Date: Tue, 20 Jul 2010 06:20:39 +0200 From: John Hay <jhay@meraka.org.za> To: freebsd-stable@freebsd.org Subject: Re: packet loss on ixgbe using vlans and ipv6 Message-ID: <20100720042039.GA79254@zibbi.meraka.csir.co.za> In-Reply-To: <20100719204618.GA21752@icarus.home.lan> References: <20100719202541.GA42777@zibbi.meraka.csir.co.za> <20100719204618.GA21752@icarus.home.lan>
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On Mon, Jul 19, 2010 at 01:46:18PM -0700, Jeremy Chadwick wrote:
> On Mon, Jul 19, 2010 at 10:25:42PM +0200, John Hay wrote:
> > I have a Dell T710 with 4 X 10G ethernet interfaces (2 X Dual port Intel
> > 82599 cards). It is running FreeBSD RELENG_8 last updated on July 13.
> >
> > What I see is packet loss (0 - 40%) on IPv6 packets in vlans, when the
> > machine is not the originator of the packets.
> >
> > Let me try to describe a little more. If a neigbouring machine ping6 it,
> > there will be packet loss. If it act as a router for ipv6, there will be
> > packet loss. This happen even when the network is pretty idle and with
> > different switches (Nortel and Cisco equipment). The packet loss is
> > very fluctuating. Pinging 1000 packets might loose 1% one time and the
> > next time 30%. Looking with tcpdump, I can see the packets arriving and
> > going out, but the packet never arrive at the next machine. (My feeling is
> > that they get lost inside the card.) The error counters on the switch
> > does not increment.
> >
> > I do not see packet loss if the machine originate the packets, for example
> > ping6 from the machine. Also ipv4 packets do not have any packets loss. If
> > I do not use vlans, I don't see packet loss with ipv6 either.
> >
> > pciconf -l of the ethernet cards:
> >
> > ix0@pci0:129:0:0: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
> > ix1@pci0:129:0:1: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
> > ix2@pci0:131:0:0: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
> > ix3@pci0:131:0:1: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
>
> Can you provide pciconf -lvc output for the ix[0-3] cards instead? I
> believe Jack Vogel will need this. vmstat -i might also be helpful
> (full output).
Ok, here is it and also a netstat -m thrown in. The numbers are pretty low
because I rebooted after compiling a kernel with IPFIREWALL, ROUTETABLES,
MROUTING and FLOWTABLE removed. I'll add my kernel config file with empty
and commented out lines removed.
After rebooting, I first tested with vlans (that is in my rc.conf) and then
tested with the vlans unconfigured on ix2.
ix0@pci0:129:0:0: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
class = network
subclass = ethernet
cap 01[40] = powerspec 3 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message, 64 bit, vector masks
cap 11[70] = MSI-X supports 64 messages in map 0x20 enabled
cap 10[a0] = PCI-Express 2 endpoint max data 256(512) link x8(x8)
ix1@pci0:129:0:1: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
class = network
subclass = ethernet
cap 01[40] = powerspec 3 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message, 64 bit, vector masks
cap 11[70] = MSI-X supports 64 messages in map 0x20 enabled
cap 10[a0] = PCI-Express 2 endpoint max data 256(512) link x8(x8)
ix2@pci0:131:0:0: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
class = network
subclass = ethernet
cap 01[40] = powerspec 3 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message, 64 bit, vector masks
cap 11[70] = MSI-X supports 64 messages in map 0x20 enabled
cap 10[a0] = PCI-Express 2 endpoint max data 256(512) link x8(x8)
ix3@pci0:131:0:1: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
class = network
subclass = ethernet
cap 01[40] = powerspec 3 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message, 64 bit, vector masks
cap 11[70] = MSI-X supports 64 messages in map 0x20 enabled
cap 10[a0] = PCI-Express 2 endpoint max data 256(512) link x8(x8)
output of vmstat -i
interrupt total rate
irq19: ehci0 28371 0
irq21: uhci2 uhci4+ 48 0
irq23: atapci0 46 0
irq34: mpt0 146954 2
cpu0: timer 112205297 1999
irq256: bce0 52063 0
irq257: bce1 1 0
irq258: bce2 1 0
irq259: bce3 1 0
irq260: ix0:que 0 142258 2
irq261: ix0:que 1 56464 1
irq262: ix0:que 2 56199 1
irq263: ix0:que 3 56198 1
irq264: ix0:que 4 66569 1
irq265: ix0:que 5 56148 1
irq266: ix0:que 6 56217 1
irq267: ix0:que 7 56311 1
irq268: ix0:que 8 56169 1
irq269: ix0:que 9 69485 1
irq270: ix0:que 10 56176 1
irq271: ix0:que 11 56205 1
irq272: ix0:que 12 56281 1
irq273: ix0:que 13 56359 1
irq274: ix0:que 14 56292 1
irq275: ix0:que 15 56197 1
irq276: ix0:link 2 0
irq277: ix1:que 0 107873 1
irq278: ix1:que 1 56094 0
irq279: ix1:que 2 56097 0
irq280: ix1:que 3 56096 0
irq281: ix1:que 4 65439 1
irq282: ix1:que 5 56091 0
irq283: ix1:que 6 56092 0
