| //// |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| //// |
| |
| Garbage collection pauses are a common cause of latency spikes and for many systems significant effort is spent on controlling these pauses. |
| Log4j allocates temporary `LogEvent`, `String`, `char[]`, `byte[]`, etc. objects during steady state logging. |
| This contributes to pressure on the garbage collector and increases the frequency with which garbage collection pauses occur. |
| In _garbage-free mode_, Log4j buffers and reuses objects to lessen this pressure. |
