3921f7c88a
Motivation: When system is in short of entrophy, the initialization of ThreadLocalRandom can take at most 3 seconds. The initialization occurs when ThreadLocalRandom.current() is invoked first time, which might be much later than the moment when the application has started. If we start the initialization of ThreadLocalRandom as early as possible, we can reduce the perceived time taken for the retrieval. Modification: Begin the initialization of ThreadLocalRandom in InternalLoggerFactory, potentially one of the firstly initialized class in a Netty application. Make DefaultChannelId retrieve the current process ID before retrieving the current machine ID, because retrieval of a machine ID is more likely to use ThreadLocalRandom.current(). Use a dummy channel ID for EmbeddedChannel, which prevents many unit tests from creating a ThreadLocalRandom instance. Result: We gain extra 100ms at minimum for initialSeedUniquifier generation. If an application has its own initialization that takes long enough time and generates good amount of entrophy, it is very likely that we will gain a lot more. |
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pom.xml |