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Re: abysmally low scp performance



[There was a thread started by me on the same subject (scp throughput) 
in August 2019.]

> 1. install iperf3 and run that.
That gives me >500 Mbits/sec, about half what I would expect at best.

> 2. run netstat -s (on both machines) before and after the test, and diff them
Attached. I wouldn't know what to look for. Note that the sending host is doing 
a *lot* of other things in parallel.

> 3. receive cpu usage seems high.
All cores are >50% idle (according to top -1) on both sides (minus CPU0 on the 
sending end, which is only ~25% idle and ~25% interrupt) during scp.

Disabling HPN raises scp throughput from 10MB/s to 25MB/s. Wow.

Increasing net.inet.tcp.(send|recv)space from 32768 to 13172 (and using the 
IPv4 address of the receiving host) changes exactly nothing.

So raw througput is about half of what I'd expect, and SSH throughput is 
(with HPN disabled) about half of what I'd expect based in raw troughput.
And SSH throughput with HPN enabled is less than half of that.
--- /tmp/1	2022-07-07 16:52:07.045559789 +0200
+++ /tmp/2	2022-07-07 16:52:45.059771363 +0200
@@ -2,7 +2,7 @@
 	4726188 calls to icmp_error
 	0 errors not generated because old message was icmp
 	Output histogram:
-		echoreply: 8092134
+		echoreply: 8092146
 		unreach: 4725167
 		tstampreply: 65
 	0 messages with bad code fields
@@ -12,14 +12,14 @@
 	40533 multicast echo requests ignored
 	0 multicast timestamp requests ignored
 	Input histogram:
-		echoreply: 454395733
+		echoreply: 454396526
 		unreach: 912993
-		echo: 8132667
+		echo: 8132679
 		timxceed: 110
 		tstamp: 65
 		maskreq: 5
 		reserved_37: 2
-	8092199 message responses generated
+	8092211 message responses generated
 	0 path MTU changes
 igmp:
 	0 messages received
@@ -32,61 +32,61 @@
 	0 membership reports received for groups to which we belong
 	0 membership reports sent
 tcp:
-	27175994057 packets sent
-		24705011252 data packets (4818204214612 bytes)
+	27176526095 packets sent
+		24705538378 data packets (4818915820887 bytes)
 		75354 data packets (36086013 bytes) retransmitted
-		1309929396 ack-only packets (24807035378 delayed)
+		1309931845 ack-only packets (24807077101 delayed)
 		0 URG only packets
 		14 window probe packets
-		161441666 window update packets
-		999553154 control packets
+		161442553 window update packets
+		999554730 control packets
 		2 send attempts resulted in self-quench
-	27181888447 packets received
-		24782948109 acks (for 4815584015652 bytes)
-		151908113 duplicate acks
+	27182199075 packets received
+		24783233681 acks (for 4816295609958 bytes)
+		151908376 duplicate acks
 		0 acks for unsent data
-		25078204254 packets (5328495536521 bytes) received in-sequence
+		25078246487 packets (5328504940197 bytes) received in-sequence
 		580076 completely duplicate packets (16898713 bytes)
 		437 old duplicate packets
 		5216 packets with some dup. data (2463412 bytes duped)
-		120493495 out-of-order packets (107507515 bytes)
+		120493701 out-of-order packets (107507515 bytes)
 		556 packets (175 bytes) of data after window
 		175 window probes
-		6904466 window update packets
-		126900821 packets received after close
+		6925237 window update packets
+		126901045 packets received after close
 		0 discarded for bad checksums
 		0 discarded for bad header offset fields
 		0 discarded because packet too short
-	704117100 connection requests
-	34087135 connection accepts
-	300887450 connections established (including accepts)
-	746306603 connections closed (including 4249638 drops)
-	437199036 embryonic connections dropped
+	704118169 connection requests
+	34087186 connection accepts
