Node startup performance

[sondreb]

• As the blockchain grows, the node startup time takes longer time.
• This issue can be referenced by various improvements on startup.

[sondreb]

I ran always in debug mode, one warmup before recording two runs:

Before any changes:

[2021-05-18 07:43:43.7133 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 07:44:35.6593 9] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

52 seconds

[2021-05-18 07:46:15.7802 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 07:47:06.2633 11] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

51 seconds

Fix: #338

[2021-05-18 07:51:31.1402 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 07:52:11.1038 5] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

40 seconds

[2021-05-18 07:53:29.6883 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 07:54:05.7421 9] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

42 seconds

Fix: #339

[2021-05-18 08:51:56.1037 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 08:52:45.9565 14] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

49 seconds

[2021-05-18 08:52:59.8231 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 08:53:50.0756 18] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

51 seconds

Fix: #340

[2021-05-18 11:51:44.4608 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 11:52:19.1320 8] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

35 seconds

[2021-05-18 11:52:32.8144 1] INFO: Blockcore.FullNode.Initialize Full node initialized on EXOSMain.
[2021-05-18 11:53:06.6603 7] INFO: Blockcore.AsyncWork.AsyncLoop.StartAsync PeriodicLog starting in 5 seconds.

34 seconds

---

Total: ~32 seconds of 52 seconds saved, had startups at 17-20 seconds on EXOS with all fixes applied.

[dangershony]

This is pretty good I agree