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Date: Tue, 15 May 2012 17:15:15 +0300
From: Denys Fedoryshchenko <denys@...p.net.lb>
To: <netdev@...r.kernel.org>, <e1000-devel@...ts.sourceforge.net>,
<jeffrey.t.kirsher@...el.com>, <jesse.brandeburg@...el.com>
Subject: Strange latency spikes/TX network stalls on Sun Fire X4150(x86) and
e1000e
Hi
I have two identical servers, Sun Fire X4150, both has different
flavors of Linux, x86_64 and i386.
04:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
04:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
0b:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet
Controller (rev 06)
0b:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet
Controller (rev 06)
I am using now interface:
#ethtool -i eth0
driver: e1000e
version: 1.9.5-k
firmware-version: 2.1-11
bus-info: 0000:04:00.0
There is 2 CPU , Intel(R) Xeon(R) CPU E5440 @ 2.83GHz .
i386 was acting as NAT and shaper, and as soon as i removed shaper from
it, i started to experience strange lockups, e.g. traffic is normal for
5-30 seconds, then short lockup for 500-3000ms (usually around 1000ms)
with dropped packets counter increasing. I was suspecting it is due
load, but it seems was wrong.
Recently, on another server, x86_64 i am using as development, i
upgrade kernel (it was old, from 2.6 series) and on completely idle
machine started to experience same latency spikes, while i am just
running mc and for example typing in text editor - i notice "stalls".
After i investigate it a little more, i notice also small amount of
drops on interface. No tcpdump running. Also this machine is idle, and
the only traffic there - some small broadcasts from network, my ssh, and
ping.
Dropped packets in ifconfig
RX packets:3752868 errors:0 dropped:5350 overruns:0 frame:0
Counter is increasing sometimes, when this stall happening.
ethtool -S is clean, there is no dropped packets.
I did tried to check load (mpstat and perf), there is nothing
suspicious, latencytop also doesn't show anything suspicious.
dropwatch report a lot of drops, but mostly because there is some
broadcasts and etc. tcpdump at the moment of such drops doesn't show
anything suspicious.
Changed qdisc from default fifo_fast to bfifo, without any result.
Tried: ethtool -K eth0 tso off gso off gro off sg off , no result
Problem occured at 3.3.6 - 3.4.0-rc7, most probably 3.3.0 also, but i
don't remember for sure. I thik on some kernels like 3.1 probably it
doesn't occur, i will check it soon, because it is not always reliable
to reproduce it. All tests i did on 3.4.0-rc7.
I did run also in background tcpdump, additionally iptables with
timestamps, and at time when stall occured, seems i am still receiving
packets properly, also on iperf udp (from some host to this SunFire) at
this moments no packets missing. But i am sure RX interface errors are
increasing.
If i do iperf from SunFire to test host - there is packetloss at
moments when stall occured.
I suspect that by some reason network card stop to transmit, but unable
to pinpoint issue. All other hosts in this network are fine and don't
have such problems.
Can you help me with that please? Maybe i can provide more debug
information, compile with patches and etc. Also i will try to fallback
to 3.1 and 3.0 kernels.