+	300887968 connections established (including accepts)
+	746307735 connections closed (including 4249645 drops)
+	437199638 embryonic connections dropped
 	0 delayed frees of tcpcb
-	25029767138 segments updated rtt (of 25450611247 attempts)
-	4629035 retransmit timeouts
+	25030053144 segments updated rtt (of 25450710705 attempts)
+	4629041 retransmit timeouts
 		1139 connections dropped by rexmit timeout
 	21 persist timeouts (resulting in 0 dropped connections)
 	25132 keepalive timeouts
 		25004 keepalive probes sent
 		119 connections dropped by keepalive
-	14926979 correct ACK header predictions
-	1208996308 correct data packet header predictions
-	1427675786 PCB hash misses
-	69356504 dropped due to no socket
+	14929763 correct ACK header predictions
+	1208998684 correct data packet header predictions
+	1427678412 PCB hash misses
+	69356617 dropped due to no socket
 	1 connection drained due to memory shortage
 	29792 PMTUD blackholes detected
 	9478 bad connection attempts
-	34519058 SYN cache entries added
+	34519110 SYN cache entries added
 		0 hash collisions
-		34087135 completed
+		34087186 completed
 		0 aborted (no space to build PCB)
 		27520 timed out
 		0 dropped due to overflow
 		0 dropped due to bucket overflow
-		404403 dropped due to RST
+		404404 dropped due to RST
 		0 dropped due to ICMP unreachable
-		34491539 delayed free of SYN cache entries
+		34491591 delayed free of SYN cache entries
 	1332081 SYN,ACKs retransmitted
 	241672 duplicate SYNs received for entries already in the cache
 	1 SYN dropped (no route or no space)
@@ -96,18 +96,18 @@
 	0 packets with ECN CE bit
 	0 packets ECN ECT(0) bit
 udp:
-	4427234901 datagrams received
+	4427244241 datagrams received
 	0 with incomplete header
 	0 with bad data length field
 	16 with bad checksum
 	4726188 dropped due to no socket
-	118435251 broadcast/multicast datagrams dropped due to no socket
+	118435255 broadcast/multicast datagrams dropped due to no socket
 	44 dropped due to full socket buffers
-	4304073402 delivered
-	5608889654 PCB hash misses
-	3085906653 datagrams output
+	4304082738 delivered
+	5608901094 PCB hash misses
+	3085914088 datagrams output
 ip:
-	32250339685 total packets received
+	32250660611 total packets received
 	158 bad header checksums
 	0 with size smaller than minimum
 	30239 with data size < data length
@@ -122,13 +122,13 @@
 	0 malformed fragments dropped
 	21874 fragments dropped after timeout
 	0 packets reassembled ok
-	32005782860 packets for this host
+	32006103560 packets for this host
 	0 packets for unknown/unsupported protocol
 	0 packets forwarded (0 packets fast forwarded)
 	3264 packets not forwardable
 	0 redirects sent
 	0 packets no matching gif found
-	31027327900 packets sent from this host
+	31027868714 packets sent from this host
 	256 packets sent with fabricated ip header
 	0 output packets dropped due to no bufs, etc.
 	0 output packets discarded due to no route
@@ -218,7 +218,7 @@
 		0 ipcomp input bytes
 		0 ipcomp output bytes
 ip6:
-	451510534 total packets received
+	451511323 total packets received
 	0 with size smaller than minimum
 	0 with data size < data length
 	0 with bad options
@@ -228,13 +228,13 @@
 	0 fragments dropped after timeout
 	0 fragments that exceeded limit
 	0 packets reassembled ok
-	430659364 packets for this host
+	430660102 packets for this host
 	0 packets forwarded
 	0 packets fast forwarded
 	0 fast forward flows
-	4120941 packets not forwardable
+	4120965 packets not forwardable
 	0 redirects sent
-	452256858 packets sent from this host
+	452257621 packets sent from this host
 	0 packets sent with fabricated ip header
 	2 output packets dropped due to no bufs, etc.
