|
| From: | Stefan Monnier |
| Subject: | Re: Benchmarking temporary Lisp objects [Was: Re: [RFC] temporary Lisp_Strings] |
| Date: | Mon, 08 Sep 2014 09:30:15 -0400 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) |
> ==> 401 GCs, ~29.9s.
[...]
> it shows 399 GCs and ~29.6s.
1% speedup is not earth shattering, but at least this time it's a real
use-case.
> Here we just allocate 2 cons cells (32 bytes on a 64-bit system) on stack,
> and can see a measurable performance improvement.
Indeed this Fadd_text_properties business sucks. We shouldn't allocate
any cons cells at all when we set a single property.
Stefan
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