Re: [Sbcl-help] Performance loss in SBCL 1.0.5

[Marc H. <mar...@un...>]

>=20
> Right, so finding the exact version changes between 1.0.2 and 1.0.3,
> and between 1.0.4 and 1.0.5.16 (which despite what your list suggests
> is not the same thing as the 1.0.5 release) would help to isolate the
> problem.  This can be done by binary section fairly easily; cvs can
> checkout the state of the repository at a given date, using the
> -D'<date>' argument to "cvs checkout"
I'll see whether I'll find the time for that...

>=20
>>> What kind of benchmark task?=20
>> A cognitive model running inside ACT-R
>=20
> What kinds of operations does this involve?  What is the bottleneck?
> Is the bottleneck in your benchmark the same in the various different
> versions of SBCL you've tried it on?
It's always hard to identify the bottleneck without profiling, so I can
only speculate.

The main operations should be string and symbol matching, plus building
some lists.