 	0 output packets discarded due to no route
@@ -242,49 +242,49 @@
 	0 fragments created
 	0 datagrams that can't be fragmented
 	0 packets that violated scope rules
-	4063508 multicast packets which we don't join
+	4063532 multicast packets which we don't join
 	Input packet histogram:
 		hop by hop: 5602
-		TCP: 66782149
-		UDP: 336473810
+		TCP: 66782198
+		UDP: 336474460
 		fragment: 58
-		ICMP6: 47299921
+		ICMP6: 47300011
 	Mbuf statistics:
-		229620506 one mbufs
+		229621009 one mbufs
 		two or more mbuf:
-			lo0 = 10066550
-		211823478 one ext mbufs
+			lo0 = 10066563
+		211823751 one ext mbufs
 		0 two or more ext mbufs
 	0 packets whose headers are not continuous
 	0 tunneling packets that can't find gif
 	0 packets discarded due to too many headers
 	0 failures of source address selection
-	377502619 forward cache hit
-	67380661 forward cache miss
+	377503274 forward cache hit
+	67380768 forward cache miss
 icmp6:
 	10952 calls to icmp6_error
 	6 errors not generated because old message was icmp6 or so
 	0 errors not generated because of rate limitation
 	Output packet histogram:
 		unreach: 2427
-		echo: 27405718
-		echo reply: 2107248
+		echo: 27405757
+		echo reply: 2107253
 		multicast listener report: 147
-		neighbor solicitation: 6260423
-		neighbor advertisement: 5867884
+		neighbor solicitation: 6260432
+		neighbor advertisement: 5867894
 	0 messages with bad code fields
 	0 messages < minimum length
 	0 bad checksums
 	0 messages with bad length
 	Input packet histogram:
 		unreach: 7221
-		echo: 2107248
-		echo reply: 27404167
+		echo: 2107253
+		echo reply: 27404206
 		multicast listener query: 1
 		multicast listener report: 209
-		router advertisement: 1229290
-		neighbor solicitation: 5867884
-		neighbor advertisement: 6568268
+		router advertisement: 1229293
+		neighbor solicitation: 5867894
+		neighbor advertisement: 6568277
 		redirect: 1346
 		node information request: 3
 	Histogram of error messages to be generated:
@@ -301,7 +301,7 @@
 		0 unrecognized option
 		0 redirect
 		0 unknown
-	2107248 message responses generated
+	2107253 message responses generated
 	0 messages with too many ND options
 	0 messages with bad ND options
 	0 bad neighbor solicitation messages
@@ -312,61 +312,61 @@
 	1346 bad redirect messages
 	0 path MTU changes
 tcp6:
-	27175994079 packets sent
-		24705011274 data packets (4818204220673 bytes)
+	27176526096 packets sent
+		24705538379 data packets (4818915820907 bytes)
 		75354 data packets (36086013 bytes) retransmitted
-		1309929397 ack-only packets (24807035400 delayed)
+		1309931845 ack-only packets (24807077102 delayed)
 		0 URG only packets
 		14 window probe packets
-		161441666 window update packets
-		999553154 control packets
+		161442553 window update packets
+		999554730 control packets
 		2 send attempts resulted in self-quench
-	27181888470 packets received
-		24782948131 acks (for 4815584020153 bytes)
-		151908113 duplicate acks
+	27182199076 packets received
+		24783233682 acks (for 4816295611572 bytes)
+		151908376 duplicate acks
 		0 acks for unsent data
-		25078204277 packets (5328495543836 bytes) received in-sequence
+		25078246488 packets (5328504940217 bytes) received in-sequence
 		580076 completely duplicate packets (16898713 bytes)
 		437 old duplicate packets
 		5216 packets with some dup. data (2463412 bytes duped)
-		120493495 out-of-order packets (107507515 bytes)
+		120493701 out-of-order packets (107507515 bytes)
 		556 packets (175 bytes) of data after window
 		175 window probes
-		6904466 window update packets
-		126900821 packets received after close
+		6925237 window update packets
+		126901045 packets received after close
 		0 discarded for bad checksums
 		0 discarded for bad header offset fields
 		0 discarded because packet too short
-	704117100 connection requests
-	34087135 connection accepts
-	300887450 connections established (including accepts)
-	746306603 connections closed (including 4249638 drops)
-	437199036 embryonic connections dropped
