Integrate critical task metrics in grafana dashboard

[mattsse]

Describe the feature

we have these useful metrics but don't have them in the dashboard:

reth/crates/tasks/src/metrics.rs

Lines 7 to 19 in 043b4a9

	/// Task Executor Metrics
	#[derive(Metrics, Clone)]
	#[metrics(scope = "executor.spawn")]
	pub struct TaskExecutorMetrics {
	/// Number of spawned critical tasks
	pub(crate) critical_tasks: Counter,
	/// Number of finished spawned critical tasks
	pub(crate) finished_critical_tasks: Counter,
	/// Number of spawned regular tasks
	pub(crate) regular_tasks: Counter,
	/// Number of finished spawned regular tasks
	pub(crate) finished_regular_tasks: Counter,
	}

TODO

• integrate a graph in grafana similar to

reth/etc/grafana/dashboards/reth-mempool.json

Lines 1454 to 1492 in 043b4a9

	"targets": [
	{
	"datasource": {
	"type": "prometheus",
	"uid": "${DS_PROMETHEUS}"
	},
	"editorMode": "builder",
	"expr": "rate(reth_network_pool_transactions_messages_sent{instance=~\"$instance\"}[$__rate_interval])",
	"hide": false,
	"instant": false,
	"legendFormat": "Tx",
	"range": true,
	"refId": "A"
	},
	{
	"datasource": {
	"type": "prometheus",
	"uid": "${DS_PROMETHEUS}"
	},
	"editorMode": "builder",
	"expr": "rate(reth_network_pool_transactions_messages_received{instance=~\"$instance\"}[$__rate_interval])",
	"hide": false,
	"legendFormat": "Rx",
	"range": true,
	"refId": "B"
	},
	{
	"datasource": {
	"type": "prometheus",
	"uid": "${DS_PROMETHEUS}"
	},
	"editorMode": "code",
	"expr": "reth_network_pool_transactions_messages_sent{instance=~\"$instance\"} - reth_network_pool_transactions_messages_received{instance=~\"$instance\"}",
	"hide": false,
	"legendFormat": "Messages in Channel",
	"range": true,
	"refId": "C"
	}
	],

needs #8263

Additional context

No response

[github-actions]

This issue is stale because it has been open for 21 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 7 days since being marked as stale.

[d3or]

i can take this

[greged93]

Hey @d3or I'm down to take this if you didn't have time to work on it

[d3or]

Hey! Feel free to take it :)