tag/Pool: enlarge hash table

This consumes more memory (plus 48 kB on 32 bit systems), but reduces the number of hash collisions, speeding up MPD startup with large databases.

tag/Pool: enlarge hash table
b267ba5f · Max Kellermann · 82700430 · b267ba5f · b267ba5f
Commit b267ba5f authored Apr 01, 2020 by Max Kellermann
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NEWS NEWS +1 -1

Pool.cxx src/tag/Pool.cxx +1 -1

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--- a/NEWS
+++ b/NEWS
 ver 0.21.22 (not yet released)
 * database
-  - simple: reduce I/O overhead while reading database file
+  - simple: optimize startup
 * input
  - curl: fix streaming errors on Android
 * playlist

--- a/src/tag/Pool.cxx
+++ b/src/tag/Pool.cxx
@@ -32,7 +32,7 @@

 Mutex tag_pool_lock;

-static constexpr size_t NUM_SLOTS = 4093;
+static constexpr size_t NUM_SLOTS = 16127;

 struct TagPoolSlot {
 	TagPoolSlot *next;