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bug#46761: 28.0.50; Speed up json.el encoding
From: |
Basil L. Contovounesios |
Subject: |
bug#46761: 28.0.50; Speed up json.el encoding |
Date: |
Thu, 25 Feb 2021 01:33:47 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Severity: wishlist
Tags: patch
The attached patch speeds up json-encode by inserting into a buffer
rather than concatenating strings. It does so backward compatibly by
creating a new json--print-* namespace that mirrors the existing
json-encode-* namespace, cleaning it up a bit and reducing code
duplication in the process.
Using my usual benchmark from bug#40693#89:
canada.json
old (1.412693239 96 0.736882091)
new (1.154423962 32 0.248241551)
citm_catalog.json
old (0.676292855 68 0.5285956769999993)
new (0.306573098 12 0.0965493740000003)
twitter.json
old (0.353447016 40 0.28536439900000055)
new (0.142140227 8 0.05943713899999992)
Note that one of the unit tests depends on the patch to map.el in
bug#46754 in order to pass.
WDYT?
Thanks,
--
Basil
0001-Speed-up-json.el-encoding.patch
Description: Text Data