* [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
@ 2014-01-08 23:24 Dan Kan
2014-01-09 18:49 ` Daniel Kan
0 siblings, 1 reply; 7+ messages in thread
From: Dan Kan @ 2014-01-08 23:24 UTC (permalink / raw)
To: dev
I'm evaluating DPDK using dpdk-1.5.1r1. I have been playing around with the
test-pmd sample app. I'm having a hard time to get RSS to work. I have a
2-port 82599 Intel X540-DA2 NIC. I'm running the following command to start
the app.
sudo ./testpmd -c 0x1f -n 2 -- -i --portmask=0x3 --nb-cores=4 --rxq=4
--txq=4
I have a packet generator that sends udp packets with various src IP.
According testpmd, I'm only receiving packets in port 0's queue 0. Packets
are not going into any other queues. I have attached the output from
testpmd.
------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0
-------
RX-packets: 1000000 TX-packets: 1000000 TX-dropped:
0
---------------------- Forward statistics for port 0
----------------------
RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
TX-packets: 0 TX-dropped: 0 TX-total: 0
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1
----------------------
RX-packets: 0 RX-dropped: 0 RX-total: 0
TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all
ports+++++++++++++++
RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
On a separate note, I also find that the CPU utilization using 1 forwarding
core for 2 ports seems to be better (in the aggregate sense) than using 2
forwarding cores for 2 ports. Running at 10gbps line rate of pktlen=400,
with 1 core, the core's utilization is 40%. With 2 cores, each core's
utilization would 30%, giving an aggregate of 60%.
I have a use case of only doing rxonly packet processing. From my initial
test, it seems that it's more efficient to have a single core read packets
from both ports, and distribute the packet using rte_ring instead of having
each core read from its port. The rte_eth_rx operations appear to be much
CPU intensive than rte_ring_dequeue operations.
Thanks in advance.
Dan
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
2014-01-08 23:24 [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question Dan Kan
@ 2014-01-09 18:49 ` Daniel Kan
2014-01-09 23:11 ` Thomas Monjalon
0 siblings, 1 reply; 7+ messages in thread
From: Daniel Kan @ 2014-01-09 18:49 UTC (permalink / raw)
To: dev
The problem appears to be that rxmode.mq_mode was never set to ETH_MQ_RX_RSS in testpmd.c; it’s initialized to 0. There should probably be a configuration for that, or should be set when rxq > 1.
Dan
On Jan 8, 2014, at 3:24 PM, Dan Kan <dan@nyansa.com> wrote:
> I'm evaluating DPDK using dpdk-1.5.1r1. I have been playing around with the test-pmd sample app. I'm having a hard time to get RSS to work. I have a 2-port 82599 Intel X540-DA2 NIC. I'm running the following command to start the app.
>
> sudo ./testpmd -c 0x1f -n 2 -- -i --portmask=0x3 --nb-cores=4 --rxq=4 --txq=4
>
> I have a packet generator that sends udp packets with various src IP. According testpmd, I'm only receiving packets in port 0's queue 0. Packets are not going into any other queues. I have attached the output from testpmd.
>
>
> ------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0 -------
> RX-packets: 1000000 TX-packets: 1000000 TX-dropped: 0
> ---------------------- Forward statistics for port 0 ----------------------
> RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> TX-packets: 0 TX-dropped: 0 TX-total: 0
> ----------------------------------------------------------------------------
>
> ---------------------- Forward statistics for port 1 ----------------------
> RX-packets: 0 RX-dropped: 0 RX-total: 0
> TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
> ----------------------------------------------------------------------------
>
> +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
> RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> On a separate note, I also find that the CPU utilization using 1 forwarding core for 2 ports seems to be better (in the aggregate sense) than using 2 forwarding cores for 2 ports. Running at 10gbps line rate of pktlen=400, with 1 core, the core's utilization is 40%. With 2 cores, each core's utilization would 30%, giving an aggregate of 60%.
>
> I have a use case of only doing rxonly packet processing. From my initial test, it seems that it's more efficient to have a single core read packets from both ports, and distribute the packet using rte_ring instead of having each core read from its port. The rte_eth_rx operations appear to be much CPU intensive than rte_ring_dequeue operations.
