#36520: Performance Regression in parse_header_params
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Reporter: David Smith | Owner: (none)
Type: Bug | Status: new
Component: HTTP handling | Version: dev
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Natalia Bidart):
Following up on your interest, Jake, here are the comparisons using the
linked implementations. All ratios are calculated against the base
`cgi`-copied implementation currently in Django 5.2.x (and real `cgi` in
3.11 and 3.12). The next step, which I'd like to know if you're interested
in, is to verify whether the comparisons with Requests and Werkzeug are
fair and whether these implementations can be considered both robust and
accurate.
||= Python 3.14 =||= `cgi` =||= `requests` =||=
`werkzeug` =||= `get_params(str)` =||= `get_params(bytes)` =||
|| ` text/plain ` || 0.257 || 0.114 🚀 -2.3x ||
0.717 🐢 2.8x || 1.664 🐢 6.5x || 1.690 🐢 6.6x ||
|| `text/html; charset=UTF-8; b...` || 1.033 || 0.494 🚀 -2.1x ||
1.538 🐢 1.5x || 3.693 🐢 3.6x || 3.907 🐢 3.8x ||
|| `application/x-stuff; title*...` || 3.866 || 0.695 🚀 -5.6x ||
1.982 🚀 -2.0x || 8.487 🐢 2.2x || 2.152 🚀 -1.8x ||
||= Python 3.13 =||= `cgi` =||= `requests` =||=
`werkzeug` =||= `get_params(str)` =||= `get_params(bytes)` =||
|| ` text/plain ` || 0.308 || 0.134 🚀 -2.3x ||
0.764 🐢 2.5x || 1.661 🐢 5.4x || 1.689 🐢 5.5x ||
|| `text/html; charset=UTF-8; b...` || 1.135 || 0.527 🚀 -2.2x ||
1.617 🐢 1.4x || 3.769 🐢 3.3x || 3.980 🐢 3.5x ||
|| `application/x-stuff; title*...` || 4.224 || 0.721 🚀 -5.9x ||
2.069 🚀 -2.0x || 9.363 🐢 2.2x || 2.164 🚀 -2.0x ||
||= Python 3.12 =||= `cgi` =||= `requests` =||=
`werkzeug` =||= `get_params(str)` =||= `get_params(bytes)` =||
|| ` text/plain ` || 0.329 || 0.136 🚀 -2.4x ||
0.756 🐢 2.3x || 1.683 🐢 5.1x || 1.816 🐢 5.5x ||
|| `text/html; charset=UTF-8; b...` || 1.441 || 0.623 🚀 -2.3x ||
1.718 🐢 1.2x || 4.599 🐢 3.2x || 4.709 🐢 3.3x ||
|| `application/x-stuff; title*...` || 1.997 || 0.827 🚀 -2.4x ||
2.199 🐢 1.1x || 9.565 🐢 4.8x || 2.521 🐢 1.3x ||
||= Python 3.11 =||= `cgi` =||= `requests` =||=
`werkzeug` =||= `get_params(str)` =||= `get_params(bytes)` =||
|| ` text/plain ` || 0.322 || 0.123 🚀 -2.6x ||
0.696 🐢 2.2x || 1.671 🐢 5.2x || 1.667 🐢 5.2x ||
|| `text/html; charset=UTF-8; b...` || 1.360 || 0.573 🚀 -2.4x ||
1.604 🐢 1.2x || 4.337 🐢 3.2x || 4.498 🐢 3.3x ||
|| `application/x-stuff; title*...` || 1.868 || 0.757 🚀 -2.5x ||
2.106 🐢 1.1x || 8.624 🐢 4.6x || 2.472 🐢 1.3x ||
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Ticket URL: <https://code.djangoproject.com/ticket/36520#comment:15>
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