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Update aggregate_voq_counters.md
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vivekverma-arista committed Feb 13, 2024
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Expand Up @@ -47,42 +47,44 @@ Figure 2: Aggregation of VOQ stats
#### CHASSIS_APP_DB Changes

The following new VOQ counters should be available for each VOQ entry in the DB:
* COUNTERS|fsi_id|asic_id|intf:VOQ_index
* SAI_VOQ_STAT_PACKETS
* SAI_VOQ_STAT_BYTES
* SAI_VOQ_STAT_DROPPED_PACKETS
* SAI_VOQ_STAT_DROPPED_BYTES
* `COUNTERS|fsi_id|asic_id|intf@fsi_id|asic_id:VOQ_index`
* `SAI_VOQ_STAT_PACKETS`
* `SAI_VOQ_STAT_BYTES`
* `SAI_VOQ_STAT_DROPPED_PACKETS`
* `SAI_VOQ_STAT_DROPPED_BYTES`
* The first part of the key ( before @ ) `fsi_id|asic_id|intf` denotes the physical location of the interface.
* The second part of the key ( after @ ) `fsi_id|asic_id:VOQ_index` denotes the location of the VOQ and its index.

#### SWSS Changes
##### PortsOrch Changes
PortsOrch will periodically poll the VOQ stats through SAI call `get_queue_stats` and update them into `CHASSIS_APP_DB`

#### Repositories that need to be changed
* sonic-swss
* sonic-swss-common
* sonic-utilities
* sonic-swss-common: https://github.com/sonic-net/sonic-swss-common/pull/855
* sonic-swss: https://github.com/sonic-net/sonic-swss/pull/3047
* sonic-utilities: https://github.com/sonic-net/sonic-utilities/pull/3163
* sonic-mgmt

### SAI API
No new SAI API is being added. PortsOrch will use the existing SAI API i.e. `get_queue_stats`.

### Configuration and management
#### CLI
CLI (VOQstat.py) aggregates the VOQ stats for a VOQ across ASICS and present a consolidated view. No new CLI command is being introduced for this rather the following CLI command is leveraged to provide this output on an SSI.
CLI (queuestat.py) aggregates the VOQ stats for a VOQ across ASICS and present a consolidated view. No new CLI command is being introduced for this rather the following CLI command is leveraged to provide this output on an SSI.

$ show VOQ counters [interface] --voq
```
admin@cmp217:~$ show VOQ counters Ethernet24 --voq
Port Voq Counter/pkts Counter/bytes Drop/pkts Drop/bytes
---------- ----- -------------- --------------- ----------- ------------
Ethernet24 VOQ0 4 528 0 0
Ethernet24 VOQ1 0 0 0 0
Ethernet24 VOQ2 0 0 0 0
Ethernet24 VOQ3 0 0 0 0
Ethernet24 VOQ4 0 0 0 0
Ethernet24 VOQ5 0 0 0 0
Ethernet24 VOQ6 0 0 0 0
Ethernet24 VOQ7 0 0 0 0
admin@nfc404:~$ show queue counters "nfc404-3|Asic0|Ethernet4" --voq
Port Voq Counter/pkts Counter/bytes Drop/pkts Drop/bytes
------------------------ ----- -------------- --------------- ----------- ------------
nfc404-3|Asic0|Ethernet4 VOQ0 45 12386 0 0
nfc404-3|Asic0|Ethernet4 VOQ1 1 50 0 0
nfc404-3|Asic0|Ethernet4 VOQ2 255 12750 0 0
nfc404-3|Asic0|Ethernet4 VOQ3 0 0 0 0
nfc404-3|Asic0|Ethernet4 VOQ4 37 1850 0 0
nfc404-3|Asic0|Ethernet4 VOQ5 0 0 0 0
nfc404-3|Asic0|Ethernet4 VOQ6 172 8600 0 0
nfc404-3|Asic0|Ethernet4 VOQ7 0 0 0 0
```

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