Re: Binary bloat in 7.10

Great sleuthing!! Thanks for pinning down whats going on! On Apr 2, 2015 8:48 PM, "Thomas Miedema" wrote:

Jeremy,

On Thu, Apr 2, 2015 at 2:12 PM, Thomas Miedema wrote:

...

Maybe `split-objs` is not applied?

That suggestion was completely misguided. Compiling with `-split-objs` makes a library _grow_ in size, but makes executables that link against it _smaller_.

Size of `libHSCabal-1.22.2.0` obtained by running `cabal install Cabal==1.22.2.0 --with-ghc=ghc-x.x.x (--enable-split-objs)`, on 64bit Ubuntu:

default --enable-split-objs 7.8.4: 19Mb 46Mb 7.10.1: 21Mb 52Mb

So the 7.10 versions are indeed somewhat larger, but I wouldn't call it ballooned or bloated. Note that a ghc build compiles the libraries with -O2 , which increases the binary size another 5% or so.

All these numbers are not far off from the ones you were getting. I think you have been comparing a 7.8.4 build of Cabal without split objects, with a 7.10.1 build of Cabal with split objects.

I don't think there is a bug here.

-Thomas

P.S. To show that binary sizes not only grow with new ghc releases, here is the same experiment with random:

`cabal install random==1.0.1.1 --with-ghc=ghc-x.x.x (--enable-split-objs)`

default --enable-split-objs 7.0.4: 0.94M 1.9M 7.2.2: 1.1M 2.1M 7.4.2: 0.86M 1.8M 7.6.3: 0.85M 1.8M 7.8.4: 0.76M 1.7M 7.10.1: 0.69M 1.6M

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