>
> Thanks in advance.
>
> Dan
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
2014-01-09 18:49 ` Daniel Kan
@ 2014-01-09 23:11 ` Thomas Monjalon
2014-01-10 1:02 ` Dan Kan
0 siblings, 1 reply; 7+ messages in thread
From: Thomas Monjalon @ 2014-01-09 23:11 UTC (permalink / raw)
To: Daniel Kan; +Cc: dev
Hello,
09/01/2014 10:49, Daniel Kan :
> The problem appears to be that rxmode.mq_mode was never set to ETH_MQ_RX_RSS
> in testpmd.c; it’s initialized to 0.
You're right. Its broken since the commit "ETH_MQ_RX_NONE should disable RSS":
http://dpdk.org/browse/dpdk/commit/?id=243db2ddee3094a2cb39fdd4b17e26df4e7735e1
> There should probably be a configuration for that, or should be set when
> rxq > 1.
RSS can be configured or disabled with testpmd options or commands.
So it must be fixed in 2 places:
- in app/test-pmd/parameters.c for options
- in app/test-pmd/cmdline.c for commands
When setting rss_hf, mq_mode must be set accordingly.
Note that DCB feature can use mq_mode.
Thanks for the report. Patch is welcome :)
--
Thomas
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
2014-01-09 23:11 ` Thomas Monjalon
@ 2014-01-10 1:02 ` Dan Kan
0 siblings, 0 replies; 7+ messages in thread
From: Dan Kan @ 2014-01-10 1:02 UTC (permalink / raw)
To: Thomas Monjalon; +Cc: dev
I think the following change might be sufficient. DCB seems to use its own
init_port_dcb_config(), which would reset mq_mode. If this is good, I can
submit the patch. Thanks.
index b11eb2e..355db0f 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1546,6 +1546,9 @@ init_port_config(void)
if (nb_rxq > 0) {
port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
port->dev_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
+ if (nb_rxq > 1 && rss_hf != 0) {
+ port->dev_conf.rxmode.mq_mode =
ETH_MQ_RX_RSS;
+ }
} else {
port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
port->dev_conf.rx_adv_conf.rss_conf.rss_hf = 0;
On Thu, Jan 9, 2014 at 3:11 PM, Thomas Monjalon
<thomas.monjalon@6wind.com>wrote:
> Hello,
>
> 09/01/2014 10:49, Daniel Kan :
> > The problem appears to be that rxmode.mq_mode was never set to
> ETH_MQ_RX_RSS
> > in testpmd.c; it’s initialized to 0.
>
> You're right. Its broken since the commit "ETH_MQ_RX_NONE should
> disable RSS":
>
> http://dpdk.org/browse/dpdk/commit/?id=243db2ddee3094a2cb39fdd4b17e26df4e7735e1
>
> > There should probably be a configuration for that, or should be set when
> > rxq > 1.
>
> RSS can be configured or disabled with testpmd options or commands.
> So it must be fixed in 2 places:
> - in app/test-pmd/parameters.c for options
> - in app/test-pmd/cmdline.c for commands
> When setting rss_hf, mq_mode must be set accordingly.
>
> Note that DCB feature can use mq_mode.
>
> Thanks for the report. Patch is welcome :)
> --
> Thomas
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
@ 2014-01-10 2:07 Choi, Sy Jong
2014-01-10 2:35 ` Daniel Kan
0 siblings, 1 reply; 7+ messages in thread
From: Choi, Sy Jong @ 2014-01-10 2:07 UTC (permalink / raw)
To: dev
Hi Dan,
I have tested with 6 flows with identical ip address, but varies UDP port number. I can see both queues with traffic.
Using the following command:-
sudo ./app/testpmd -c 0x1f -n 4 -- -i -rss-udp --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
I have started with RSS IPv4, which is enabled by default.
The critical part is the traffic, since I only 2 queues, I am sending 6 flows with different IP addresses in order to see the flow got distributed evenly. Or else you might see only 1 queues if you have 2 flows they might load to a single queue only.
