While use bbr, the hz should be set to 1000000, match the bintime and timer of F-Stack. Ref #701 #702.

Author: jfb8856606

config.ini

@@ -161,7 +161,7 @@ gateway=192.168.1.1
 # FreeBSD network performance tuning configurations.
 # Most native FreeBSD configurations are supported.
 [freebsd.boot]
-# If use rack/bbr which depend HPTS, you should set a greater value of hz, such as 100000 means a tick is 10us.
+# If use rack/bbr which depend HPTS, you should set a greater value of hz, such as 1000000 means a tick is 1us.
 hz=100
 
 # Block out a range of descriptors to avoid overlap
@@ -215,3 +215,7 @@ net.inet.ip.forwarding=0
 net.inet.tcp.functions_default=freebsd
 # need by bbr, should enable it.
 net.inet.tcp.hpts.skip_swi=1
+# Interval between calls to hpts_timeout_dir. default min 250us, max 256-512ms, default 512ms.
+net.inet.tcp.hpts.minsleep=250
+# [25600-51200]
+net.inet.tcp.hpts.maxsleep=51200