Re: [Sbcl-devel] large sbcl.core in recent versions

[William H. N. <wil...@ai...>]

On Sat, Mar 16, 2002 at 08:23:49PM -0500, Nathan Froyd wrote:
> My core file from sbcl 0.7.1.14 weighs in at about 17M.  My core file
> from my brand-new 'cvs update' version weights in at 18M.  I think the
> actual difference between the two files is around one million bytes, so
> it's not just rounding error at the boundary.
> 
> Does anybody have a recollection of changes that might have helped
> result in this?  I remember noticing the core size slowly increasing
> several minor versions ago (late 0.pre7 to 0.7.1, I think), but
> compiling with SB-KERNEL::*BYTES-CONSED-BETWEEN-GCS* set to 100 million
> made it go away temporarily.  I just finished a compile with the same
> settings, but it didn't help any.
> 
> Any guesses?

I tried rebuilding several old versions on my OpenBSD machine, all 
with my .sbclrc version of *BYTES-CONSED-BETWEEN-GCS* = 8 million.
I got
  0.7.1.47 sbcl.core = 19144704 bytes
  0.7.1.14 sbcl.core = 19017728 bytes
  0.7.1    sbcl.core = 18903040 bytes
So I wasn't able to see any dramatic difference.

Since you suggest it depends on bytes-consed-between-gcs, I wanted
to guess that the change was due to a change in that, but as far
as I recall, the only relevant change in bytes-consed-between-gcs 
for gencgc was before 0.7.0 (raising the default to 4 million).

So I don't have any idea what's going on. If I have some idle time for
my computer and my mind I might try more experiments, this time with
the default value of 4 million.

-- 
William Harold Newman <wil...@ai...>
"Now it's a couple of guys sitting in a living room with laptops. (And
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