My Command:-
sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
- Using 4 cores
- Rxq = 2 for each port, so 4 queues to 4 cores.
testpmd> show port stats all
######################## NIC statistics for port 0 ########################
RX-packets: 6306519648 RX-errors: 757945685 RX-bytes: 309383840254
TX-packets: 132592678 TX-errors: 0 TX-bytes: 8485925376
Stats reg 0 RX-packets: 2556150208 RX-errors: 0 RX-bytes: 116477417471
Stats reg 1 RX-packets: 3750369440 RX-errors: 0 RX-bytes: 192906422783
Stats reg 2 RX-packets: 0 RX-errors: 0 RX-bytes: 0
.
.
.
Stats reg 15 RX-packets: 0 RX-errors: 0 RX-bytes: 0
############################################################################
######################## NIC statistics for port 1 ########################
RX-packets: 132594048 RX-errors: 13825889 RX-bytes: 8486020288
TX-packets: 6306522739 TX-errors: 0 TX-bytes: 231983528894
Stats reg 0 RX-packets: 83615783 RX-errors: 0 RX-bytes: 5351410624
Stats reg 1 RX-packets: 48978265 RX-errors: 0 RX-bytes: 3134609664
Stats reg 2 RX-packets: 0 RX-errors: 0 RX-bytes: 0
.
.
.
Stats reg 15 RX-packets: 0 RX-errors: 0 RX-bytes: 0
############################################################################
testpmd>
My Command:-
sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
- Using 4 cores
- Rxq = 2 for each port, so 4 queues to 4 cores.
I use this command to map the queue statistic.
testpmd> set stat_qmap rx 0 0 0
testpmd> set stat_qmap rx 0 1 1
testpmd> set stat_qmap rx 1 0 0
testpmd> set stat_qmap rx 1 1 1
testpmd> start
io packet forwarding - CRC stripping disabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=2 - RX desc=128 - RX free threshold=0
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=2 - TX desc=512 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> show port stats all
Regards,
Choi, Sy Jong
Platform Application Engineer
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Dan Kan
Sent: Wednesday, January 08, 2014 3:25 PM
To: dev@dpdk.org
Subject: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
I'm evaluating DPDK using dpdk-1.5.1r1. I have been playing around with the test-pmd sample app. I'm having a hard time to get RSS to work. I have a 2-port 82599 Intel X540-DA2 NIC. I'm running the following command to start the app.
sudo ./testpmd -c 0x1f -n 2 -- -i --portmask=0x3 --nb-cores=4 --rxq=4
--txq=4
I have a packet generator that sends udp packets with various src IP.
According testpmd, I'm only receiving packets in port 0's queue 0. Packets are not going into any other queues. I have attached the output from testpmd.
------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0
-------
RX-packets: 1000000 TX-packets: 1000000 TX-dropped:
0
---------------------- Forward statistics for port 0
----------------------
RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
TX-packets: 0 TX-dropped: 0 TX-total: 0
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1
----------------------
RX-packets: 0 RX-dropped: 0 RX-total: 0
TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all
ports+++++++++++++++
RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
On a separate note, I also find that the CPU utilization using 1 forwarding core for 2 ports seems to be better (in the aggregate sense) than using 2 forwarding cores for 2 ports. Running at 10gbps line rate of pktlen=400, with 1 core, the core's utilization is 40%. With 2 cores, each core's utilization would 30%, giving an aggregate of 60%.
I have a use case of only doing rxonly packet processing. From my initial test, it seems that it's more efficient to have a single core read packets from both ports, and distribute the packet using rte_ring instead of having each core read from its port. The rte_eth_rx operations appear to be much CPU intensive than rte_ring_dequeue operations.
Thanks in advance.
Dan
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
2014-01-10 2:07 Choi, Sy Jong
@ 2014-01-10 2:35 ` Daniel Kan
2014-01-10 16:04 ` Michael Quicquaro
0 siblings, 1 reply; 7+ messages in thread
From: Daniel Kan @ 2014-01-10 2:35 UTC (permalink / raw)
To: Choi, Sy Jong; +Cc: dev
Thanks, Sy Jong. I couldn’t reproduce your outcome on dpdk 1.5.1 with ixgbe. As I sent in the earlier email, rxmode.mq_mode is defaulted to 0 (i.e. ETH_MQ_RX_NONE); it should be set to ETH_MQ_RX_RSS.
