[Support]: ens5 selects TX queue N, but real number of TX queues is M

[freeball155]

Preliminary Actions

• I have searched the existing issues and didn't find a duplicate.
• I have followed the AWS official troubleshoot documentation.
• I have followed the driver readme and best practices.

Driver Type

Linux kernel driver for Elastic Network Adapter (ENA)

Driver Tag/Commit

6.2.0-1012-aws

Custom Code

No

OS Platform and Distribution

Linux 6.2.0-1012-aws #12-Ubuntu
Instance type: c5n.large
AMI: aws-marketplace/ubuntu/images/hvm-ssd/ubuntu-lunar-23.04-amd64-server-20230725-e2e33685-9a6f-4cb6-ae4e-eb075484baed

Support request

Hi.

I've noticed these messages in syslog:
Sep 22 07:40:15 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:40:17 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:40:22 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:40:30 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:40:46 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:41:18 ip-172-29-10-138 kernel: ens5 selects TX queue 2, but real number of TX queues is 2
Sep 22 07:43:29 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:43:30 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:43:32 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:43:37 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:43:45 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:44:01 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2
Sep 22 07:44:33 ip-172-29-10-138 kernel: ens5 selects TX queue 3, but real number of TX queues is 2

How can I fix it?

ethtool -l ens5
Channel parameters for ens5:
Pre-set maximums:
RX: n/a
TX: n/a
Other: n/a
Combined: 2
Current hardware settings:
RX: n/a
TX: n/a
Other: n/a
Combined: 2

ethtool -i ens5
driver: ena
version: 6.2.0-1012-aws
firmware-version:
expansion-rom-version:
bus-info: 0000:00:05.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

ethtool -S ens5
NIC statistics:
tx_timeout: 0
suspend: 0
resume: 0
wd_expired: 0
interface_up: 2
interface_down: 1
admin_q_pause: 0
bw_in_allowance_exceeded: 0
bw_out_allowance_exceeded: 0
pps_allowance_exceeded: 0
conntrack_allowance_exceeded: 0
linklocal_allowance_exceeded: 0
queue_0_tx_cnt: 477087
queue_0_tx_bytes: 154433575
queue_0_tx_queue_stop: 0
queue_0_tx_queue_wakeup: 0
queue_0_tx_dma_mapping_err: 0
queue_0_tx_linearize: 0
queue_0_tx_linearize_failed: 0
queue_0_tx_napi_comp: 1277288
queue_0_tx_tx_poll: 1277293
queue_0_tx_doorbells: 472347
queue_0_tx_prepare_ctx_err: 0
queue_0_tx_bad_req_id: 0
queue_0_tx_llq_buffer_copy: 118247
queue_0_tx_missed_tx: 0
queue_0_tx_unmask_interrupt: 1277288
queue_0_rx_cnt: 854763
queue_0_rx_bytes: 214892812
queue_0_rx_rx_copybreak_pkt: 729203
queue_0_rx_csum_good: 821918
queue_0_rx_refil_partial: 0
queue_0_rx_csum_bad: 0
queue_0_rx_page_alloc_fail: 0
queue_0_rx_skb_alloc_fail: 0
queue_0_rx_dma_mapping_err: 0
queue_0_rx_bad_desc_num: 0
queue_0_rx_bad_req_id: 0
queue_0_rx_empty_rx_ring: 0
queue_0_rx_csum_unchecked: 26182
queue_0_rx_xdp_aborted: 0
queue_0_rx_xdp_drop: 0
queue_0_rx_xdp_pass: 0
queue_0_rx_xdp_tx: 0
queue_0_rx_xdp_invalid: 0
queue_0_rx_xdp_redirect: 0
queue_1_tx_cnt: 437674
queue_1_tx_bytes: 136123444
queue_1_tx_queue_stop: 0
queue_1_tx_queue_wakeup: 0
queue_1_tx_dma_mapping_err: 0
queue_1_tx_linearize: 0
queue_1_tx_linearize_failed: 0
queue_1_tx_napi_comp: 1776342
queue_1_tx_tx_poll: 1776342
queue_1_tx_doorbells: 437219
queue_1_tx_prepare_ctx_err: 0
queue_1_tx_bad_req_id: 0
queue_1_tx_llq_buffer_copy: 97552
queue_1_tx_missed_tx: 0
queue_1_tx_unmask_interrupt: 1776342
queue_1_rx_cnt: 1348013
queue_1_rx_bytes: 104639036
queue_1_rx_rx_copybreak_pkt: 1337471
queue_1_rx_csum_good: 1348012
queue_1_rx_refil_partial: 0
queue_1_rx_csum_bad: 0
queue_1_rx_page_alloc_fail: 0
queue_1_rx_skb_alloc_fail: 0
queue_1_rx_dma_mapping_err: 0
queue_1_rx_bad_desc_num: 0
queue_1_rx_bad_req_id: 0
queue_1_rx_empty_rx_ring: 0
queue_1_rx_csum_unchecked: 1
queue_1_rx_xdp_aborted: 0
queue_1_rx_xdp_drop: 0
queue_1_rx_xdp_pass: 0
queue_1_rx_xdp_tx: 0
queue_1_rx_xdp_invalid: 0
queue_1_rx_xdp_redirect: 0
ena_admin_q_aborted_cmd: 0
ena_admin_q_submitted_cmd: 49
ena_admin_q_completed_cmd: 49
ena_admin_q_out_of_space: 0
ena_admin_q_no_completion: 0

[davidarinzon]

Hi @freeball155

Thanks for reaching out.
This issue is addressed in version 2.9.1g which was recently released.
You're welcome to try it and let us know whether it resolves the issue/logs that you're seeing.

[freeball155]

Yes. With 2.9.1g errors are gone.
Thank you.