informant: display I/O stats (#11523)

* informant: collect I/O stats for state_db

* informat: debug i/o log

* informat: remove unused cache hit ratio

* Cargo.lock: cargo update -p librocksdb-sys

* [deps]: upgrade kvdb-rocksdb to 0.6

* Update ethcore/types/src/client_types.rs

Co-Authored-By: David <dvdplm@gmail.com>

Co-authored-by: David <dvdplm@gmail.com>

util/journaldb/src/archivedb.rs

@@ -102,6 +102,10 @@ impl JournalDB for ArchiveDB {
 		Box::new(self.clone())
 	}
 
+	fn io_stats(&self) -> kvdb::IoStats {
+		self.backing.io_stats(kvdb::IoStatsKind::SincePrevious)
+	}
+
 	fn mem_used(&self) -> usize {
 		self.overlay.malloc_size_of()
 	}

util/journaldb/src/earlymergedb.rs

@@ -322,6 +322,10 @@ impl JournalDB for EarlyMergeDB {
 		Box::new(self.clone())
 	}
 
+	fn io_stats(&self) -> kvdb::IoStats {
+		self.backing.io_stats(kvdb::IoStatsKind::SincePrevious)
+	}
+
 	fn is_empty(&self) -> bool {
 		self.backing.get(self.column, &LATEST_ERA_KEY).expect("Low level database error").is_none()
 	}

util/journaldb/src/lib.rs

@@ -45,6 +45,9 @@ pub trait JournalDB: HashDB<KeccakHasher, DBValue> {
 	/// Returns heap memory size used
 	fn mem_used(&self) -> usize;
 
+	/// Returns the I/O statistics.
+	fn io_stats(&self) -> kvdb::IoStats;
+
 	/// Returns the size of journalled state in memory.
 	/// This function has a considerable speed requirement --
 	/// it must be fast enough to call several times per block imported.

util/journaldb/src/overlayrecentdb.rs

@@ -244,6 +244,10 @@ impl JournalDB for OverlayRecentDB {
 		Box::new(self.clone())
 	}
 
+	fn io_stats(&self) -> kvdb::IoStats {
+		self.backing.io_stats(kvdb::IoStatsKind::SincePrevious)
+	}
+
 	fn mem_used(&self) -> usize {
 		let mut ops = new_malloc_size_ops();
 		let mut mem = self.transaction_overlay.size_of(&mut ops);

util/journaldb/src/refcounteddb.rs

@@ -98,6 +98,10 @@ impl JournalDB for RefCountedDB {
 		Box::new(self.clone())
 	}
 
+	fn io_stats(&self) -> kvdb::IoStats {
+		self.backing.io_stats(kvdb::IoStatsKind::SincePrevious)
+	}
+
 	fn mem_used(&self) -> usize {
 		let mut ops = new_malloc_size_ops();
 		self.inserts.size_of(&mut ops) + self.removes.size_of(&mut ops)

util/migration-rocksdb/Cargo.toml

@@ -8,7 +8,7 @@ license = "GPL-3.0"
 [dependencies]
 log = "0.4"
 kvdb = "0.4.0"
-kvdb-rocksdb = "0.5.0"
+kvdb-rocksdb = "0.6.0"
 
 [dev-dependencies]
 tempdir = "0.3"