Hello,I have writen three append to improve logback, and tested them with log4j2 performance test. http://logging.apache.org/log4j/2.0/manual/async.html#Performance The result is Ranking: 1. Logback: Async disruptor Appender (single thread): throughput: 9,993,043 ops/sec. latency(ns): avg=3532.4 99% < 19660.8 99.99% < 16829644.8 (285431 samples) 2. Logback: Async jactor2 Appender (single thread): throughput: 9,001,575 ops/sec. latency(ns): avg=1210.0 99% < 2048.0 99.99% < 65536.0 (21476524 samples) 3. Logback: Async jactor Appender (single thread): throughput: 8,482,989 ops/sec. latency(ns): avg=1201.4 99% < 2048.0 99.99% < 65536.0 (22639435 samples) 4. Log4j2: Loggers all async (single thread): throughput: 8,394,794 ops/sec. latency(ns): avg=8631.6 99% < 13107.2 99.99% < 26869760.0 (610686 samples) 5. Log4j2: Async Appender (single thread): throughput: 7,408,055 ops/sec. latency(ns): avg=864.6 99% < 4096.0 99.99% < 131072.0 (478795 samples) 6. Logback: Async disruptor Appender (2 threads): throughput: 4,103,790 ops/sec. latency(ns): avg=884.1 99% < 4505.6 99.99% < 65536.0 (4500675 samples) 7. Log4j2: Async Appender (2 threads): throughput: 3,829,409 ops/sec. latency(ns): avg=685.1 99% < 4096.0 99.99% < 65536.0 (2034956 samples) 8. Log4j2: Async Appender (4 threads): throughput: 2,658,120 ops/sec. latency(ns): avg=607.9 99% < 2048.0 99.99% < 239206.4 (19951913 samples) 9. Log4j2: Loggers all Sync (4 threads): throughput: 2,480,657 ops/sec. latency(ns): avg=4324.3 99% < 7372.8 99.99% < 13841203.2 (6575838 samples) 10. Log4j2: Loggers all Sync (2 threads): throughput: 2,430,352 ops/sec. latency(ns): avg=651.3 99% < 2457.6 99.99% < 65536.0 (8625233 samples) 11. Logback: Async disruptor Appender (4 threads): throughput: 2,301,079 ops/sec. latency(ns): avg=7799.6 99% < 4300.8 99.99% < 24169676.8 (7478483 samples) 12. Logback: Async jactor2 Appender (2 threads): throughput: 1,739,406 ops/sec. latency(ns): avg=931.2 99% < 2048.0 99.99% < 42598.4 (48717475 samples) 13. Logback: Async jactor Appender (2 threads): throughput: 1,486,585 ops/sec. latency(ns): avg=930.7 99% < 2048.0 99.99% < 36044.8 (49685633 samples) 14. Logback: Async jactor2 Appender (4 threads): throughput: 1,340,977 ops/sec. latency(ns): avg=1253.6 99% < 1587.2 99.99% < 80281.6 (87902519 samples) 15. Logback: Async jactor Appender (4 threads): throughput: 1,159,258 ops/sec. latency(ns): avg=1020.1 99% < 1587.2 99.99% < 77004.8 (99564074 samples) my code is at https://github.com/cp149/jactor-logger hope it is useful champion