1 What: /sys/class/net/<iface>/queues/ 1 What: /sys/class/net/<iface>/queues/rx-<queue>/rps_cpus
2 Date: March 2010 2 Date: March 2010
3 KernelVersion: 2.6.35 3 KernelVersion: 2.6.35
4 Contact: netdev@vger.kernel.org 4 Contact: netdev@vger.kernel.org
5 Description: 5 Description:
6 Mask of the CPU(s) currently e 6 Mask of the CPU(s) currently enabled to participate into the
7 Receive Packet Steering packet 7 Receive Packet Steering packet processing flow for this
8 network device queue. Possible 8 network device queue. Possible values depend on the number
9 of available CPU(s) in the sys 9 of available CPU(s) in the system.
10 10
11 What: /sys/class/net/<iface>/queues/ 11 What: /sys/class/net/<iface>/queues/rx-<queue>/rps_flow_cnt
12 Date: April 2010 12 Date: April 2010
13 KernelVersion: 2.6.35 13 KernelVersion: 2.6.35
14 Contact: netdev@vger.kernel.org 14 Contact: netdev@vger.kernel.org
15 Description: 15 Description:
16 Number of Receive Packet Steer 16 Number of Receive Packet Steering flows being currently
17 processed by this particular n 17 processed by this particular network device receive queue.
18 18
19 What: /sys/class/net/<iface>/queues/ 19 What: /sys/class/net/<iface>/queues/tx-<queue>/tx_timeout
20 Date: November 2011 20 Date: November 2011
21 KernelVersion: 3.3 21 KernelVersion: 3.3
22 Contact: netdev@vger.kernel.org 22 Contact: netdev@vger.kernel.org
23 Description: 23 Description:
24 Indicates the number of transm 24 Indicates the number of transmit timeout events seen by this
25 network interface transmit que 25 network interface transmit queue.
26 26
27 What: /sys/class/net/<iface>/queues/ 27 What: /sys/class/net/<iface>/queues/tx-<queue>/tx_maxrate
28 Date: March 2015 28 Date: March 2015
29 KernelVersion: 4.1 29 KernelVersion: 4.1
30 Contact: netdev@vger.kernel.org 30 Contact: netdev@vger.kernel.org
31 Description: 31 Description:
32 A Mbps max-rate set for the qu 32 A Mbps max-rate set for the queue, a value of zero means disabled,
33 default is disabled. 33 default is disabled.
34 34
35 What: /sys/class/net/<iface>/queues/ 35 What: /sys/class/net/<iface>/queues/tx-<queue>/xps_cpus
36 Date: November 2010 36 Date: November 2010
37 KernelVersion: 2.6.38 37 KernelVersion: 2.6.38
38 Contact: netdev@vger.kernel.org 38 Contact: netdev@vger.kernel.org
39 Description: 39 Description:
40 Mask of the CPU(s) currently e 40 Mask of the CPU(s) currently enabled to participate into the
41 Transmit Packet Steering packe 41 Transmit Packet Steering packet processing flow for this
42 network device transmit queue. 42 network device transmit queue. Possible values depend on the
43 number of available CPU(s) in 43 number of available CPU(s) in the system.
44 44
45 What: /sys/class/net/<iface>/queues/ 45 What: /sys/class/net/<iface>/queues/tx-<queue>/xps_rxqs
46 Date: June 2018 46 Date: June 2018
47 KernelVersion: 4.18.0 47 KernelVersion: 4.18.0
48 Contact: netdev@vger.kernel.org 48 Contact: netdev@vger.kernel.org
49 Description: 49 Description:
50 Mask of the receive queue(s) c 50 Mask of the receive queue(s) currently enabled to participate
51 into the Transmit Packet Steer 51 into the Transmit Packet Steering packet processing flow for this
52 network device transmit queue. 52 network device transmit queue. Possible values depend on the
53 number of available receive qu 53 number of available receive queue(s) in the network device.
