named "error sending response: not enough free resources"

[James Smallacombe]

On Wed, 27 Jan 2010, Chuck Swiger wrote:

> On Jan 27, 2010, at 1:15 PM, James Smallacombe wrote:

>>>> Jan 26 21:50:32 host named[667]: client <IP REMOVED>#57938: error 
>>>> sending response: not enough free resources
>
>>> indicates a problem sending UDP traffic; netstat -s output would be
>>
>> Unfortunately, I did not have time for netstats or tcpdumps when this 
>> was happening and I've not seen this log entry since yesterday evening.
>
> Unless you rebooted the machine again since the errors were reported, 
> the netstat output would still be relevant.

Ok, I saw this at least once since the last reboot, so here are the tcp 
and udp portions of the netstat -s:

tcp:
 	31422122 packets sent
 		23133142 data packets (3473553079 bytes)
 		314215 data packets (132175418 bytes) retransmitted
 		6579 data packets unnecessarily retransmitted
 		11 resends initiated by MTU discovery
 		5408494 ack-only packets (200066 delayed)
 		0 URG only packets
 		1237 window probe packets
 		868892 window update packets
 		1713629 control packets
 	28600984 packets received
 		17029642 acks (for 3351867346 bytes)
 		1256410 duplicate acks
 		73760 acks for unsent data
 		11363962 packets (548204663 bytes) received in-sequence
 		184682 completely duplicate packets (16657176 bytes)
 		2327 old duplicate packets
 		1468 packets with some dup. data (339128 bytes duped)
 		334018 out-of-order packets (337877573 bytes)
 		85687 packets (637782 bytes) of data after window
 		10 window probes
 		114047 window update packets
 		160975 packets received after close
 		1148 discarded for bad checksums
 		0 discarded for bad header offset fields
 		0 discarded because packet too short
 		9123 discarded due to memory problems
 	413250 connection requests
 	1504359 connection accepts
 	6 bad connection attempts
 	100 listen queue overflows
 	186225 ignored RSTs in the windows
 	1912682 connections established (including accepts)
 	2050764 connections closed (including 1022550 drops)
 		1058803 connections updated cached RTT on close
 		1065370 connections updated cached RTT variance on close
 		252114 connections updated cached ssthresh on close
 	3769 embryonic connections dropped
 	11958433 segments updated rtt (of 11574855 attempts)
 	285733 retransmit timeouts
 		12079 connections dropped by rexmit timeout
 	1884 persist timeouts
 		4 connections dropped by persist timeout
 	0 Connections (fin_wait_2) dropped because of timeout
 	385 keepalive timeouts
 		345 keepalive probes sent
 		40 connections dropped by keepalive
 	2663719 correct ACK header predictions
 	5996181 correct data packet header predictions
 	1520655 syncache entries added
 		58477 retransmitted
 		26560 dupsyn
 		20622 dropped
 		1504359 completed
 		137 bucket overflow
 		0 cache overflow
 		6190 reset
 		10206 stale
 		100 aborted
 		0 badack
 		47 unreach
 		0 zone failures
 	1541277 cookies sent
 	415 cookies received
 	21638 SACK recovery episodes
 	37110 segment rexmits in SACK recovery episodes
 	51620488 byte rexmits in SACK recovery episodes
 	240368 SACK options (SACK blocks) received
 	217836 SACK options (SACK blocks) sent
 	0 SACK scoreboard overflow
udp:
 	9663633 datagrams received
 	0 with incomplete header
 	0 with bad data length field
 	549 with bad checksum
 	9609 with no checksum
 	12092 dropped due to no socket
 	49230 broadcast/multicast datagrams undelivered
 	0 dropped due to full socket buffers
 	0 not for hashed pcb
 	9601762 delivered
 	42443353 datagrams output
 	0 times multicast source filter matched


James Smallacombe		      PlantageNet, Inc. CEO and Janitor
up at 3.am							    http://3.am
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