[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] Re: #5907 Rewrite Mutable_properties based on vector<SCM>

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On Tue, Apr 14, 2020 at 8:56 AM Jonas Hahnfeld
address@hidden wrote:

This is part a series of experiments to rearchitect property
storage. None of them seem especially promising currently.

Han-Wen, is this already meant for review? If not, I propose to either delete it right away or correct title and description and set it to Needs_work.

what does 'delete' mean? Given the related discussion about
performance,, I think this code is useful to keep around in case
anyone wants to opimize get_property again.

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[issues:#5907] Rewrite Mutable_properties based on vector<SCM>

Status: Started
Created: Mon Apr 13, 2020 08:47 PM UTC by Han-Wen Nienhuys
Last Updated: Tue Apr 14, 2020 07:34 AM UTC
Owner: Han-Wen Nienhuys

Rewrite Mutable_properties based on vector<SCM>

Alists use are based on linked lists. They have poor locality, which
introduces more CPU cache misses. Since LilyPond is not multithreaded,
the CPU sits idle during these misses.

This is part a series of experiments to rearchitect property
storage. None of them seem especially promising currently.

https://codereview.appspot.com/575990043

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