Re: Question regarding e1000 driver and dropped packets (2.6.5 / 2.6.10)?

[Bukie Mabayoje]

Bukie Mabayoje wrote:

> Can you do a simple test?
> Connect the two box to the same switch. ( No other box should be on the physical bus)
> 1. Send packets from BoxA  ------->   BoxB  ( Record the stats)
>
> 2. Send packets from BoxB -------> BoxA    (Record the stats)
>
> 3. Send packets simultaneously  from  BoxB----->BoxA and BoxA  -----> BoxB  (Record the stats)
>
> if you can find a third box
>
> 4. Send packets [BoxA and BoxC] --------->   BoxB and BoxB -----> BoxA (Record the stats)
>
> 5. Send packets [BoxB and BoxC] ---------> BoxA and BoxA ------> BoxB (Record the stats)
>
> I don't understand why you received more packet on BoxB. A controlled test will help clarify any ambiguity.
>       [BoxA]   RX packets:196787934 errors:4 dropped:0 overruns:0 frame:2
>                     TX packets:101356779 errors:0 dropped:0 overruns:0 carrier:0
>
>      [BoxB]    RX packets:446380046 errors:1276833 dropped:1276833 overruns:1276833 frame:0
>                     TX packets:572550636 errors:0 dropped:0 overruns:0 carrier:0
>
> Justin Piszcz wrote:
>
> > I have two identical machines [mobo/hardware wise]:
> >
> > Each machine is a Dell GX1p (500MHZ).
> >
> > I have two Intel Gigabit NICs, one in each box, hooked up to a GigE
> > switch.
> >
> > Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller
> > Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller
> >
> > I doubt its the kernel version; does anyone have any suggestions/ideas why
> > one machine has virtually NO overruns/errors/drops and the other has tons?
> >
> > Also, (I doubt this to be the case but I'll ask anyway) - Is the way the
> > NIC's are setup in the box next to other cards / alter their PCI/IRQ
> > routing which would effect error/drop rates?
> >
> > IE:
> >
> > PCI1 - promise card / pata
> > PCI2 - promise card / pata
> > PCI3 - promise card / sata
> > PCI4 - e1000 nic
> > PCI5 - 4 port nic
>
> What matters is which INT# [A,B,C,D] line and/or combination  the PCI slot 1, 2, 3, 4 is using.
> You can find out by running lspci -vv
> If they are routed to the same system interrupt and  lastly, the interrupt priority issues.
>
> >
> >
> > Would it make sense to order them in a different direction?
>
> May not help in identifying the problem.
>
> >
> >
> > Also, is there a correlation between errors on the NIC and ERR
> > in /proc/interrupts?
>
> Maybe......
>
> >
> >
> > Secondly, could loading lm-sensors/temperature modules be causing these
> > problems?
>
> You don't have any overrun on this box.

My Error. It may be related. Try without loading ln-sensor/temp modules.
I don't think your mother board supports the i2c stuff you are loading.
You have the Intel 440BX AGP chipset and there is not i2c interface on it.

