Problem: testground block stats don't calculate tps directly

Solution:
- add tps calculation, extract from crypto-org-chain#1575

testground/benchmark/benchmark/stateless.py

@@ -10,7 +10,6 @@
 from typing import List
 
 import click
-import requests
 import tomlkit
 
 from .cli import ChainCommand
@@ -24,16 +23,16 @@
     patch_configs,
 )
 from .sendtx import generate_load
+from .stats import dump_block_stats
 from .topology import connect_all
 from .types import PeerPacket
-from .utils import wait_for_block, wait_for_port, wait_for_w3
+from .utils import block_height, block_txs, wait_for_block, wait_for_port, wait_for_w3
 
 # use cronosd on host machine
 LOCAL_CRONOSD_PATH = "cronosd"
 DEFAULT_CHAIN_ID = "cronos_777-1"
 # the container must be deployed with the prefixed name
 HOSTNAME_TEMPLATE = "testplan-{index}"
-LOCAL_RPC = "http://localhost:26657"
 ECHO_SERVER_PORT = 26659
 
 
@@ -309,19 +308,6 @@ def detect_idle_halted(idle_blocks: int, interval: int, chain_halt_interval=120)
                 return
 
 
-def block_height():
-    rsp = requests.get(f"{LOCAL_RPC}/status").json()
-    return int(rsp["result"]["sync_info"]["latest_block_height"])
-
-
-def block(height):
-    return requests.get(f"{LOCAL_RPC}/block?height={height}").json()
-
-
-def block_txs(height):
-    return block(height)["result"]["block"]["data"]["txs"]
-
-
 def init_node_local(
     cli: ChainCommand,
     outdir: Path,
@@ -380,16 +366,5 @@ def wait_for_peers(home: Path):
         wait_for_port(ECHO_SERVER_PORT, host=host, timeout=2400)
 
 
-def dump_block_stats(fp):
-    """
-    dump simple statistics for blocks for analysis
-    """
-    for i in range(1, block_height() + 1):
-        blk = block(i)
-        timestamp = blk["result"]["block"]["header"]["time"]
-        txs = len(blk["result"]["block"]["data"]["txs"])
-        print("block", i, txs, timestamp, file=fp)
-
-
 if __name__ == "__main__":
     cli()

testground/benchmark/benchmark/stats.py

@@ -0,0 +1,48 @@
+from datetime import datetime
+
+from .utils import block, block_height
+
+# the tps calculation use the average of the last 10 blocks
+TPS_WINDOW = 10
+
+
+def truncate_fractional_seconds(timestamp):
+    (
+        date_time_part,
+        _,
+        _,
+    ) = timestamp.partition("Z")
+    if "." in date_time_part:
+        date_time_part, fractional_part = date_time_part.split(".")
+        fractional_part = fractional_part[:6]
+        return f"{date_time_part}.{fractional_part}Z"
+    return timestamp
+
+
+def calculate_tps(blocks):
+    if len(blocks) < 2:
+        return 0
+
+    txs = sum(n for n, _ in blocks)
+    _, t1 = blocks[0]
+    _, t2 = blocks[-1]
+    return txs / (t2 - t1).total_seconds()
+
+
+def dump_block_stats(fp):
+    """
+    dump simple statistics for blocks for analysis
+    """
+    tps_list = []
+    current = block_height()
+    blocks = []
+    for i in range(1, current + 1):
+        blk = block(i)
+        timestamp = datetime.fromisoformat(blk["result"]["block"]["header"]["time"])
+        txs = len(blk["result"]["block"]["data"]["txs"])
+        blocks.append((txs, timestamp))
+        tps = calculate_tps(blocks[-TPS_WINDOW:])
+        tps_list.append(tps)
+        print("block", i, txs, timestamp, tps, file=fp)
+    tps_list.sort(reverse=True)
+    print("top_tps", tps_list[:5], file=fp)

testground/benchmark/benchmark/utils.py

@@ -4,13 +4,15 @@
 from pathlib import Path
 
 import bech32
+import requests
 import tomlkit
 import web3
 from eth_account import Account
 from hexbytes import HexBytes
 from web3._utils.transactions import fill_nonce, fill_transaction_defaults
 
 CRONOS_ADDRESS_PREFIX = "crc"
+LOCAL_RPC = "http://localhost:26657"
 
 
 def patch_dict(doc, kwargs):
@@ -139,3 +141,16 @@ def gen_account(global_seq: int, index: int) -> Account:
     index 0 is reserved for validator account.
     """
     return Account.from_key(((global_seq + 1) << 32 | index).to_bytes(32))
+
+
+def block_height():
+    rsp = requests.get(f"{LOCAL_RPC}/status").json()
+    return int(rsp["result"]["sync_info"]["latest_block_height"])
+
+
+def block(height):
+    return requests.get(f"{LOCAL_RPC}/block?height={height}").json()
+
+
+def block_txs(height):
+    return block(height)["result"]["block"]["data"]["txs"]