+	704118169 connection requests
+	34087186 connection accepts
+	300887968 connections established (including accepts)
+	746307735 connections closed (including 4249645 drops)
+	437199638 embryonic connections dropped
 	0 delayed frees of tcpcb
-	25029767160 segments updated rtt (of 25450611269 attempts)
-	4629035 retransmit timeouts
+	25030053145 segments updated rtt (of 25450710706 attempts)
+	4629041 retransmit timeouts
 		1139 connections dropped by rexmit timeout
 	21 persist timeouts (resulting in 0 dropped connections)
 	25132 keepalive timeouts
 		25004 keepalive probes sent
 		119 connections dropped by keepalive
-	14926979 correct ACK header predictions
-	1208996309 correct data packet header predictions
-	1427675787 PCB hash misses
-	69356504 dropped due to no socket
+	14929763 correct ACK header predictions
+	1208998684 correct data packet header predictions
+	1427678412 PCB hash misses
+	69356617 dropped due to no socket
 	1 connection drained due to memory shortage
 	29792 PMTUD blackholes detected
 	9478 bad connection attempts
-	34519058 SYN cache entries added
+	34519110 SYN cache entries added
 		0 hash collisions
-		34087135 completed
+		34087186 completed
 		0 aborted (no space to build PCB)
 		27520 timed out
 		0 dropped due to overflow
 		0 dropped due to bucket overflow
-		404403 dropped due to RST
+		404404 dropped due to RST
 		0 dropped due to ICMP unreachable
-		34491539 delayed free of SYN cache entries
+		34491591 delayed free of SYN cache entries
 	1332081 SYN,ACKs retransmitted
 	241672 duplicate SYNs received for entries already in the cache
 	1 SYN dropped (no route or no space)
@@ -376,7 +376,7 @@
 	0 packets with ECN CE bit
 	0 packets ECN ECT(0) bit
 udp6:
-	336472813 datagrams received
+	336473463 datagrams received
 	0 with incomplete header
 	0 with bad data length field
 	0 with bad checksum
@@ -384,8 +384,8 @@
 	1959 dropped due to no socket
 	0 multicast datagrams dropped due to no socket
 	5389 dropped due to full socket buffers
-	336465465 delivered
-	339178930 datagrams output
+	336466115 delivered
+	339179580 datagrams output
 ipsec6:
 	0 no SA found (output)
 	0 no memory available (output)
@@ -485,17 +485,17 @@
 	0 delivered
 	0 datagrams output
 arp:
-	244851501 packets sent
-		31719880 reply packets
-		213131621 request packets
-	437912311 packets received
-		1562836 reply packets
-		436293701 valid request packets
-		412705474 broadcast/multicast packets
+	244851880 packets sent
+		31719914 reply packets
+		213131966 request packets
+	437912963 packets received
+		1562837 reply packets
+		436294352 valid request packets
+		412706111 broadcast/multicast packets
 		0 packets with unknown protocol type
 		197 packets with bad (short) length
 		55577 packets with null target IP address
-		1625333 packets with null source IP address
+		1625339 packets with null source IP address
 		0 could not be mapped to an interface
 		0 packets sourced from a local hardware address
 		0 packets with a broadcast source hardware address
@@ -504,9 +504,9 @@
 		0 packets received on wrong interface
 		36 entrys overwritten
 		0 changes in hardware address length
-	215899604 packets deferred pending ARP resolution
-		1545757 sent
-		214353847 dropped
+	215899949 packets deferred pending ARP resolution
+		1545758 sent
+		214354191 dropped
 	0 failures to allocate llinfo
 pfkey:
 	0 requests sent from userland
--- /tmp/1	2022-07-07 16:52:14.203108889 +0200
+++ /tmp/2	2022-07-07 16:52:49.196496403 +0200
@@ -2,7 +2,7 @@
 	169 calls to icmp_error
 	0 errors not generated because old message was icmp
 	Output histogram:
-		echoreply: 72581
+		echoreply: 72593
 		unreach: 169
 	0 messages with bad code fields
 	0 messages < minimum length
@@ -12,8 +12,8 @@
 	0 multicast timestamp requests ignored
 	Input histogram:
 		unreach: 1568
-		echo: 72581
-	72581 message responses generated
+		echo: 72593
+	72593 message responses generated
 	0 path MTU changes
 igmp:
 	0 messages received
@@ -26,20 +26,20 @@
 	0 membership reports received for groups to which we belong
