Dropped Packets

Sun Feb 24 16:25:27 UTC 2008

Hi,
	Its interesting you'd say that I'd virtually ruled it out given that
it takes over a day to start? What I do see sometimes is a message warning
me that its limiting open port RST responses - the unit is under a
reasonable amount of load though (but not overloaded). The strange thing is
that its open port (not closed). Even if I up the limit though (the messages
do stop) it doesn't stop the dropping... 

I've rebooted it recently, but here is the dmesg --

CPU: Intel(R) Xeon(R) CPU            5150  @ 2.66GHz (2666.68-MHz 686-class
CPU)
  Origin = "GenuineIntel"  Id = 0x6fb  Stepping = 11

Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA
,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Hyperthreading: 2 logical CPUs
real memory  = 3489005568 (3407232K bytes)
avail memory = 3395510272 (3315928K bytes)
Preloaded elf kernel "kernel" at 0xc0378000.
Preloaded elf module "splash_bmp.ko" at 0xc037809c.
Preloaded splash_image_data "/boot/optec.bmp" at 0xc0378140.
Preloaded elf module "if_em.ko" at 0xc037818c.
Preloaded elf module "if_silbpi.ko" at 0xc037822c.
Preloaded elf module "hptmv.ko" at 0xc03782d0.
Pentium Pro MTRR support enabled
md0: Malloc disk
Using $PIR table, 31 entries at 0xc00fddd0
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
pcib8: <PCI to PCI bridge (vendor=8086 device=25f7)> irq 0 at device 2.0 on
pci0
pci1: <PCI bus> on pcib8
pcib9: <PCI to PCI bridge (vendor=8086 device=3500)> irq 11 at device 0.0 on
pci1
pci2: <PCI bus> on pcib9
pcib10: <PCI to PCI bridge (vendor=8086 device=3510)> irq 11 at device 0.0
on pci2
pci3: <PCI bus> on pcib10
pcib11: <PCI to PCI bridge (vendor=8086 device=0329)> at device 0.0 on pci3
pci4: <PCI bus> on pcib11
pcib12: <PCI to PCI bridge (vendor=8086 device=032a)> at device 0.2 on pci3
pci5: <PCI bus> on pcib12
hptmv0: <RocketRAID 182x SATA Controller> mem 0xd8000000-0xd807ffff irq 11
at device 1.0 on pci5
RocketRAID 182x SATA Controller driver Version 1.12
RR182x [0,0]: channel started successfully
RR182x [0,1]: channel started successfully
RR182x [0,2]: channel started successfully
RR182x [0,3]: channel started successfully
RR182x [0,4]: channel started successfully
RR182x [0,5]: channel started successfully
RR182x [0,6]: channel started successfully
RR182x [0,7]: channel started successfully
RR182x: RAID5 write-back enabled
pcib13: <PCI to PCI bridge (vendor=8086 device=3518)> irq 5 at device 2.0 on
pci2
pci6: <PCI bus> on pcib13
pci6: <unknown card> (vendor=0x8086, dev=0x1096) at 0.0 irq 5
pci6: <unknown card> (vendor=0x8086, dev=0x1096) at 0.1 irq 10
pcib14: <PCI to PCI bridge (vendor=8086 device=350c)> at device 0.3 on pci1
pci7: <PCI bus> on pcib14
silbpi0: <PXG2BPIG> port 0x3000-0x303f mem 0xd8200000-0xd821ffff irq 11 at
device 1.0 on pci7
silbpi0:  Speed:N/A  Duplex:N/A
silbpi1: <PXG2BPIG> port 0x3040-0x307f mem 0xd8220000-0xd823ffff irq 7 at
device 1.1 on pci7
silbpi1:  Speed:N/A  Duplex:N/A
pcib15: <PCI to PCI bridge (vendor=8086 device=25f8)> irq 0 at device 4.0 on
pci0
pci8: <PCI bus> on pcib15
pcib16: <PCI to PCI bridge (vendor=8086 device=25f9)> irq 0 at device 6.0 on
pci0
pci9: <PCI bus> on pcib16
pcib17: <PCI to PCI bridge (vendor=8086 device=2690)> irq 7 at device 28.0
on pci0
pci10: <PCI bus> on pcib17
pcib18: <Intel 82801BA/BAM (ICH2) Hub to PCI bridge> at device 30.0 on pci0
pci11: <PCI bus> on pcib18
pci11: <ATI model 515e graphics accelerator> at 1.0 irq 5
isab0: <PCI to ISA bridge (vendor=8086 device=2670)> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Generic PCI ATA controller> port
0x1800-0x180f,0-0x3,0-0x7,0-0x3,0-0x7 at device 31.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <unknown card> (vendor=0x8086, dev=0x269b) at 31.3 irq 10
pcib1: <Host to PCI bridge> on motherboard
pci12: <PCI bus> on pcib1
pcib2: <Host to PCI bridge> on motherboard
pci13: <PCI bus> on pcib2
pcib3: <Host to PCI bridge> on motherboard
pci14: <PCI bus> on pcib3
pcib4: <Host to PCI bridge> on motherboard
pci15: <PCI bus> on pcib4
pcib5: <Host to PCI bridge> on motherboard
pci16: <PCI bus> on pcib5
pcib6: <Host to PCI bridge> on motherboard
pci17: <PCI bus> on pcib6
pcib7: <Host to PCI bridge> on motherboard
pci18: <PCI bus> on pcib7
orm0: <Option ROMs> at iomem 0xc0000-0xcafff,0xcb000-0xd0fff on isa0
pmtimer0 on isa0
fdc0: ready for input in output
fdc0: cmd 3 failed at out byte 1 of 3
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
IP packet filtering initialized, divert enabled, rule-based forwarding
enabled, default to accept, logging disabled
IPsec: Initialized Security Association Processing.
IP Filter: v3.4.35 initialized.  Default = block all, Logging = enabled
ad0: 76319MB <ST380215A> [155061/16/63] at ata0-master BIOSDMA
da0 at hptmv0 bus 0 target 0 lun 0
da0: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da0: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da1 at hptmv0 bus 0 target 1 lun 0
da1: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da1: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da2 at hptmv0 bus 0 target 2 lun 0
da2: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da2: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da3 at hptmv0 bus 0 target 3 lun 0
da3: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da3: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da4 at hptmv0 bus 0 target 4 lun 0
da4: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da4: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da5 at hptmv0 bus 0 target 5 lun 0
da5: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da5: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da6 at hptmv0 bus 0 target 6 lun 0
da6: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da6: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
da7 at hptmv0 bus 0 target 7 lun 0
da7: <ST380815 AS 3.AA> Fixed Direct Access SCSI-0 device 
da7: 76319MB (156301477 512 byte sectors: 255H 63S/T 9729C)
Mounting root from ufs:/dev/ad0s1a