Dan
On Jan 9, 2014, at 6:07 PM, Choi, Sy Jong <sy.jong.choi@intel.com> wrote:
>
> Hi Dan,
>
> I have tested with 6 flows with identical ip address, but varies UDP port number. I can see both queues with traffic.
> Using the following command:-
> sudo ./app/testpmd -c 0x1f -n 4 -- -i -rss-udp --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
>
>
> I have started with RSS IPv4, which is enabled by default.
> The critical part is the traffic, since I only 2 queues, I am sending 6 flows with different IP addresses in order to see the flow got distributed evenly. Or else you might see only 1 queues if you have 2 flows they might load to a single queue only.
>
> My Command:-
> sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
> - Using 4 cores
> - Rxq = 2 for each port, so 4 queues to 4 cores.
>
>
>
> testpmd> show port stats all
>
> ######################## NIC statistics for port 0 ########################
> RX-packets: 6306519648 RX-errors: 757945685 RX-bytes: 309383840254
> TX-packets: 132592678 TX-errors: 0 TX-bytes: 8485925376
>
> Stats reg 0 RX-packets: 2556150208 RX-errors: 0 RX-bytes: 116477417471
> Stats reg 1 RX-packets: 3750369440 RX-errors: 0 RX-bytes: 192906422783
> Stats reg 2 RX-packets: 0 RX-errors: 0 RX-bytes: 0
> .
> .
> .
> Stats reg 15 RX-packets: 0 RX-errors: 0 RX-bytes: 0
> ############################################################################
>
> ######################## NIC statistics for port 1 ########################
> RX-packets: 132594048 RX-errors: 13825889 RX-bytes: 8486020288
> TX-packets: 6306522739 TX-errors: 0 TX-bytes: 231983528894
>
> Stats reg 0 RX-packets: 83615783 RX-errors: 0 RX-bytes: 5351410624
> Stats reg 1 RX-packets: 48978265 RX-errors: 0 RX-bytes: 3134609664
> Stats reg 2 RX-packets: 0 RX-errors: 0 RX-bytes: 0
> .
> .
> .
> Stats reg 15 RX-packets: 0 RX-errors: 0 RX-bytes: 0
> ############################################################################
> testpmd>
>
>
>
>
> My Command:-
> sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4 --rxq=2 --txq=2
> - Using 4 cores
> - Rxq = 2 for each port, so 4 queues to 4 cores.
>
> I use this command to map the queue statistic.
> testpmd> set stat_qmap rx 0 0 0
> testpmd> set stat_qmap rx 0 1 1
> testpmd> set stat_qmap rx 1 0 0
> testpmd> set stat_qmap rx 1 1 1
> testpmd> start
> io packet forwarding - CRC stripping disabled - packets/burst=16
> nb forwarding cores=2 - nb forwarding ports=2
> RX queues=2 - RX desc=128 - RX free threshold=0
> RX threshold registers: pthresh=8 hthresh=8 wthresh=4
> TX queues=2 - TX desc=512 - TX free threshold=0
> TX threshold registers: pthresh=36 hthresh=0 wthresh=0
> TX RS bit threshold=0 - TXQ flags=0x0
>
> testpmd> show port stats all
>
>
>
> Regards,
> Choi, Sy Jong
> Platform Application Engineer
>
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Dan Kan
> Sent: Wednesday, January 08, 2014 3:25 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
>
> I'm evaluating DPDK using dpdk-1.5.1r1. I have been playing around with the test-pmd sample app. I'm having a hard time to get RSS to work. I have a 2-port 82599 Intel X540-DA2 NIC. I'm running the following command to start the app.
>
> sudo ./testpmd -c 0x1f -n 2 -- -i --portmask=0x3 --nb-cores=4 --rxq=4
> --txq=4
>
> I have a packet generator that sends udp packets with various src IP.
> According testpmd, I'm only receiving packets in port 0's queue 0. Packets are not going into any other queues. I have attached the output from testpmd.