 	0 membership reports sent
 tcp:
-	17303018 packets sent
-		1794033 data packets (898581337 bytes)
+	17567901 packets sent
+		1794100 data packets (898597908 bytes)
 		355 data packets (218209 bytes) retransmitted
-		12958505 ack-only packets (13761460 delayed)
+		13200179 ack-only packets (14005534 delayed)
 		0 URG only packets
 		0 window probe packets
-		2473253 window update packets
-		76900 control packets
+		2496392 window update packets
+		76903 control packets
 		0 send attempts resulted in self-quench
-	27236405 packets received
-		1597951 acks (for 889089978 bytes)
-		40003 duplicate acks
+	27722208 packets received
+		1598020 acks (for 889105437 bytes)
+		40005 duplicate acks
 		0 acks for unsent data
-		26578707 packets (35599096684 bytes) received in-sequence
+		27064444 packets (36302358309 bytes) received in-sequence
 		186 completely duplicate packets (24162 bytes)
 		1 old duplicate packet
 		12 packets with some dup. data (1002 bytes duped)
@@ -47,17 +47,17 @@
 		0 packets (0 bytes) of data after window
 		0 window probes
 		17468 window update packets
-		61 packets received after close
+		62 packets received after close
 		0 discarded for bad checksums
 		0 discarded for bad header offset fields
 		0 discarded because packet too short
 	33767 connection requests
-	18492 connection accepts
-	52203 connections established (including accepts)
-	98349 connections closed (including 10602 drops)
+	18495 connection accepts
+	52206 connections established (including accepts)
+	98360 connections closed (including 10602 drops)
 	56 embryonic connections dropped
 	0 delayed frees of tcpcb
-	1631238 segments updated rtt (of 1459800 attempts)
+	1631307 segments updated rtt (of 1459865 attempts)
 	1718 retransmit timeouts
 		5 connections dropped by rexmit timeout
 	0 persist timeouts (resulting in 0 dropped connections)
@@ -65,22 +65,22 @@
 		0 keepalive probes sent
 		0 connections dropped by keepalive
 	1225 correct ACK header predictions
-	25478821 correct data packet header predictions
-	510854 PCB hash misses
+	25964427 correct data packet header predictions
+	996578 PCB hash misses
 	15 dropped due to no socket
 	0 connections drained due to memory shortage
 	13 PMTUD blackholes detected
-	90 bad connection attempts
-	19333 SYN cache entries added
+	92 bad connection attempts
+	19336 SYN cache entries added
 		0 hash collisions
-		18492 completed
+		18495 completed
 		0 aborted (no space to build PCB)
 		0 timed out
 		0 dropped due to overflow
 		0 dropped due to bucket overflow
 		841 dropped due to RST
 		0 dropped due to ICMP unreachable
-		19333 delayed free of SYN cache entries
+		19336 delayed free of SYN cache entries
 	342 SYN,ACKs retransmitted
 	25 duplicate SYNs received for entries already in the cache
 	0 SYNs dropped (no route or no space)
@@ -90,18 +90,18 @@
 	0 packets with ECN CE bit
 	0 packets ECN ECT(0) bit
 udp:
-	447259 datagrams received
+	447266 datagrams received
 	0 with incomplete header
 	0 with bad data length field
 	0 with bad checksum
 	169 dropped due to no socket
 	373590 broadcast/multicast datagrams dropped due to no socket
 	0 dropped due to full socket buffers
-	73500 delivered
-	388237 PCB hash misses
-	324301 datagrams output
+	73507 delivered
+	388240 PCB hash misses
+	324339 datagrams output
 ip:
-	12182844 total packets received
+	12668862 total packets received
 	0 bad header checksums
 	0 with size smaller than minimum
 	0 with data size < data length
@@ -116,13 +116,13 @@
 	0 malformed fragments dropped
 	577 fragments dropped after timeout
 	0 packets reassembled ok
-	8557741 packets for this host
+	9043563 packets for this host
 	0 packets for unknown/unsupported protocol
 	0 packets forwarded (0 packets fast forwarded)
 	31 packets not forwardable
 	0 redirects sent
 	0 packets no matching gif found
-	5693759 packets sent from this host
+	5958695 packets sent from this host
 	0 packets sent with fabricated ip header
 	0 output packets dropped due to no bufs, etc.
