Code:
-------- Performance Metrics -------------------------------------------------
[--] Up for: 103d 6h 0m 40s (6M q [0.772 qps], 501K conn, TX: 295B, RX: 1B)
[--] Reads / Writes: 82% / 18%
[--] Total buffers: 34.0M global + 2.7M per thread (100 max threads)
[OK] Maximum possible memory usage: 729.8M (36% of installed RAM)
[OK] Slow queries: 0% (0/1K)
[OK] Highest usage of available connections: 3% (3/100)
[OK] Key buffer size / total MyISAM indexes: 200.0M/11.0M
[!!] Key buffer hit rate: 22.1% (10K cached / 8K reads)
[!!] Query cache efficiency: 14.3% (27 cached / 189 selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 30 sorts)
[OK] Temporary tables created on disk: 4% (3 on disk / 63 total)
[OK] Thread cache hit rate: 94% (3 created / 59 connections)
[OK] Table cache hit rate: 39% (865 open / 2K opened)
[OK] Open file limit used: 44% (1K/3K)
[OK] Table locks acquired immediately: 100% (1K immediate / 1K locks)
[OK] InnoDB data size / buffer pool: 12.4M/24.0M
I don't see that here.