[action] [PR:23139] pmon docker - Enable config of thermalctd polling interval#26422
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mssonicbld merged 1 commit intosonic-net:202505from Mar 26, 2026
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Platforms can now configure thermal monitor intervals in their pmon_daemon_control.json:
```
# example
{
"thermalctld": {
"thermal_monitor_initial_interval": 5,
"thermal_monitor_update_interval": 30,
"thermal_monitor_update_elapsed_threshold": 25
}
}
```
Note this only affects the `ThermalMonitor` thread in the `thermalctld` daemon.
`ThermalMonitor`'s role is to poll fan and temperature sensors from hardware and publish information to redis.
This redis values are used in `show platform temperature` and `show platform fan` for example.
Parameter Details
`thermal_monitor_initial_interval`
- Purpose: The initial time to wait before the first poll by `ThermalMonitor` on `thermalctld` startup.
- Default: 5 seconds
`thermal_monitor_update_interval`
- Purpose: Every `thermal_monitor_update_interval` seconds, the hardware is polled
- Default: 60 seconds
`thermal_monitor_update_elapsed_threshold`
- Purpose: If it takes longer than `thermal_monitor_update_elapsed_threshold` seconds to poll hardware (collected information from all fans and temperature sensors), a warning is logged.
- Default: 30 seconds
#### Why I did it
The default polling interval of 60s is quite high and feels unresponsive (i.e. an operator can remove a fan and wait nearly a minute for `show plat fan` to update).
#### How I did it
In sonic-net/sonic-platform-daemons#635 we made these intervals configurable.
This PR updates the jinja template to handle these new configuration options.
It decreases the update interval from 60s -> 10s for NH-4010. I'm aiming for a balance of responsiveness without polling excessively.
Example usage of these feature:
https://github.com/nexthop-ai/private-sonic-buildimage/blob/master/device/nexthop/common/pmon_daemon_control.json
#### How to verify it
Verified on NH-4010 that `thermalctld` is being run with the expected options.
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#### Which release branch to backport (provide reason below if selected)
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- [ ] 202205
- [ ] 202211
- [ ] 202305
- [ ] 202311
- [ ] 202405
- [ ] 202411
- [ ] 202505
#### Tested branch (Please provide the tested image version)
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#### Link to config_db schema for YANG module changes
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Signed-off-by: Sonic Build Admin <sonicbld@microsoft.com>
#### A picture of a cute animal (not mandatory but encouraged)
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Original PR: #23139 |
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Platforms can now configure thermal monitor intervals in their pmon_daemon_control.json:
Note this only affects the
ThermalMonitorthread in thethermalctlddaemon.ThermalMonitor's role is to poll fan and temperature sensors from hardware and publish information to redis.This redis values are used in
show platform temperatureandshow platform fanfor example.Parameter Details
thermal_monitor_initial_intervalThermalMonitoronthermalctldstartup.thermal_monitor_update_intervalthermal_monitor_update_intervalseconds, the hardware is polledthermal_monitor_update_elapsed_thresholdthermal_monitor_update_elapsed_thresholdseconds to poll hardware (collected information from all fans and temperature sensors), a warning is logged.Why I did it
The default polling interval of 60s is quite high and feels unresponsive (i.e. an operator can remove a fan and wait nearly a minute for
show plat fanto update).How I did it
In sonic-net/sonic-platform-daemons#635 we made these intervals configurable.
This PR updates the jinja template to handle these new configuration options.
It decreases the update interval from 60s -> 10s for NH-4010. I'm aiming for a balance of responsiveness without polling excessively.
Example usage of these feature:
https://github.com/nexthop-ai/private-sonic-buildimage/blob/master/device/nexthop/common/pmon_daemon_control.json
How to verify it
Verified on NH-4010 that
thermalctldis being run with the expected options.Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
Description for the changelog
Link to config_db schema for YANG module changes
Signed-off-by: Sonic Build Admin sonicbld@microsoft.com
A picture of a cute animal (not mandatory but encouraged)