在运行了大约 3 个月的 activemq 代理后,它非常慢,如下所示。当它重新启动时,它恢复正常(大约 600 毫秒 - 1000 毫秒)。
我正在寻找问题的原因。HD 速度非常快,1K rpm,IO 不多。如果您知道/(可以猜到)问题的原因和解决方案,请告诉我。
2012-08-27 19:24:06,670 | INFO | Slow KahaDB access: cleanup took 7190 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-27 21:44:14,814 | INFO | Slow KahaDB access: cleanup took 7176 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-27 23:58:15,124 | INFO | Slow KahaDB access: cleanup took 7210 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-28 02:09:03,120 | INFO | Slow KahaDB access: cleanup took 7212 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-28 04:27:46,521 | INFO | Slow KahaDB access: cleanup took 7196 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-28 06:36:38,818 | INFO | Slow KahaDB access: cleanup took 7191 | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal Checkpoint Worker
2012-08-28 08:28:09,937 | INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 7165 ms | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Transport: tcp:///127.0.0.1:39951
2012-08-28 08:29:01,715 | INFO | Slow KahaDB access: Journal append took: 18 ms, Index update took 7171 ms | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Transport: tcp:///127.0.0.1:39951
2012-08-28 08:29:26,039 | INFO | Slow KahaDB access: Journal append took: 30 ms, Index update took 7194 ms | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Transport: tcp:///127.0.0.1:39951
2012-08-28 08:29:52,283 | INFO | Slow KahaDB access: Journal append took: 7193 ms, Index update took 116 ms | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Transport: tcp:///127.0.0.1:39951
2012-08-28 08:30:12,140 | INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 7596 ms | org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Transport: tcp:///127.0.0.1:39956
2012-08-28 08:30:25,763 | INFO | Slow KahaDB access: Journal append took: 11 ms, Index update took 7760 ms |
感谢你们。