[Ntop-misc] PF_RING DNA Testing: Throttling? or Tweaking

[Alfredo Cardigliano]

Charles
it looks like you are loading the dna driver with 64 queues, but you are capturing just from the first one ("-i dna0" == "-i dna0 at 0").
Please try loading the driver with (edit the load_dna_driver.sh script):
insmod ./ixgbe.ko RSS=0,0,0,0
(mono queue)

Regards
Alfredo

On Apr 25, 2012, at 7:12 PM, Charles H. Leggett wrote:

> PF_RING'ers,
> 
> I am testing PF_RING with both the "pf_ring aware in transparent_mode=2" and the unlicensed DNA ixgbe driver.
> 
> With pfcount, I am seeing very different results (see "tests" below).
> 
> In a nutshell while not losing any packets, I am losing 86% of the throughput.
> 
> I figure that either the testing driver is throttling in addition to limiting captures to 5 mins (I don't believe this is the case) or, I have to do some serious tweaking to get it to use more cores, etc.
> 
> I have included info from /proc on pf_ring at the bottom of test 2.
> 
> Please have a look and see if you can point me in the right direction.
> 
> Thanks.
> 
> Tests:
> 
> 1) "pf_ring aware in transparent_mode=2" ixgbe:
> 
> [chl at sensor1 ~]$ sudo pfcount -i p6p1
> Using PF_RING v.5.3.0
> Capturing from p6p1 [90:E2:BA:07:B9:68]
> # Device RX channels: 16
> # Polling threads:    1
> =========================
> Absolute Stats: [125770 pkts rcvd][0 pkts dropped]
> Total Pkts=125770/Dropped=0.0 %
> 125'770 pkts - 87'542'885 bytes
> =========================
> 
> =========================
> Absolute Stats: [417424 pkts rcvd][0 pkts dropped]
> Total Pkts=417424/Dropped=0.0 %
> 417'424 pkts - 328'852'997 bytes [417'375.16 pkt/sec - 2'630.51 Mbit/sec]
> =========================
> Actual Stats: 291654 pkts [1'000.11 ms][291'619.88 pps/1.93 Gbps]
> =========================
> 
> 2) unlicensed DNA ixgbe:
> 
> [chl at sensor1 ~]$ sudo pfcount -i dna0
> ###################################################
> # ERROR: You do not seem to have a valid DNA license for dna0 [Intel 10 Gbit ixgbe 82599-based].
> # ERROR: Please get one at http://shop.ntop.org/.
> ###################################################
> # We're now working in demo mode with packet capture
> # and transmission limited to 5 minutes
> ###################################################
> Using PF_RING v.5.3.0
> Capturing from dna0 [90:E2:BA:07:B9:68]
> # Device RX channels: 64
> # Polling threads:    1
> =========================
> Absolute Stats: [20012 pkts rcvd][0 pkts dropped]
> Total Pkts=20012/Dropped=0.0 %
> 20'012 pkts - 16'791'945 bytes
> =========================
> 
> =========================
> Absolute Stats: [38783 pkts rcvd][0 pkts dropped]
> Total Pkts=38783/Dropped=0.0 %
> 38'783 pkts - 31'467'381 bytes [38'770.32 pkt/sec - 251.66 Mbit/sec]
> =========================
> Actual Stats: 18771 pkts [1'000.32 ms][18'764.88 pps/0.12 Gbps]
> =========================
> 
> [chl at sensor1 src]$ cat /proc/net/pf_ring/info 
> PF_RING Version     : 5.3.0 ($Revision: exported$)
> Ring slots          : 4096
> Slot version        : 13
> Capture TX          : Yes [RX+TX]
> IP Defragment       : No
> Socket Mode         : Standard
> Transparent mode    : No (mode 2)
> Total rings         : 0
> Total plugins       : 0
> 
> [chl at sensor1 src]$ cat /proc/net/pf_ring/dev/dna0/info 
> Name:              dna0
> Index:             18
> Address:           90:E2:BA:07:B9:68
> Polling Mode:      DNA
> Type:              Ethernet
> Family:            Intel ixgbe 82599
> Max # TX Queues:   64
> # Used RX Queues:  64
> 
> --
> Charles H. Leggett
> Information Security Architect
> chl at uga.edu
> 
> 
> 
> 
> 
> 
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