Be more permissive about start when IBDing from nothing

Author: jamesob

runner/benchmarks.py

@@ -376,6 +376,12 @@ def _run(self, cfg, bench_cfg):
             start_delta = abs(client_blocks - bench_cfg.start_height)
             allowable_start_diff = 10
 
+            if bench_cfg.start_height == 0:
+                # When starting from nothing, blocks come so quickly that we may well
+                # have connected a bunch before detecting an active RPC connection.
+                # Allow for this.
+                allowable_start_diff = 500
+
             if server_blocks < bench_cfg.end_height:
                 raise RuntimeError(
                     (

runner/requirements.txt

@@ -4,6 +4,6 @@ psutil==5.7.2
 numpy==1.21.0
 matplotlib==3.3.1
 pyyaml==5.4
-pydantic==1.6.2
+pydantic==1.9.1
 distro==1.4.0
 clii==0.2.1