[PTP] Reduce cpu usage and correct holdover time
Fixes two issues: 1. The CPU usage consumed by monitoring the kern.log file for changes in the NIC cgu status was found to be excessive. This change reverts that implementation and returns to a polling approach similar to what was already used for monitoring ptp4l and os clock statuses. This has been observed to bring main process in the notificationservice-base image down from ~60% CPU to ~8-10% CPU utilization. In the future, a preferrable implementation would be to work with device driver owners to provide support for udev events, removing the need to poll the status of devices. 2. User supplied holdover times for each service type were not being applied correctly. Updated daemon.py to set the holdover times in the service context. This also includes providing a user configurable "CONTROL_TIMEOUT" parameter to control the frequency of polling. This is a global value and affects the polling rate for all services. Test-plan: PASS: Build and install ptp-notification app and containers PASS: Observe reduced CPU usage and confirm that GNSS monitoring still works PASS: User supplied holdover times work correctly, along with polling rate Story: 2010056 Task: 46512 Task: 46513 Signed-off-by: Cole Walker <cole.walker@windriver.com> Change-Id: Ic0050cc09f5118e7f1c32aa13168084d6456437e
This commit is contained in:
parent
30f691a06b
commit
63fefca36c
@ -12,7 +12,6 @@ RUN set -ex ;\
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gcc python3-devel python3-pip \
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&& pip3 install --upgrade pip \
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&& pip3 install --user pecan \
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&& pip3 install pygtail \
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&& pip3 install oslo-config \
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&& pip3 install oslo-messaging \
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&& pip3 install WSME
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@ -48,9 +48,6 @@ PHC2SYS_TOLERANCE_HIGH = 37000001000
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PTP_V1_KEY = "ptp_notification_v1"
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# testing values
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CGU_PATH_VALID = "/sys/kernel/debug/ice/0000:18:00.0/cgu"
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SPEC_VERSION = "1.0"
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DATA_VERSION = "1.0"
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DATA_TYPE_NOTIFICATION = "notification"
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@ -1,69 +0,0 @@
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#
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# Copyright (c) 2022 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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import logging
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from pygtail import Pygtail
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from typing import List
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from abc import ABC, abstractmethod
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from trackingfunctionsdk.common.helpers import log_helper
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from trackingfunctionsdk.common.helpers.gnss_monitor import Observer
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LOG = logging.getLogger(__name__)
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log_helper.config_logger(LOG)
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class DmesgSubject(ABC):
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@abstractmethod
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def attach(self, observer: Observer) -> None:
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pass
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@abstractmethod
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def detach(self, observer: Observer) -> None:
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pass
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@abstractmethod
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def notify(self) -> None:
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pass
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class DmesgWatcher(DmesgSubject, ABC):
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_observers: List[Observer] = []
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_checklist = []
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_matched_line = ""
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def __init__(self, dmesg_log_file="/logs/kern.log"):
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self.dmesg_log_file = dmesg_log_file
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def parse_dmesg_event(self, dmesg_entry) -> None:
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for observer in self._observers:
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if observer.dmesg_values_to_check['pin'] in dmesg_entry \
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and observer.dmesg_values_to_check['pci_addr'] in dmesg_entry:
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matched_line = dmesg_entry
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self.notify(observer, matched_line)
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def run_watcher(self) -> None:
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"""
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This is intended to be run as a separate thread to follow the log file for events.
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There is currently no support in the NIC device drivers for udev events that
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would avoid polling/monitoring.
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"""
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while True:
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for line in Pygtail(self.dmesg_log_file, offset_file="./kern.offset"):
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self.parse_dmesg_event(line)
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def attach(self, observer: Observer) -> None:
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LOG.info("DmesgWatcher: Attached an observer.")
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self._observers.append(observer)
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def notify(self, observer, matched_line) -> None:
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LOG.info("DmesgWatcher: Notifying observers.")
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observer.update(self, matched_line)
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def detach(self, observer: Observer) -> None:
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self._observers.remove(observer)
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LOG.debug("Removed an observer.")
