On 06/09/2015 12:11 AM, Perf Tech wrote:
Thanks for catching the problem. Here is the output you asked for.
# cat /proc/net/packet
sk RefCnt Type Proto Iface R Rmem User Inode
ffff8800d8a2d800 3 3 0003 4 1 0 0 10933
Ok, if you've run that while running trafgen, that it's the trafgen
packet socket. Otherwise, you could also try to kill that application,
as that might also consume cycles (in case your kernel doesn't support
direct xmit mode). Other than that and other than this negotiation
issue, you should also dig a bit into the link from that blog, etc.
It's strange that both ports can support T1000/Full according to the output
of "ethtool eth0", "ethtool eth1", but they negotiated to be 100Mbps. Need
to figure out why.
Thanks again!
On Monday, June 8, 2015 at 5:08:26 PM UTC-5, Daniel Borkmann wrote:
On 06/09/2015 12:01 AM, Perf Tech wrote:
Thanks for the suggestion. Here is the output of ifpps. It shows the
kernel. I didn't do any tunning on this system.
Ok, I thought you were talking about 1G, but your link is just 100Mbit.
Do you have anything running in the background of your system that is
listening on a packet socket?
cat /proc/net/packet
3.16.0-23-generic, x86_64, eth0 (e1000e 100Mbit/s link:yes),
t=1000ms,
cpus=4/
4
rx: 0.000 MiB/t 0 pkts/t 0 drops/t
0 err
tx: 9.446 MiB/t 128636 pkts/t 0 drops/t
0 err
ors/t
rx: 0.000 MiB 0 pkts 0 drops
0 err
ortx: 883.624 MiB 12033079 pkts 0 drops
0 err
ors
sys: 726 cs/t 143 procs 5 running
0 iow
ait
mem: 3833M total 568M used 348M active
121M ina
ctswap: 3971M total 0M used 0M cached
cpu3 +: 6.9% usr/t 93.1% sys/t 0.0% idl/t
0.0% iow
/tcpu1 |: 5.0% usr/t 95.0% sys/t 0.0% idl/t
0.0% iow
/tcpu0 |: 5.3% usr/t 94.7% sys/t 0.0% idl/t
0.0% iow
/tcpu2 -: 5.1% usr/t 94.9% sys/t 0.0% idl/t
0.0% iow
/tavg: 5.4% 94.6% 0.0%
0.0%
cpu0 +: 4012 irqs/t 4012 sirq rx/t
4012
sirq
tcpu3 |: 0 irqs/t 1 sirq rx/t
0
sir
On Monday, June 8, 2015 at 4:55:07 PM UTC-5, Daniel Borkmann wrote:
On 06/08/2015 11:46 PM, Daniel Borkmann wrote:
On 06/06/2015 01:05 AM, Perf Tech wrote:
I have a PC with 3 NICs (eth0 is Intel 82579LM NIC, eth1 is 82574L),
OS is
ubuntu 12.04 server.
I connected eth0 and eth1 with a ethernet cable and both ports are
up.
Trying to find out how fast trafgen(0.5.9-rc4) can send packets on
this
system.
# ./trafgen --dev eth0 --conf tmp2.txt --cpp
4 packets to schedule
292 bytes in total
Running! Hang up with ^C!
I am monitoring "ifconfig eth0" with a monitoring program that I have
used
There's a tool in the netsniff-ng repo called ifpps, you might also
want
to
check that out.
many years, the issue is, trafgen is only sending
pcap at a rate 129000 packets/sec with data rate of 79Mbps. I had
expected it to be a long higher.
What kernel and NIC driver do you use? Did you do any particular
tuning
settings?
E.g. a starting point could be:
http://netoptimizer.blogspot.ch/2014/09/network-setup-for-accurate-nanosec.html
Also, if your config uses checksumming, it's done in trafgen in
software,
so if you want to test a simple minimal config, you could use a static
buffer
as a start.
Did I run the command wrong?
Thanks
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