Comparision of regular e1000 vs on-demand recovery 
==================================================
	-- Does not include watchdog times. We are not able to get device
	up even with watchdog triggers. 

Run 1:

Regular e1000:

[3808.241466 - 3806.849277]

 4122.386829] Starting module exit.
 [ 4122.893628] e1000 0000:03:00.0: PCI INT A disabled
 [ 4123.002601] Done with module exit.

 0.62 + 1.6 = 2.22s

On-demand recovery: 
 [5689.751528] SFI failed.
 [ 5690.095651] *****Killing e1000_get_ringparam 0. 
 [ 5692.256768] e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX

 0.5 s

==================================================
 Run2:

 Regular e1000

 [ 5737.503900] Intel(R) PRO/1000 Network Driver - version 7.3.21-k3-NAPI
 [ 5737.651080] Copyright (c) 1999-2006 Intel Corporation.
 [ 5737.767505] e1000 0000:03:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
 [ 5738.181118] e1000: 0000:03:00.0: e1000_probe: (PCI:33MHz:32-bit) 00:1b:21:32:71:b1
 [ 5738.500259] e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
 [ 5738.819266] Opened successfully.
 [ 5738.894175] ADDRCONF(NETDEV_UP): eth2: link is not ready
 --
 [ 5740.640657] e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
 [ 5740.812482] ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
 --
 [ 5749.634534] Starting module exit.
 [ 5750.143264] e1000 0000:03:00.0: PCI INT A disabled
 [ 5750.252402] Done with module exit.

 1.3 + 0.6 = 1.8

On demand recovery: 

 [ 6185.719218] SFI failed.
 [ 6186.063534] *****Killing e1000_get_ringparam 0. 

 0.34


Run 3:

Run 3:
======

[ 6653.877870] Intel(R) PRO/1000 Network Driver - version 7.3.21-k3-NAPI
[ 6654.024780] Copyright (c) 1999-2006 Intel Corporation.
[ 6654.141181] e1000 0000:03:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 6654.554701] e1000: 0000:03:00.0: e1000_probe: (PCI:33MHz:32-bit) 00:1b:21:32:71:b1
[ 6654.876240] e1000: eth2: e1000_probe: Intel(R) PRO/1000 Network Connection
[ 6655.195933] Opened successfully.
[ 6655.270864] ADDRCONF(NETDEV_UP): eth2: link is not ready

1.4 s
--
[ 6657.106160] e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[ 6657.278374] ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
[ 6667.716562] eth2: no IPv6 routers present

[ 6670.056355] Starting module exit.
[ 6670.568257] e1000 0000:03:00.0: PCI INT A disabled
[ 6670.677265] Done with module exit.

0.62 s

2.02s

On-demand recovery

[ 6820.722664] SFI failed.
[ 6821.067088] *****Killing e1000_get_ringparam 0. 

--
[ 6823.453273] e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX

0.34s


Latency of checkpoint

Checkpoint: 32 micro-seconds
Restore: 285 ms

=======


Recovery: 288ms, 373ms, 287 ms, 288 ms recovery time lapse: 291309 micro-secomds


============================

native

1158192
 130000
 507336
=======


1169185
  130000
509670