Here it is how it occurs and i am reproducing it:
I'm just opening file, and start to scroll it in mc, then in another
console i run ping
[1337089061.844167] 1480 bytes from 194.146.153.20: icmp_req=162 ttl=64
time=0.485 ms
[1337089061.944138] 1480 bytes from 194.146.153.20: icmp_req=163 ttl=64
time=0.470 ms
[1337089062.467759] 1480 bytes from 194.146.153.20: icmp_req=164 ttl=64
time=424 ms
[1337089062.467899] 1480 bytes from 194.146.153.20: icmp_req=165 ttl=64
time=324 ms
[1337089062.468058] 1480 bytes from 194.146.153.20: icmp_req=166 ttl=64
time=214 ms
[1337089062.468161] 1480 bytes from 194.146.153.20: icmp_req=167 ttl=64
time=104 ms
[1337089062.468958] 1480 bytes from 194.146.153.20: icmp_req=168 ttl=64
time=1.15 ms
[1337089062.568604] 1480 bytes from 194.146.153.20: icmp_req=169 ttl=64
time=0.477 ms
[1337089062.668909] 1480 bytes from 194.146.153.20: icmp_req=170 ttl=64
time=0.667 ms
Remote host tcpdump:
1337089061.934737 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 163, length 1480
1337089062.458360 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 164, length 1480
1337089062.458380 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 164, length 1480
1337089062.458481 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 165, length 1480
1337089062.458502 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 165, length 1480
1337089062.458606 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 166, length 1480
1337089062.458623 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 166, length 1480
1337089062.458729 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 167, length 1480
1337089062.458745 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 167, length 1480
1337089062.459537 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 168, length 1480
1337089062.459545 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 168, length 1480
Local host(SunFire) tcpdump:
1337089061.844140 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 162, length 1480
1337089061.943661 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 163, length 1480
1337089061.944124 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 163, length 1480
1337089062.465622 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 164, length 1480
1337089062.465630 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 165, length 1480
1337089062.465632 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 166, length 1480
1337089062.465634 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 167, length 1480
1337089062.467730 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 164, length 1480
1337089062.467785 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 168, length 1480
1337089062.467884 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 165, length 1480
1337089062.468035 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 166, length 1480
1337089062.468129 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 167, length 1480
1337089062.468928 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 168, length 1480
1337089062.568112 IP 194.146.153.22 > 194.146.153.20: ICMP echo
request, id 3486, seq 169, length 1480
1337089062.568578 IP 194.146.153.20 > 194.146.153.22: ICMP echo reply,
id 3486, seq 169, length 1480
lspci -t
centaur src # lspci -t
-[0000:00]-+-00.0
+-02.0-[01-05]--+-00.0-[02-04]--+-00.0-[03]--
| | \-02.0-[04]--+-00.0
| | \-00.1
| \-00.3-[05]--
+-03.0-[06]--
+-04.0-[07]----00.0
+-05.0-[08]--
+-06.0-[09]--
+-07.0-[0a]--
+-08.0
+-10.0
+-10.1
+-10.2
+-11.0
+-13.0
+-15.0
+-16.0
+-1c.0-[0b]--+-00.0
| \-00.1
+-1d.0
+-1d.1
+-1d.2
+-1d.3
+-1d.7
+-1e.0-[0c]----05.0
+-1f.0
+-1f.1
+-1f.2
\-1f.3
lspci
00:00.0 Host bridge: Intel Corporation 5000P Chipset Memory Controller
Hub (rev b1)
00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x4 Port 2 (rev b1)
00:03.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x4 Port 3 (rev b1)
00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x8 Port 4-5 (rev b1)
00:05.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x4 Port 5 (rev b1)
00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x8 Port 6-7 (rev b1)
00:07.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express
x4 Port 7 (rev b1)
00:08.0 System peripheral: Intel Corporation 5000 Series Chipset DMA
Engine (rev b1)
00:10.0 Host bridge: Intel Corporation 5000 Series Chipset FSB
Registers (rev b1)
00:10.1 Host bridge: Intel Corporation 5000 Series Chipset FSB