>
>
> ------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0
> -------
> RX-packets: 1000000 TX-packets: 1000000 TX-dropped:
> 0
> ---------------------- Forward statistics for port 0
> ----------------------
> RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> TX-packets: 0 TX-dropped: 0 TX-total: 0
>
> ----------------------------------------------------------------------------
>
> ---------------------- Forward statistics for port 1
> ----------------------
> RX-packets: 0 RX-dropped: 0 RX-total: 0
> TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
>
> ----------------------------------------------------------------------------
>
> +++++++++++++++ Accumulated forward statistics for all
> ports+++++++++++++++
> RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> On a separate note, I also find that the CPU utilization using 1 forwarding core for 2 ports seems to be better (in the aggregate sense) than using 2 forwarding cores for 2 ports. Running at 10gbps line rate of pktlen=400, with 1 core, the core's utilization is 40%. With 2 cores, each core's utilization would 30%, giving an aggregate of 60%.
>
> I have a use case of only doing rxonly packet processing. From my initial test, it seems that it's more efficient to have a single core read packets from both ports, and distribute the packet using rte_ring instead of having each core read from its port. The rte_eth_rx operations appear to be much CPU intensive than rte_ring_dequeue operations.
>
> Thanks in advance.
>
> Dan
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question
2014-01-10 2:35 ` Daniel Kan
@ 2014-01-10 16:04 ` Michael Quicquaro
0 siblings, 0 replies; 7+ messages in thread
From: Michael Quicquaro @ 2014-01-10 16:04 UTC (permalink / raw)
To: Daniel Kan; +Cc: dev
Why are there so many RX-errors?
On Thu, Jan 9, 2014 at 9:35 PM, Daniel Kan <dan@nyansa.com> wrote:
> Thanks, Sy Jong. I couldn’t reproduce your outcome on dpdk 1.5.1 with
> ixgbe. As I sent in the earlier email, rxmode.mq_mode is defaulted to 0
> (i.e. ETH_MQ_RX_NONE); it should be set to ETH_MQ_RX_RSS.
>
> Dan
>
> On Jan 9, 2014, at 6:07 PM, Choi, Sy Jong <sy.jong.choi@intel.com> wrote:
>
> >
> > Hi Dan,
> >
> > I have tested with 6 flows with identical ip address, but varies UDP
> port number. I can see both queues with traffic.
> > Using the following command:-
> > sudo ./app/testpmd -c 0x1f -n 4 -- -i -rss-udp --portmask=0x03
> --nb-cores=4 --rxq=2 --txq=2
> >
> >
> > I have started with RSS IPv4, which is enabled by default.
> > The critical part is the traffic, since I only 2 queues, I am sending 6
> flows with different IP addresses in order to see the flow got distributed
> evenly. Or else you might see only 1 queues if you have 2 flows they might
> load to a single queue only.
> >
> > My Command:-
> > sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4
> --rxq=2 --txq=2
> > - Using 4 cores
> > - Rxq = 2 for each port, so 4 queues to 4 cores.
> >
> >
> >
> > testpmd> show port stats all
> >
> > ######################## NIC statistics for port 0
> ########################
> > RX-packets: 6306519648 RX-errors: 757945685
> RX-bytes: 309383840254
> > TX-packets: 132592678 TX-errors: 0
> TX-bytes: 8485925376
> >
> > Stats reg 0 RX-packets: 2556150208 RX-errors: 0
> RX-bytes: 116477417471
> > Stats reg 1 RX-packets: 3750369440 RX-errors: 0
> RX-bytes: 192906422783
> > Stats reg 2 RX-packets: 0 RX-errors: 0
> RX-bytes: 0
> > .
> > .
> > .
> > Stats reg 15 RX-packets: 0 RX-errors: 0
> RX-bytes: 0
> >
> ############################################################################
> >
> > ######################## NIC statistics for port 1
> ########################
> > RX-packets: 132594048 RX-errors: 13825889
> RX-bytes: 8486020288
> > TX-packets: 6306522739 TX-errors: 0
> TX-bytes: 231983528894
> >
> > Stats reg 0 RX-packets: 83615783 RX-errors: 0
> RX-bytes: 5351410624
> > Stats reg 1 RX-packets: 48978265 RX-errors: 0
> RX-bytes: 3134609664
> > Stats reg 2 RX-packets: 0 RX-errors: 0
> RX-bytes: 0
> > .
> > .
> > .