 	0 output packets discarded due to no route
@@ -212,7 +212,7 @@
 		0 ipcomp input bytes
 		0 ipcomp output bytes
 ip6:
-	19338844 total packets received
+	19338867 total packets received
 	0 with size smaller than minimum
 	0 with data size < data length
 	0 with bad options
@@ -222,13 +222,13 @@
 	0 fragments dropped after timeout
 	0 fragments that exceeded limit
 	0 packets reassembled ok
-	19273121 packets for this host
+	19273135 packets for this host
 	0 packets forwarded
 	0 packets fast forwarded
 	0 fast forward flows
 	7118 packets not forwardable
 	0 redirects sent
-	12128000 packets sent from this host
+	12128021 packets sent from this host
 	0 packets sent with fabricated ip header
 	2 output packets dropped due to no bufs, etc.
 	0 output packets discarded due to no route
@@ -239,40 +239,40 @@
 	5878 multicast packets which we don't join
 	Input packet histogram:
 		TCP: 19200072
-		UDP: 73049
-		ICMP6: 65024
+		UDP: 73063
+		ICMP6: 65033
 	Mbuf statistics:
-		46184 one mbufs
+		46193 one mbufs
 		two or more mbuf:
-			lo0 = 19616
-		19273044 one ext mbufs
+			lo0 = 19620
+		19273054 one ext mbufs
 		0 two or more ext mbufs
 	0 packets whose headers are not continuous
 	0 tunneling packets that can't find gif
 	0 packets discarded due to too many headers
 	0 failures of source address selection
-	19302667 forward cache hit
-	18517 forward cache miss
+	19302684 forward cache hit
+	18521 forward cache miss
 icmp6:
 	80 calls to icmp6_error
 	1 error not generated because old message was icmp6 or so
 	0 errors not generated because of rate limitation
 	Output packet histogram:
 		unreach: 24
-		echo reply: 20096
+		echo reply: 20101
 		multicast listener report: 112
-		neighbor solicitation: 13684
-		neighbor advertisement: 13289
+		neighbor solicitation: 13685
+		neighbor advertisement: 13290
 	0 messages with bad code fields
 	0 messages < minimum length
 	0 bad checksums
 	0 messages with bad length
 	Input packet histogram:
 		unreach: 47
-		echo: 20096
-		router advertisement: 5300
-		neighbor solicitation: 13289
-		neighbor advertisement: 19166
+		echo: 20101
+		router advertisement: 5302
+		neighbor solicitation: 13290
+		neighbor advertisement: 19167
 		redirect: 8
 	Histogram of error messages to be generated:
 		0 no route
@@ -288,7 +288,7 @@
 		0 unrecognized option
 		0 redirect
 		0 unknown
-	20096 message responses generated
+	20101 message responses generated
 	0 messages with too many ND options
 	0 messages with bad ND options
 	0 bad neighbor solicitation messages
@@ -299,20 +299,20 @@
 	8 bad redirect messages
 	0 path MTU changes
 tcp6:
-	17303018 packets sent
-		1794033 data packets (898581337 bytes)
+	17567901 packets sent
+		1794100 data packets (898597908 bytes)
 		355 data packets (218209 bytes) retransmitted
-		12958505 ack-only packets (13761460 delayed)
+		13200179 ack-only packets (14005534 delayed)
 		0 URG only packets
 		0 window probe packets
-		2473253 window update packets
-		76900 control packets
+		2496392 window update packets
+		76903 control packets
 		0 send attempts resulted in self-quench
-	27236405 packets received
-		1597951 acks (for 889089978 bytes)
-		40003 duplicate acks
+	27722208 packets received
+		1598020 acks (for 889105437 bytes)
+		40005 duplicate acks
 		0 acks for unsent data
-		26578707 packets (35599096684 bytes) received in-sequence
+		27064444 packets (36302358309 bytes) received in-sequence
 		186 completely duplicate packets (24162 bytes)
 		1 old duplicate packet