Registers (rev b1)
00:10.2 Host bridge: Intel Corporation 5000 Series Chipset FSB
Registers (rev b1)
00:11.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved
Registers (rev b1)
00:13.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved
Registers (rev b1)
00:15.0 Host bridge: Intel Corporation 5000 Series Chipset FBD
Registers (rev b1)
00:16.0 Host bridge: Intel Corporation 5000 Series Chipset FBD
Registers (rev b1)
00:1c.0 PCI bridge: Intel Corporation 631xESB/632xESB/3100 Chipset PCI
Express Root Port 1 (rev 09)
00:1d.0 USB controller: Intel Corporation 631xESB/632xESB/3100 Chipset
UHCI USB Controller #1 (rev 09)
00:1d.1 USB controller: Intel Corporation 631xESB/632xESB/3100 Chipset
UHCI USB Controller #2 (rev 09)
00:1d.2 USB controller: Intel Corporation 631xESB/632xESB/3100 Chipset
UHCI USB Controller #3 (rev 09)
00:1d.3 USB controller: Intel Corporation 631xESB/632xESB/3100 Chipset
UHCI USB Controller #4 (rev 09)
00:1d.7 USB controller: Intel Corporation 631xESB/632xESB/3100 Chipset
EHCI USB2 Controller (rev 09)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)
00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC
Interface Controller (rev 09)
00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller
(rev 09)
00:1f.2 SATA controller: Intel Corporation 631xESB/632xESB SATA AHCI
Controller (rev 09)
00:1f.3 SMBus: Intel Corporation 631xESB/632xESB/3100 Chipset SMBus
Controller (rev 09)
01:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express
Upstream Port (rev 01)
01:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to
PCI-X Bridge (rev 01)
02:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express
Downstream Port E1 (rev 01)
02:02.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express
Downstream Port E3 (rev 01)
04:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
04:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
07:00.0 RAID bus controller: Adaptec AAC-RAID (rev 09)
0b:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet
Controller (rev 06)
0b:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet
Controller (rev 06)
0c:05.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED
Graphics Family
dmesg:
[ 4.936885] e1000: Intel(R) PRO/1000 Network Driver - version
7.3.21-k8-NAPI
[ 4.936887] e1000: Copyright (c) 1999-2006 Intel Corporation.
[ 4.936966] e1000e: Intel(R) PRO/1000 Network Driver - 1.9.5-k
[ 4.936967] e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
[ 4.938529] e1000e 0000:04:00.0: (unregistered net_device):
Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 4.939598] e1000e 0000:04:00.0: irq 65 for MSI/MSI-X
[ 4.992246] e1000e 0000:04:00.0: eth0: (PCI Express:2.5GT/s:Width
x4) 00:1e:68:04:99:f8
[ 4.992657] e1000e 0000:04:00.0: eth0: Intel(R) PRO/1000 Network
Connection
[ 4.992964] e1000e 0000:04:00.0: eth0: MAC: 5, PHY: 5, PBA No:
FFFFFF-0FF
[ 4.994745] e1000e 0000:04:00.1: (unregistered net_device):
Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 4.996233] e1000e 0000:04:00.1: irq 66 for MSI/MSI-X
[ 5.050901] e1000e 0000:04:00.1: eth1: (PCI Express:2.5GT/s:Width
x4) 00:1e:68:04:99:f9
[ 5.051317] e1000e 0000:04:00.1: eth1: Intel(R) PRO/1000 Network
Connection
[ 5.051623] e1000e 0000:04:00.1: eth1: MAC: 5, PHY: 5, PBA No:
FFFFFF-0FF
[ 5.051857] e1000e 0000:0b:00.0: Disabling ASPM L1
[ 5.052168] e1000e 0000:0b:00.0: (unregistered net_device):
Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 5.052611] e1000e 0000:0b:00.0: irq 67 for MSI/MSI-X
[ 5.223454] e1000e 0000:0b:00.0: eth2: (PCI Express:2.5GT/s:Width
x4) 00:1e:68:04:99:fa
[ 5.223864] e1000e 0000:0b:00.0: eth2: Intel(R) PRO/1000 Network
Connection
[ 5.224178] e1000e 0000:0b:00.0: eth2: MAC: 0, PHY: 4, PBA No:
C83246-002
[ 5.224412] e1000e 0000:0b:00.1: Disabling ASPM L1
[ 5.224709] e1000e 0000:0b:00.1: (unregistered net_device):
Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 5.225168] e1000e 0000:0b:00.1: irq 68 for MSI/MSI-X
[ 5.397603] e1000e 0000:0b:00.1: eth3: (PCI Express:2.5GT/s:Width
x4) 00:1e:68:04:99:fb
[ 5.398021] e1000e 0000:0b:00.1: eth3: Intel(R) PRO/1000 Network
Connection
[ 5.398336] e1000e 0000:0b:00.1: eth3: MAC: 0, PHY: 4, PBA No:
C83246-002
[ 13.859817] e1000e 0000:04:00.0: irq 65 for MSI/MSI-X
[ 13.962309] e1000e 0000:04:00.0: irq 65 for MSI/MSI-X
[ 17.150392] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: None
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