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multi: use larger dns hash table for multi interface

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Have curl_multi_init() use a much larger DNS hash table than used for
the easy interface to scale and perform better when used with _many_
host names.

curl_share_init() sets an in-between size.

Inspired-by: Ivan Tsybulin
See #9340
Closes #9376
This commit is contained in:
Daniel Stenberg 2022-08-27 14:48:13 +02:00
parent c5c6e86783
commit 7632c0d25a
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7 changed files with 18 additions and 11 deletions
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4
lib/hostip.c
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@ -1005,9 +1005,9 @@ static void freednsentry(void *freethis)
/*
* Curl_init_dnscache() inits a new DNS cache.
*/
void Curl_init_dnscache(struct Curl_hash *hash)
void Curl_init_dnscache(struct Curl_hash *hash, int size)
{
Curl_hash_init(hash, 7, Curl_hash_str, Curl_str_key_compare,
Curl_hash_init(hash, size, Curl_hash_str, Curl_str_key_compare,
freednsentry);
}