Hello,
I have tried increasing the workers from 2 to 5 and rx/tx queues from 1024
(default) to 2048 ,also decreasing till 256 but of no use.
As you told, vector is very high (> 100). Please let us know if there is
any other way or reason for the same.
Thread 1 vpp_wk_0 (lcore 2)
Time 41.3, 10 sec internal node vector rate 79.42 loops/sec 3628.25
vector rates in 1.9388e5, out 6.5319e2, drop 1.9322e5, punt 0.0000e0
Name State Calls Vectors
Suspends Clocks Vectors/Call
TenGigabitEthernet4/0/0-output active 19735 26978
0 2.12e3 1.37
TenGigabitEthernet4/0/0-tx active 19735 26969
0 1.43e3 1.37
dpdk-input polling 10241833 8004674
0 2.81e3 .78
drop active 92422 7977696
0 1.31e3 86.32
error-drop active 92422 7977696
0 6.82e1 86.32
ethernet-input active 93109 8004674
0 1.84e2 85.97
gtpu4-input active 93106 8004671
0 3.29e2 85.97
ip4-drop active 2 2
0 1.33e4 1.00
ip4-input active 93106 8004671
0 6.82e2 85.97
ip4-input-no-checksum active 93106 8004673
0 2.37e2 85.97
ip4-local active 93106 8004671
0 2.66e2 85.97
ip4-lookup active 112841 8031651
0 3.55e2 71.18
ip4-policer-classify active 93106 8004671
0 1.35e3 85.97
ip4-rewrite active 19735 26978
0 2.43e3 1.37
ip4-udp-lookup active 93106 8004671
0 3.17e2 85.97
ip6-input active 1 1
0 1.99e4 1.00
ip6-not-enabled active 1 1
0 2.59e4 1.00
unix-epoll-input polling 9998 0
0 3.30e3 0.00
---------------
Thread 2 vpp_wk_1 (lcore 3)
Time 41.3, 10 sec internal node vector rate 0.00 loops/sec 988640.31
vector rates in 0.0000e0, out 0.0000e0, drop 0.0000e0, punt 0.0000e0
Name State Calls Vectors
Suspends Clocks Vectors/Call
dpdk-input polling 37858263 0
0 1.14e3 0.00
unix-epoll-input polling 36940 0
0 3.54e3 0.00
---------------
Thread 3 vpp_wk_2 (lcore 4)
Time 41.3, 10 sec internal node vector rate 0.00 loops/sec 983700.23
vector rates in 4.8441e-2, out 0.0000e0, drop 4.8441e-2, punt 0.0000e0
Name State Calls Vectors
Suspends Clocks Vectors/Call
dpdk-input polling 37820862 2
0 2.16e10 0.00
drop active 2 2
0 9.34e3 1.00
error-drop active 2 2
0 7.78e3 1.00
ethernet-input active 2 2
0 2.44e4 1.00
ip6-input active 2 2
0 1.06e4 1.00
ip6-not-enabled active 2 2
0 8.75e3 1.00
unix-epoll-input polling 36906 0
0 3.54e3 0.00
---------------
Thread 4 vpp_wk_3 (lcore 5)
Time 41.3, 10 sec internal node vector rate 0.00 loops/sec 985307.67
vector rates in 0.0000e0, out 0.0000e0, drop 0.0000e0, punt 0.0000e0
Name State Calls Vectors
Suspends Clocks Vectors/Call
dpdk-input polling 37834354 0
0 1.14e3 0.00
unix-epoll-input polling 36918 0
0 3.47e3 0.00
Thanks,
Akash
On Tue, Sep 28, 2021 at 4:09 PM Akash S R via lists.fd.io <akashsr.akashsr=
gmail....@lists.fd.io> wrote:
> Thanks mate, that makes sense. Will check it out and get back .
>
>
> Thanks,
> Akash
>
> On Tue, Sep 28, 2021, 16:00 Benoit Ganne (bganne) <bga...@cisco.com>
> wrote:
>
>> Rx-miss means the NIC must drop packets on RX because the rx queue was
>> full, usually because VPP cannot keep up with the incoming packet rate.
>> You can check it with the output of 'show run'. If you see a big average
>> vector size (100 or more) it means VPP is busy.
>> To improve that you must increase the number of VPP workers (and rx
>> queues).
>> Rx-misses can also be caused by traffic spikes. In that case you can
>> increase the rx queues size to absorb the bursts.
>>
>> Best
>> ben
>>
>> > -----Original Message-----
>> > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Akash S R
>> > Sent: mardi 28 septembre 2021 11:43
>> > To: vpp-dev <vpp-dev@lists.fd.io>
>> > Subject: [vpp-dev] rx-miss while sending packets to Interface
>> (IMPORTANT)
>> >
>> > Hello mates,
>> >
>> > Its been a long time, me , raising a query out here to you guys :) (Nah,
>> > Please ignore this junk.)
>> >
>> > I have a question on rx-miss. Whenever we fire packets at some high
>> rate,
>> > say 1GBPS or more, I get rx-miss on the interface with some packet
>> count.
>> > I referred to a link below from the VPP forum:
>> https://lists.fd.io/g/vpp-
>> > dev/topic/78179815#17985
>> >
>> > TenGigabitEthernet4/0/1 3 up 1500/0/0/0 rx
>> > packets 8622948
>> > rx
>> > bytes 1103737344
>> > ip4
>> > 8622948
>> > rx-
>> > miss 283721416
>> >
>> > But the buffer is available and allocated is less. I reduced the queues
>> to
>> > 256 and threads to 4.
>> > But still the issue is not resolved.
>> > DBGvpp# show dpdk buffer
>> > name="vpp pool 0" available = 13984 allocated = 2816 total =
>> 16800
>> >
>> > May I know the reason for this rx-miss and any kinda resolution for
>> this
>> > issue?
>> >
>> > Thanks,
>> > Akash
>>
>>
>
>
>
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