>
>
> >
> >
> > dmesg from box2 below:
> >
> > e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
> > eth1: Setting full-duplex based on MII#1 link partner capability of 45e1.
> > eth2: Setting full-duplex based on MII#1 link partner capability of 45e1.
> > nfs warning: mount version older than kernel
> > nfs warning: mount version older than kernel
> > nfs warning: mount version older than kernel
> > nfs warning: mount version older than kernel
> > i2c /dev entries driver
> > piix4_smbus 0000:00:07.3: Found 0000:00:07.3 device
> > piix4_smbus 0000:00:07.3: WARNING: SMBus interface has been FORCEFULLY
> > ENABLED!
> > mtrr: no MTRR for fd000000,800000 found
> > spurious 8259A interrupt: IRQ7.
> > spurious 8259A interrupt: IRQ15.
> >
> > I am currently out of ideas, if anyone can suggest anything, I'd be most
> > greatful, thanks!
> >
> > On the first box, there are hardly any problems receiving packets:
> >
> > Note the errors & dropped on the receiving end:
> >
> > BOX1: (2.6.5)
> >
> > eth0      Link encap:Ethernet  HWaddr 00:0E:0C:00:CD:B1
> >            inet addr:10.0.2.254  Bcast:10.0.2.255  Mask:255.255.255.0
> >            inet6 addr: fe80::20e:cff:fe00:cdb1/64 Scope:Link
> >            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >            RX packets:196787934 errors:4 dropped:0 overruns:0 frame:2
> >            TX packets:101356779 errors:0 dropped:0 overruns:0 carrier:0
> >            collisions:0 txqueuelen:1000
> >            RX bytes:2602045376 (2481.5 Mb)  TX bytes:4051930608 (3864.2 Mb)
> >            Base address:0xcc80 Memory:ff020000-ff040000
> >
> > BOX1 MODULES:
> >
> > $ lsmod
> > Module                  Size  Used by
> > ip_nat_ftp              4016  0
> > ip_conntrack_ftp       71088  1 ip_nat_ftp
> >
> > BOX2: (2.6.10)
> >
> > On another box (same physical HW) I get this:
> >
> > eth0      Link encap:Ethernet  HWaddr 00:0E:0C:00:D2:06
> >            inet addr:10.0.2.253  Bcast:10.0.2.255  Mask:255.255.255.0
> >            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> > ****-->   RX packets:446380046 errors:1276833 dropped:1276833 overruns:1276833 frame:0
> >            TX packets:572550636 errors:0 dropped:0 overruns:0 carrier:0
> >            collisions:0 txqueuelen:1000
> >            RX bytes:2351750726 (2.1 GiB)  TX bytes:3659840330 (3.4 GiB)
> >            Base address:0xd8c0 Memory:f8fa0000-f8fc0000
> >
> > BOX2 MODULES:
> >
> > $ lsmod
> > Module                  Size  Used by
> > ip_nat_irc              3408  0
> > ip_conntrack_irc       70480  1 ip_nat_irc
> > ip_nat_ftp              4112  0
> > ip_conntrack_ftp       71344  1 ip_nat_ftp
> > adm1021                11060  0
> > i2c_piix4               6000  0
> > i2c_sensor              2784  1 adm1021
> > i2c_dev                 7680  0
> > i2c_core               18224  4 adm1021,i2c_piix4,i2c_sensor,i2c_dev
> >
> > I have tried using different cable and ports on the switch, the result is
> > the same.
> >
> > $ tar cvf /box2/4gb_of_stuff.tar 4gb_of_stuff  # then the numbers rise rapidly
> >
> > After copying only 1-2GB on BOX2, this is what I get:
> >
> > eth0      Link encap:Ethernet  HWaddr 00:0E:0C:00:D2:06
> >            inet addr:10.0.2.253  Bcast:10.0.2.255  Mask:255.255.255.0
> >            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> >            RX packets:1038733 errors:1459 dropped:1459 overruns:1459 frame:0
> >            TX packets:560952 errors:0 dropped:0 overruns:0 carrier:0
> >            collisions:0 txqueuelen:1000
> >            RX bytes:1491121900 (1.3 GiB)  TX bytes:763420385 (728.0 MiB)
> >            Base address:0xd8c0 Memory:f8fa0000-f8fc0000
> >
> > The only thing that is different is one has more HDD's and an extra PCI
> > controller or so:
> >
> > BOX1 LSPCI:
> >
> > 00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge
> > (rev 03)
> > 00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge
> > (rev 03)
> > 00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
> > 00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
> > 00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
> > 00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
> > 00:0d.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet
> > Controller
> > 00:0e.0 Unknown mass storage controller: Promise Technology, Inc. 20268
> > (rev 02)
> > 00:0f.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03)
> > 00:11.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone]
> > (rev 24)
> > 01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage Pro AGP
> > 1X/2X (rev 5c)
> > 02:09.0 Communication controller: Individual Computers - Jens Schoenfeld
> > Intel 537
> > 02:0a.0 Ethernet controller: 3Com Corporation 3c590 10BaseT [Vortex]
> >
> > BOX2 LSPCI:
> >
> > 0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host
> > bridge (rev 03)
> > 0000:00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP
> > bridge (rev 03)
> > 0000:00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
> > 0000:00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
> > 0000:00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
> > 0000:00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
> > 0000:00:0d.0 Unknown mass storage controller: Promise Technology, Inc.
> > 20269 (rev 02)
> > 0000:00:0e.0 Unknown mass storage controller: Promise Technology, Inc.
> > 20269 (rev 02)
> > 0000:00:0f.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev
> > 03)
> > 0000:01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage Pro
> > AGP 1X/2X (rev 5c)
> > 0000:02:09.0 Unknown mass storage controller: Promise Technology, Inc.
> > PDC20375 (SATA150 TX2plus) (rev 02)
> > 0000:02:0a.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet
> > Controller
> > 0000:02:0b.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev
> > 03)
> > 0000:03:04.0 Ethernet controller: Digital Equipment Corporation DECchip
> > 21140 [FasterNet] (rev 22)
> > 0000:03:05.0 Ethernet controller: Digital Equipment Corporation DECchip
> > 21140 [FasterNet] (rev 22)
> > 0000:03:06.0 Ethernet controller: Digital Equipment Corporation DECchip
> > 21140 [FasterNet] (rev 22)
> > 0000:03:07.0 Ethernet controller: Digital Equipment Corporation DECchip
> > 21140 [FasterNet] (rev 22)
> >
> > Please CC me as I am not on the list, thanks!
> > -
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