annotate src/core/ngx_murmurhash.h @ 5718:c46657e391a3
Core: slab allocator free pages defragmentation.
Large allocations from a slab pool result in free page blocks being fragmented,
eventually leading to a situation when no further allocation larger than a page
size are possible from the pool. While this isn't a problem for nginx itself,
it is known to be bad for various 3rd party modules. Fix is to merge adjacent
blocks of free pages in the ngx_slab_free_pages() function.
Prodded by Wandenberg Peixoto and Yichun Zhang.
author |
Maxim Dounin <mdounin@mdounin.ru> |
date |
Tue, 03 Jun 2014 17:53:03 +0400 |
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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7
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8 #ifndef _NGX_MURMURHASH_H_INCLUDED_
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9 #define _NGX_MURMURHASH_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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15
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16 uint32_t ngx_murmur_hash2(u_char *data, size_t len);
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19 #endif /* _NGX_MURMURHASH_H_INCLUDED_ */
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