 		12 packets with some dup. data (1002 bytes duped)
@@ -320,17 +320,17 @@
 		0 packets (0 bytes) of data after window
 		0 window probes
 		17468 window update packets
-		61 packets received after close
+		62 packets received after close
 		0 discarded for bad checksums
 		0 discarded for bad header offset fields
 		0 discarded because packet too short
 	33767 connection requests
-	18492 connection accepts
-	52203 connections established (including accepts)
-	98349 connections closed (including 10602 drops)
+	18495 connection accepts
+	52206 connections established (including accepts)
+	98360 connections closed (including 10602 drops)
 	56 embryonic connections dropped
 	0 delayed frees of tcpcb
-	1631238 segments updated rtt (of 1459800 attempts)
+	1631307 segments updated rtt (of 1459865 attempts)
 	1718 retransmit timeouts
 		5 connections dropped by rexmit timeout
 	0 persist timeouts (resulting in 0 dropped connections)
@@ -338,22 +338,22 @@
 		0 keepalive probes sent
 		0 connections dropped by keepalive
 	1225 correct ACK header predictions
-	25478821 correct data packet header predictions
-	510854 PCB hash misses
+	25964427 correct data packet header predictions
+	996578 PCB hash misses
 	15 dropped due to no socket
 	0 connections drained due to memory shortage
 	13 PMTUD blackholes detected
-	90 bad connection attempts
-	19333 SYN cache entries added
+	92 bad connection attempts
+	19336 SYN cache entries added
 		0 hash collisions
-		18492 completed
+		18495 completed
 		0 aborted (no space to build PCB)
 		0 timed out
 		0 dropped due to overflow
 		0 dropped due to bucket overflow
 		841 dropped due to RST
 		0 dropped due to ICMP unreachable
-		19333 delayed free of SYN cache entries
+		19336 delayed free of SYN cache entries
 	342 SYN,ACKs retransmitted
 	25 duplicate SYNs received for entries already in the cache
 	0 SYNs dropped (no route or no space)
@@ -363,7 +363,7 @@
 	0 packets with ECN CE bit
 	0 packets ECN ECT(0) bit
 udp6:
-	73049 datagrams received
+	73063 datagrams received
 	0 with incomplete header
 	0 with bad data length field
 	0 with bad checksum
@@ -371,8 +371,8 @@
 	0 dropped due to no socket
 	0 multicast datagrams dropped due to no socket
 	0 dropped due to full socket buffers
-	73049 delivered
-	73952 datagrams output
+	73063 delivered
+	73966 datagrams output
 ipsec6:
 	0 no SA found (output)
 	0 no memory available (output)
@@ -472,17 +472,17 @@
 	0 delivered
 	0 datagrams output
 arp:
-	25418 packets sent
+	25422 packets sent
 		399 reply packets
-		25019 request packets
-	6767155 packets received
+		25023 request packets
+	6768090 packets received
 		3223 reply packets
-		6762339 valid request packets
-		6763985 broadcast/multicast packets
+		6763274 valid request packets
+		6764920 broadcast/multicast packets
 		0 packets with unknown protocol type
 		0 packets with bad (short) length
 		1593 packets with null target IP address
-		36568 packets with null source IP address
+		36571 packets with null source IP address
 		0 could not be mapped to an interface
 		0 packets sourced from a local hardware address
 		0 packets with a broadcast source hardware address
@@ -491,9 +491,9 @@
 		0 packets received on wrong interface
 		0 entrys overwritten
 		0 changes in hardware address length
-	30928 packets deferred pending ARP resolution
+	30933 packets deferred pending ARP resolution
 		600 sent
-		30328 dropped
+		30333 dropped
 	0 failures to allocate llinfo
 pfkey:
 	0 requests sent from userland


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