Thanks for the help
Dave

-----Original Message-----
From: Simon Chang [mailto:simonychang at gmail.com] 
Sent: Sunday, February 24, 2008 5:57 PM
To: Dave Raven
Cc: freebsd-questions at freebsd.org
Subject: Re: Dropped Packets

Hardware issues come to mind.  Do you have a dmesg?

SC

On Sun, Feb 24, 2008 at 9:27 AM, Dave Raven <dave at raven.za.net> wrote:
> Hi all,
>          I have a FreeBSD 4.11 (I know its outdated but I don't have an
>  option) box which is behaving very weirdly. After about a day and a half
it
>  starts to drop packets - about 6-10% of pings at least, and tcp traffic
>  becomes unreliable etc.
>
>  I have swapped out the network cards, the cables etc and I don't have any
>  mbuf problems and all seems fine. For the first day the box works fine -
>  pinging, doing tcp traffic etc; and then suddenly it just stops.
Rebooting
>  brings it all back to normal.
>
>  Any ideas what could be causing this, and how I could go about diagnosing
>  it? As far as I know there are no known bugs for this. I'm using the em
>  driver, but not with SMP. There are no errors on the interface, and the
em
>  debug_info and stats sysctl's don't show any problems - there is no
>  indication on the box itself that its dropping packets..
>
>  My thinking is that it must be box specific as a reboot solves the
problem?
>
>  Thanks in advance
>  Dave
>
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