> > Stats reg 15 RX-packets: 0 RX-errors: 0
> RX-bytes: 0
> >
> ############################################################################
> > testpmd>
> >
> >
> >
> >
> > My Command:-
> > sudo ./app/testpmd -c 0x1f -n 4 -- -i --portmask=0x03 --nb-cores=4
> --rxq=2 --txq=2
> > - Using 4 cores
> > - Rxq = 2 for each port, so 4 queues to 4 cores.
> >
> > I use this command to map the queue statistic.
> > testpmd> set stat_qmap rx 0 0 0
> > testpmd> set stat_qmap rx 0 1 1
> > testpmd> set stat_qmap rx 1 0 0
> > testpmd> set stat_qmap rx 1 1 1
> > testpmd> start
> > io packet forwarding - CRC stripping disabled - packets/burst=16
> > nb forwarding cores=2 - nb forwarding ports=2
> > RX queues=2 - RX desc=128 - RX free threshold=0
> > RX threshold registers: pthresh=8 hthresh=8 wthresh=4
> > TX queues=2 - TX desc=512 - TX free threshold=0
> > TX threshold registers: pthresh=36 hthresh=0 wthresh=0
> > TX RS bit threshold=0 - TXQ flags=0x0
> >
> > testpmd> show port stats all
> >
> >
> >
> > Regards,
> > Choi, Sy Jong
> > Platform Application Engineer
> >
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Dan Kan
> > Sent: Wednesday, January 08, 2014 3:25 PM
> > To: dev@dpdk.org
> > Subject: [dpdk-dev] Unable to get RSS to work in testpmd and load
> balancing question
> >
> > I'm evaluating DPDK using dpdk-1.5.1r1. I have been playing around with
> the test-pmd sample app. I'm having a hard time to get RSS to work. I have
> a 2-port 82599 Intel X540-DA2 NIC. I'm running the following command to
> start the app.
> >
> > sudo ./testpmd -c 0x1f -n 2 -- -i --portmask=0x3 --nb-cores=4 --rxq=4
> > --txq=4
> >
> > I have a packet generator that sends udp packets with various src IP.
> > According testpmd, I'm only receiving packets in port 0's queue 0.
> Packets are not going into any other queues. I have attached the output
> from testpmd.
> >
> >
> > ------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0
> > -------
> > RX-packets: 1000000 TX-packets: 1000000 TX-dropped:
> > 0
> > ---------------------- Forward statistics for port 0
> > ----------------------
> > RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> > TX-packets: 0 TX-dropped: 0 TX-total: 0
> >
> >
> ----------------------------------------------------------------------------
> >
> > ---------------------- Forward statistics for port 1
> > ----------------------
> > RX-packets: 0 RX-dropped: 0 RX-total: 0
> > TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
> >
> >
> ----------------------------------------------------------------------------
> >
> > +++++++++++++++ Accumulated forward statistics for all
> > ports+++++++++++++++
> > RX-packets: 1000000 RX-dropped: 0 RX-total: 1000000
> > TX-packets: 1000000 TX-dropped: 0 TX-total: 1000000
> >
> >
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> > On a separate note, I also find that the CPU utilization using 1
> forwarding core for 2 ports seems to be better (in the aggregate sense)
> than using 2 forwarding cores for 2 ports. Running at 10gbps line rate of
> pktlen=400, with 1 core, the core's utilization is 40%. With 2 cores, each
> core's utilization would 30%, giving an aggregate of 60%.
> >
> > I have a use case of only doing rxonly packet processing. From my
> initial test, it seems that it's more efficient to have a single core read
> packets from both ports, and distribute the packet using rte_ring instead
> of having each core read from its port. The rte_eth_rx operations appear to
> be much CPU intensive than rte_ring_dequeue operations.
> >
> > Thanks in advance.
> >
> > Dan
> >
>
>
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2014-01-10 16:03 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-01-08 23:24 [dpdk-dev] Unable to get RSS to work in testpmd and load balancing question Dan Kan
2014-01-09 18:49 ` Daniel Kan
2014-01-09 23:11 ` Thomas Monjalon
2014-01-10 1:02 ` Dan Kan
2014-01-10 2:07 Choi, Sy Jong
2014-01-10 2:35 ` Daniel Kan
2014-01-10 16:04 ` Michael Quicquaro
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