irq284: ix1:que 7 56098 0
irq285: ix1:que 8 56091 0
irq286: ix1:que 9 56096 0
irq287: ix1:que 10 56093 0
irq288: ix1:que 11 56091 0
irq289: ix1:que 12 56096 0
irq290: ix1:que 13 56095 0
irq291: ix1:que 14 57125 1
irq292: ix1:que 15 56093 0
irq293: ix1:link 1 0
irq294: ix2:que 0 231250 4
irq295: ix2:que 1 57784 1
irq296: ix2:que 2 69956 1
irq297: ix2:que 3 59498 1
irq298: ix2:que 4 58201 1
irq299: ix2:que 5 58599 1
irq300: ix2:que 6 57813 1
irq301: ix2:que 7 60075 1
irq302: ix2:que 8 68639 1
irq303: ix2:que 9 58194 1
irq304: ix2:que 10 60752 1
irq305: ix2:que 11 57628 1
irq306: ix2:que 12 66796 1
irq307: ix2:que 13 63307 1
irq308: ix2:que 14 60788 1
irq309: ix2:que 15 59102 1
irq310: ix2:link 5 0
irq311: ix3:que 0 56090 0
irq312: ix3:que 1 56090 0
irq313: ix3:que 2 56090 0
irq314: ix3:que 3 56090 0
irq315: ix3:que 4 56090 0
irq316: ix3:que 5 56090 0
irq317: ix3:que 6 56090 0
irq318: ix3:que 7 56090 0
irq319: ix3:que 8 56090 0
irq320: ix3:que 9 56090 0
irq321: ix3:que 10 56090 0
irq322: ix3:que 11 56090 0
irq323: ix3:que 12 56090 0
irq324: ix3:que 13 56090 0
irq325: ix3:que 14 56090 0
irq326: ix3:que 15 56090 0
cpu1: timer 112196134 1999
cpu10: timer 112196179 1999
cpu3: timer 112196135 1999
cpu8: timer 112196108 1999
cpu4: timer 112196161 1999
cpu11: timer 112196179 1999
cpu5: timer 112196161 1999
cpu13: timer 112196179 1999
cpu6: timer 112196161 1999
cpu14: timer 112196179 1999
cpu2: timer 112196106 1999
cpu12: timer 112196179 1999
cpu7: timer 112196161 1999
cpu9: timer 112196155 1999
cpu15: timer 112196179 1999
Total 1799390156 32072
netstat -m
133178/4042/137220 mbufs in use (current/cache/total)
133112/2062/135174/262144 mbuf clusters in use (current/cache/total/max)
133112/2056 mbuf+clusters out of packet secondary zone in use (current/cache)
0/20/20/131072 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/65536 9k jumbo clusters in use (current/cache/total/max)
0/0/0/32768 16k jumbo clusters in use (current/cache/total/max)
299518K/5214K/304733K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/0/0 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines
kernel config file, basically started with 64 bit and removed the stuff
I do not need.
cpu HAMMER
ident SEEKAT
device ipmi
makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
options SCHED_ULE # ULE scheduler
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options SCTP # Stream Control Transmission Protocol
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_DIRHASH # Improve performance on big directories
options CD9660 # ISO 9660 Filesystem
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options GEOM_PART_GPT # GUID Partition Tables.
options GEOM_LABEL # Provides labelization
options COMPAT_43TTY # BSD 4.3 TTY compat (sgtty)
options COMPAT_IA32 # Compatible with i386 binaries
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
options COMPAT_FREEBSD6 # Compatible with FreeBSD6
options COMPAT_FREEBSD7 # Compatible with FreeBSD7
options KTRACE # ktrace(1) support
options STACK # stack(9) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options P1003_1B_SEMAPHORES # POSIX-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
options INCLUDE_CONFIG_FILE # Include this file in kernel
options SMP # Symmetric MultiProcessor Kernel
device cpufreq
device acpi
device pci
device ata
device atapicd # ATAPI CDROM drives
device mpt # LSI-Logic MPT-Fusion
device scbus # SCSI bus (required for SCSI)
device da # Direct Access (disks)
device pass # Passthrough device (direct SCSI access)
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse
device kbdmux # keyboard multiplexer
device vga # VGA video card driver
device splash # Splash screen and screen saver support
device sc
device agp # support several AGP chipsets
device uart # Generic UART driver
device loop # Network loopback
device random # Entropy device
device ether # Ethernet support
device pty # BSD-style compatibility pseudo ttys
device bpf # Berkeley packet filter
device uhci # UHCI PCI->USB interface
device ehci # EHCI PCI->USB interface (USB 2.0)
device usb # USB Bus (required)
device uhid # "Human Interface Devices"
device ukbd # Keyboard
device umass # Disks/Mass storage - Requires scbus and da
device ums # Mouse
kldstat
Id Refs Address Size Name
1 55 0xffffffff80100000 6ea290 kernel
2 1 0xffffffff807eb000 19e088 zfs.ko
3 2 0xffffffff8098a000 3860 opensolaris.ko
4 2 0xffffffff8098e000 20448 krpc.ko
5 1 0xffffffff809af000 21100 geom_mirror.ko
6 1 0xffffffff809d1000 66c0 if_vlan.ko
7 1 0xffffffff809d8000 506c8 if_bce.ko
8 2 0xffffffff80a29000 3ec20 miibus.ko
9 1 0xffffffff80a68000 243e0 if_ixgbe.ko
10 1 0xffffffff80a8d000 1e08 coretemp.ko
John
--
John Hay -- jhay@meraka.csir.co.za / jhay@FreeBSD.org
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