54 Default is disabled. 54 Default is disabled.
55 55
56 What: /sys/class/net/<iface>/queues/ 56 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/hold_time
57 Date: November 2011 57 Date: November 2011
58 KernelVersion: 3.3 58 KernelVersion: 3.3
59 Contact: netdev@vger.kernel.org 59 Contact: netdev@vger.kernel.org
60 Description: 60 Description:
61 Indicates the hold time in mil 61 Indicates the hold time in milliseconds to measure the slack
62 of this particular network dev 62 of this particular network device transmit queue.
63 Default value is 1000. 63 Default value is 1000.
64 64
65 What: /sys/class/net/<iface>/queues/ 65 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/inflight
66 Date: November 2011 66 Date: November 2011
67 KernelVersion: 3.3 67 KernelVersion: 3.3
68 Contact: netdev@vger.kernel.org 68 Contact: netdev@vger.kernel.org
69 Description: 69 Description:
70 Indicates the number of bytes 70 Indicates the number of bytes (objects) in flight on this
71 network device transmit queue. 71 network device transmit queue.
72 72
73 What: /sys/class/net/<iface>/queues/ 73 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit
74 Date: November 2011 74 Date: November 2011
75 KernelVersion: 3.3 75 KernelVersion: 3.3
76 Contact: netdev@vger.kernel.org 76 Contact: netdev@vger.kernel.org
77 Description: 77 Description:
78 Indicates the current limit of 78 Indicates the current limit of bytes allowed to be queued
79 on this network device transmi 79 on this network device transmit queue. This value is clamped
80 to be within the bounds define 80 to be within the bounds defined by limit_max and limit_min.
81 81
82 What: /sys/class/net/<iface>/queues/ 82 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit_max
83 Date: November 2011 83 Date: November 2011
84 KernelVersion: 3.3 84 KernelVersion: 3.3
85 Contact: netdev@vger.kernel.org 85 Contact: netdev@vger.kernel.org
86 Description: 86 Description:
87 Indicates the absolute maximum 87 Indicates the absolute maximum limit of bytes allowed to be
88 queued on this network device 88 queued on this network device transmit queue. See
89 include/linux/dynamic_queue_li 89 include/linux/dynamic_queue_limits.h for the default value.
90 90
91 What: /sys/class/net/<iface>/queues/ 91 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/limit_min
92 Date: November 2011 92 Date: November 2011
93 KernelVersion: 3.3 93 KernelVersion: 3.3
94 Contact: netdev@vger.kernel.org 94 Contact: netdev@vger.kernel.org
95 Description: 95 Description:
96 Indicates the absolute minimum 96 Indicates the absolute minimum limit of bytes allowed to be
97 queued on this network device 97 queued on this network device transmit queue. Default value is
98 0. 98 0.
99 99
100 What: /sys/class/net/<iface>/queues/ 100 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_thrs
101 Date: Jan 2024 101 Date: Jan 2024
102 KernelVersion: 6.9 102 KernelVersion: 6.9
103 Contact: netdev@vger.kernel.org 103 Contact: netdev@vger.kernel.org
104 Description: 104 Description:
105 Tx completion stall detection 105 Tx completion stall detection threshold in ms. Kernel will
106 guarantee to detect all stalls 106 guarantee to detect all stalls longer than this threshold but
107 may also detect stalls longer 107 may also detect stalls longer than half of the threshold.
108 108
109 What: /sys/class/net/<iface>/queues/ 109 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_cnt
110 Date: Jan 2024 110 Date: Jan 2024
111 KernelVersion: 6.9 111 KernelVersion: 6.9
112 Contact: netdev@vger.kernel.org 112 Contact: netdev@vger.kernel.org
113 Description: 113 Description:
114 Number of detected Tx completi 114 Number of detected Tx completion stalls.
115 115
116 What: /sys/class/net/<iface>/queues/ 116 What: /sys/class/net/<iface>/queues/tx-<queue>/byte_queue_limits/stall_max
117 Date: Jan 2024 117 Date: Jan 2024
118 KernelVersion: 6.9 118 KernelVersion: 6.9
119 Contact: netdev@vger.kernel.org 119 Contact: netdev@vger.kernel.org
120 Description: 120 Description:
121 Longest detected Tx completion 121 Longest detected Tx completion stall. Write 0 to clear.
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