0     0.0    0.0
 CAF        Distribution.ParseUtils                  382           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Simple.Setup                372           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Simple.Utils                371           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Simple.Command              359           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Compat.TempFile             336           0    0.0    0.0     0.0    0.0
 CAF        Distribution.Text                        332           0    0.0    0.0     0.0    0.0
 CAF        System.Directory                         324           0    0.0    0.0     0.0    0.0
 CAF        GHC.Conc.Signal                          309           0    0.0    0.0     0.0    0.0
 CAF        GHC.IO.Encoding                          307           0    0.0    0.0     0.0    0.0
 CAF        GHC.IO.Exception                         306           0    0.0    0.0     0.0    0.0
 CAF        GHC.IO.Handle.FD                         304           0    0.0    0.0     0.0    0.0
 CAF        GHC.IO.FD                                285           0    0.0    0.0     0.0    0.0
 CAF        GHC.IO.Encoding.Iconv                    269           0    0.0    0.0     0.0    0.0