Improve new DefaultChannelId

[jchrys]

Motivation:
The instantiation process of DefaultChannelId presents opportunities for optimization.

Modifications:
Use the local stack when creating an instance.
Employ Unsafe.

Result:
Enhanced Performance.

[jchrys]

1X10X2, Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz, openjdk 17.0.8 2023-07-18, Ubuntu 22.04.3 LTS, tuend network low-latency, no turbo boost.

benchmark result

[jchrys]

1X10X2, Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz, openjdk 17.0.8 2023-07-18, Ubuntu 22.04.3 LTS, tuend network low-latency, no turbo boost.

latest benchmark result

[chrisvest]

In Netty 5 I suspect we'll be better off to just assign instance fields (and bump the serialVersionUID) instead of encoding a byte array.

[jchrys]

In Netty 5 I suspect we'll be better off to just assign instance fields (and bump the serialVersionUID) instead of encoding a byte array.

I agree. That approach would be straightforward and could save resources by avoiding the assignment & calculation of constant values such as MACINE_ID and PROCESS_ID as well.

[chrisvest]

That approach would be straightforward and could save resources by avoiding the assignment & calculation of constant values such as MACINE_ID and PROCESS_ID as well.

There still needs to be instance fields for those, because ChannelId is Serializable, but they're just plain field assignments.

[jchrys]

There still needs to be instance fields for those, because ChannelId is Serializable, but they're just plain field assignments.

Thank you for clarifying that for me 👍

[jchrys]

@chrisvest
May I submit a PR for Netty5 based on the information above?

[chrisvest]

@jchrys Yes, please go ahead.