Mercurial > hg > nginx
view src/core/ngx_murmurhash.h @ 9167:3038bd4d7816
Core: changed ngx_queue_sort() to use merge sort.
This improves nginx startup times significantly when using very large number
of locations due to computational complexity of the sorting algorithm being
used: insertion sort is O(n*n) on average, while merge sort is O(n*log(n)).
In particular, in a test configuration with 20k locations total startup
time is reduced from 8 seconds to 0.9 seconds.
Prodded by Yusuke Nojima,
https://mailman.nginx.org/pipermail/nginx-devel/2023-September/NUL3Y2FPPFSHMPTFTL65KXSXNTX3NQMK.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 18 Oct 2023 04:30:11 +0300 |
parents | 709d7d24239d |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_MURMURHASH_H_INCLUDED_ #define _NGX_MURMURHASH_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> uint32_t ngx_murmur_hash2(u_char *data, size_t len); #endif /* _NGX_MURMURHASH_H_INCLUDED_ */