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@ -11,7 +11,6 @@ import re
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from abc import ABC, abstractmethod
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from trackingfunctionsdk.common.helpers import log_helper
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from trackingfunctionsdk.common.helpers import constants
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from trackingfunctionsdk.common.helpers.cgu_handler import CguHandler
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from trackingfunctionsdk.model.dto.gnssstate import GnssState
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@ -94,8 +93,6 @@ class GnssMonitor(Observer):
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LOG.debug("Set state GNSS to %s" % self._state)
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def get_gnss_status(self, holdover_time, freq, sync_state, event_time):
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current_time = datetime.datetime.utcnow().timestamp()
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time_in_holdover = round(current_time - event_time)
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previous_sync_state = sync_state
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max_holdover_time = (holdover_time - freq * 2)
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@ -117,12 +117,21 @@ class OsClockMonitor:
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def get_os_clock_offset(self):
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"""Get the os CLOCK_REALTIME offset"""
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ptp_device_path = "/dev/" + self.ptp_device
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offset = subprocess.check_output([constants.PHC_CTL_PATH, ptp_device_path, 'cmp']
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try:
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ptp_device_path = "/dev/" + self.ptp_device
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offset = subprocess.check_output([constants.PHC_CTL_PATH, ptp_device_path, 'cmp']
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).decode().split()[-1]
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offset = offset.strip("-ns")
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LOG.debug("PHC offset is %s" % offset)
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self.offset = offset
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offset = offset.strip("-ns")
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LOG.debug("PHC offset is %s" % offset)
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self.offset = offset
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except Exception as ex:
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# We have seen rare instances where the ptp device cannot be read but then works fine
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# on the next attempt. Setting the offset to 0 here will allow the OS clock to move to
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# holdover. If there is a real fault, it will stay in holdover and tranition to freerun
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# but if it was just a single miss, it will return to locked on the next check.
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LOG.warning("Unable to read device offset for %s due to %s" % (ptp_device_path, ex))
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LOG.warning("Check operation of %s. Defaulting offset value to 0." % ptp_device_path)
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self.offset = "0"
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def set_os_clock_state(self):
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offset_int = int(self.offset)
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@ -139,8 +148,10 @@ class OsClockMonitor:
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def os_clock_status(self, holdover_time, freq, sync_state, event_time):
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current_time = datetime.datetime.utcnow().timestamp()
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time_in_holdover = round(current_time - event_time)
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time_in_holdover = None
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previous_sync_state = sync_state
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if previous_sync_state == constants.HOLDOVER_PHC_STATE:
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time_in_holdover = round(current_time - event_time)
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max_holdover_time = (holdover_time - freq * 2)
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self.get_os_clock_offset()
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@ -153,6 +164,8 @@ class OsClockMonitor:
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self._state = constants.HOLDOVER_PHC_STATE
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elif previous_sync_state == constants.HOLDOVER_PHC_STATE and \
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time_in_holdover < max_holdover_time:
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LOG.debug("OS Clock: Time in holdover is %s Max time in holdover is %s" % (
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time_in_holdover, max_holdover_time))
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self._state = constants.HOLDOVER_PHC_STATE
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else:
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self._state = constants.FREERUN_PHC_STATE
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@ -116,11 +116,14 @@ class PtpMonitor:
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# Freerun —> Locked #
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####################################
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current_time = datetime.datetime.utcnow().timestamp()
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time_in_holdover = round(current_time - self._ptp_event_time)
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time_in_holdover = None
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previous_sync_state = self._ptp_sync_state
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if previous_sync_state == PtpState.Holdover:
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time_in_holdover = round(current_time - self._ptp_event_time)
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# max holdover time is calculated to be in a 'safety' zone
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max_holdover_time = (self.holdover_time - self.freq * 2)
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pmc, ptp4l, phc2sys, ptp4lconf = utils.check_critical_resources(self.ptp4l_service_name,
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self.phc2sys_service_name)
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# run pmc command if preconditions met
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@ -140,6 +143,8 @@ class PtpMonitor:
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sync_state = PtpState.Holdover
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elif previous_sync_state == PtpState.Holdover and time_in_holdover < \
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max_holdover_time:
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LOG.debug("PTP Status: Time in holdover is %s Max time in holdover is %s" % (
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time_in_holdover, max_holdover_time))
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sync_state = PtpState.Holdover
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else:
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sync_state = PtpState.Freerun
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@ -16,7 +16,6 @@ from trackingfunctionsdk.client.ptpeventproducer import PtpEventProducer
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from trackingfunctionsdk.common.helpers import constants
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from trackingfunctionsdk.common.helpers import ptpsync as utils
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from trackingfunctionsdk.common.helpers import log_helper
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from trackingfunctionsdk.common.helpers.dmesg_watcher import DmesgWatcher
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from trackingfunctionsdk.common.helpers.gnss_monitor import GnssMonitor
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from trackingfunctionsdk.common.helpers.os_clock_monitor import OsClockMonitor
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from trackingfunctionsdk.common.helpers.ptp_monitor import PtpMonitor
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@ -262,6 +261,9 @@ class PtpWatcherDefault:
