From: Paul Tsvika <mozloverinweb@gmail.com>
To: users@dpdk.org
Subject: [dpdk-users] [pktgen] pktgen Tx/Rx rates are not the same in loopback testing case
Date: Fri, 21 Jul 2017 23:11:29 +0800 [thread overview]
Message-ID: <CAGi_MX=XPUVKT-yUnD_F7FiF8qzgSQN1HFVF1vyKq90yKo0=5A@mail.gmail.com> (raw)
Hi developers,
Below is my hardware configuration:
Memory: 32G ( 16 G on two channels )
CPU: Xeon-D 1557 ( 12 cores, hyperthreading - 24 core )
NIC: Intel X552/X557 10GBASE-T
My motherboard has 2 10G ports so that I set up the testing experiment in
loopback.
I have compiled DPDK successfully and below is the steps how I configured
pktgen
$ sudo modprobe uio
$ sudo insmod ./build/kmod/igb_uio.ko
$ sudo ./usertools/dpdkdevbind.py -b igb_uio xxx:xx.0 xxx:xx.1
$ sudo ./app/pktgen -c 0x1f -n 2 -- -P -m "[1:3].0, [2:4].1"
<pktgen> start 0
I use core 1 and core 3 work for port 0 tx/rx respectively. Core 2 and core
4 work for port 1 tx/rx respectively.
I have some questions listed below:
1.
( check my attachment d2.png )
The TX rate is almost 10G, however, the RX rate is much lower than TX rate.
I suppose this should not happen. Is my configuration wrong in any place ?
I checked other developers and TX rate normally can reach 999x and RX rate
is almost the same as TX rate.
2.
Please check the attachment ( start_log ).
2.1
*Packet Burst 32, RX Desc 512, TX Desc 1024*, mbufs/port 8192, mbuf cache
1024
Is 32 the default packet size ? How can I configure it to 64 ?
Why RX Desc is different to TX Desc ?
2,2
*Port 0: Link Down <Enable promiscuous mode>*
Port 1: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
Port 0 is down at some points, how can I check the root cause to this issue?
Thanks
--
P.T
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next reply other threads:[~2017-07-21 15:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-21 15:11 Paul Tsvika [this message]
2017-07-21 15:40 ` Wiles, Keith
2017-07-22 1:49 ` Paul Tsvika
2017-07-25 9:04 ` Paul Tsvika
2017-07-25 14:10 ` Wiles, Keith
2017-07-26 9:02 ` Paul Tsvika
2017-07-26 14:55 ` Wiles, Keith
2017-07-26 16:44 ` Wiles, Keith
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