Re: Performance issue with igb with lots of different src-ip addrs.

2017-03-24 Thread Ben Greear
On 03/16/2017 08:51 PM, Ben Greear wrote: I think we can, might take us a day or two to get time to do it. Thanks, Ben On 03/16/2017 08:05 PM, Alexander Duyck wrote: I'm not really interested in installing a custom version of pktgen. Any chance you can recreate the issue with standard pktgen?

Re: Performance issue with igb with lots of different src-ip addrs.

2017-03-16 Thread Ben Greear
I think we can, might take us a day or two to get time to do it. Thanks, Ben On 03/16/2017 08:05 PM, Alexander Duyck wrote: I'm not really interested in installing a custom version of pktgen. Any chance you can recreate the issue with standard pktgen? You might try running perf to get a snapsh

Re: Performance issue with igb with lots of different src-ip addrs.

2017-03-16 Thread Ben Greear
I'm actually using a hacked up version of pktgen nicely driven by our GUI tool, but the crux is that you need to set min and max src IP to some large range. We are driving pktgen from a separate machine. Stock pktgen isn't good at reporting received pkts last I checked, so it may be more diffic

Re: Performance issue with igb with lots of different src-ip addrs.

2017-03-16 Thread Alexander Duyck
I'm not really interested in installing a custom version of pktgen. Any chance you can recreate the issue with standard pktgen? You might try running perf to get a snapshot of what is using CPU time on the system. It will probably give you a pretty good idea where the code is that is eating up al

Re: Performance issue with igb with lots of different src-ip addrs.

2017-03-16 Thread Alexander Duyck
Can you include the pktgen script you are running? Also when you say you are driving traffic through the bridge are you sending from something external on the system or are you actually directing the traffic from pktgen into the bridge directly? - Alex On Thu, Mar 16, 2017 at 3:49 PM, Ben Greear

Performance issue with igb with lots of different src-ip addrs.

2017-03-16 Thread Ben Greear
Hello, We notice that when using two igb ports as a bridge, if we use pktgen to drive traffic through the bridge and randomize (or use a very large range) for the source IP addr in pktgen, then performance of igb is very poor (like 150Mbps throughput instead of 1Gbps). It runs right at line spe