1OPENSSL_LH_STATS(3ossl)             OpenSSL            OPENSSL_LH_STATS(3ossl)
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NAME

6       OPENSSL_LH_stats, OPENSSL_LH_node_stats, OPENSSL_LH_node_usage_stats,
7       OPENSSL_LH_stats_bio, OPENSSL_LH_node_stats_bio,
8       OPENSSL_LH_node_usage_stats_bio - LHASH statistics
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SYNOPSIS

11        #include <openssl/lhash.h>
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13        void OPENSSL_LH_stats(LHASH *table, FILE *out);
14        void OPENSSL_LH_node_stats(LHASH *table, FILE *out);
15        void OPENSSL_LH_node_usage_stats(LHASH *table, FILE *out);
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17        void OPENSSL_LH_stats_bio(LHASH *table, BIO *out);
18        void OPENSSL_LH_node_stats_bio(LHASH *table, BIO *out);
19        void OPENSSL_LH_node_usage_stats_bio(LHASH *table, BIO *out);
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DESCRIPTION

22       The LHASH structure records statistics about most aspects of accessing
23       the hash table.
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25       OPENSSL_LH_stats() prints out statistics on the size of the hash table
26       and how many entries are in it. For historical reasons, this function
27       also outputs a number of additional statistics, but the tracking of
28       these statistics is no longer supported and these statistics are always
29       reported as zero.
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31       OPENSSL_LH_node_stats() prints the number of entries for each 'bucket'
32       in the hash table.
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34       OPENSSL_LH_node_usage_stats() prints out a short summary of the state
35       of the hash table.  It prints the 'load' and the 'actual load'.  The
36       load is the average number of data items per 'bucket' in the hash
37       table.  The 'actual load' is the average number of items per 'bucket',
38       but only for buckets which contain entries.  So the 'actual load' is
39       the average number of searches that will need to find an item in the
40       hash table, while the 'load' is the average number that will be done to
41       record a miss.
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43       OPENSSL_LH_stats_bio(), OPENSSL_LH_node_stats_bio() and
44       OPENSSL_LH_node_usage_stats_bio() are the same as the above, except
45       that the output goes to a BIO.
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RETURN VALUES

48       These functions do not return values.
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NOTE

51       These calls should be made under a read lock. Refer to "NOTE" in
52       OPENSSL_LH_COMPFUNC(3) for more details about the locks required when
53       using the LHASH data structure.
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SEE ALSO

56       bio(7), OPENSSL_LH_COMPFUNC(3)
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59       Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved.
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61       Licensed under the Apache License 2.0 (the "License").  You may not use
62       this file except in compliance with the License.  You can obtain a copy
63       in the file LICENSE in the source distribution or at
64       <https://www.openssl.org/source/license.html>.
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683.0.9                             2023-07-27           OPENSSL_LH_STATS(3ossl)
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