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self.ptptracker_context[config] = PtpWatcherDefault.DEFAULT_PTPTRACKER_CONTEXT.copy()
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self.ptptracker_context[config]['sync_state'] = PtpState.Freerun
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self.ptptracker_context[config]['last_event_time'] = self.init_time
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self.ptptracker_context[config]['holdover_seconds'] = os.environ.get("PTP_HOLDOVER_SECONDS", 30)
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self.ptptracker_context[config]['poll_freq_seconds'] = os.environ.get(
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"CONTROL_TIMEOUT", 2)
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self.ptp_device_simulated = "true" == self.ptptracker_context[config].get(
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'device_simulated',
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"False")
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@ -274,6 +276,9 @@ class PtpWatcherDefault:
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self.gnsstracker_context[config] = PtpWatcherDefault.DEFAULT_GNSSTRACKER_CONTEXT.copy()
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self.gnsstracker_context[config]['sync_state'] = GnssState.Failure_Nofix
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self.gnsstracker_context[config]['last_event_time'] = self.init_time
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self.gnsstracker_context[config]['holdover_seconds'] = os.environ.get("GNSS_HOLDOVER_SECONDS", 30)
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self.gnsstracker_context[config]['poll_freq_seconds'] = os.environ.get(
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"CONTROL_TIMEOUT", 2)
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self.gnsstracker_context_lock = threading.Lock()
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LOG.debug("gnsstracker_context: %s" % self.gnsstracker_context)
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@ -282,6 +287,9 @@ class PtpWatcherDefault:
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self.osclocktracker_context = PtpWatcherDefault.DEFAULT_OS_CLOCK_TRACKER_CONTEXT.copy()
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self.osclocktracker_context['sync_state'] = OsClockState.Freerun
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self.osclocktracker_context['last_event_time'] = self.init_time
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self.osclocktracker_context['holdover_seconds'] = os.environ.get("OS_CLOCK_HOLDOVER_SECONDS", 30)
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self.osclocktracker_context['poll_freq_seconds'] = os.environ.get(
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"CONTROL_TIMEOUT", 2)
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self.osclocktracker_context_lock = threading.Lock()
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# Overall Sync Context
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@ -289,6 +297,9 @@ class PtpWatcherDefault:
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self.overalltracker_context = PtpWatcherDefault.DEFAULT_OVERALL_SYNC_TRACKER_CONTEXT.copy()
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self.overalltracker_context['sync_state'] = OverallClockState.Freerun
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self.overalltracker_context['last_event_time'] = self.init_time
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self.overalltracker_context['holdover_seconds'] = os.environ.get("OVERALL_HOLDOVER_SECONDS", 30)
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self.overalltracker_context['poll_freq_seconds'] = os.environ.get(
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"CONTROL_TIMEOUT", 2)
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self.overalltracker_context_lock = threading.Lock()
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self.event_timeout = float(os.environ.get('CONTROL_TIMEOUT', 2))
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@ -315,12 +326,7 @@ class PtpWatcherDefault:
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# Main loop in run() sets it to false after the first iteration
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self.forced_publishing = True
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self.watcher = DmesgWatcher()
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self.observer_list = [GnssMonitor(i) for i in self.daemon_context['GNSS_CONFIGS']]
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for observer in self.observer_list:
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self.watcher.attach(observer)
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self.watcher_thread = threading.Thread(target=self.watcher.run_watcher)
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# Setup OS Clock monitor
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self.os_clock_monitor = OsClockMonitor(phc2sys_config=self.daemon_context['PHC2SYS_CONFIG'])
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@ -343,9 +349,6 @@ class PtpWatcherDefault:
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# start location listener
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self.__start_listener()
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# start GNSS monitoring
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self.watcher_thread.start()
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while True:
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# announce the location
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forced = self.forced_publishing
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@ -398,7 +401,9 @@ class PtpWatcherDefault:
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new_event_time = last_event_time
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previous_sync_state = sync_state
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current_time = datetime.datetime.utcnow().timestamp()
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time_in_holdover = round(current_time - last_event_time)
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time_in_holdover = None
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if previous_sync_state == constants.HOLDOVER_PHC_STATE:
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time_in_holdover = round(current_time - last_event_time)
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max_holdover_time = (holdover_time - freq * 2)
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gnss_state = None
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os_clock_state = None
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@ -434,6 +439,8 @@ class PtpWatcherDefault:
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sync_state = OverallClockState.Holdover
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elif previous_sync_state == constants.HOLDOVER_PHC_STATE and \
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time_in_holdover < max_holdover_time:
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LOG.debug("Overall sync: Time in holdover is %s Max time in holdover is %s" % (
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time_in_holdover, max_holdover_time))
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sync_state = OverallClockState.Holdover
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else:
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sync_state = OverallClockState.Freerun
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@ -1,56 +0,0 @@
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#
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# Copyright (c) 2022 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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import unittest
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import os
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from unittest.mock import MagicMock
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from trackingfunctionsdk.common.helpers.dmesg_watcher import DmesgWatcher
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from trackingfunctionsdk.common.helpers.gnss_monitor import GnssMonitor
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testpath = os.environ.get("TESTPATH", "")
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class DmesgWatcherTests(unittest.TestCase):
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testDmesgWatcher = DmesgWatcher()
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observer_a = GnssMonitor(testpath + "./test_input_files/ts2phc_valid.conf",
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"tty_GNSS_1800_0", "0000:18:00.0",
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testpath + "./test_input_files/mock_cgu_output")
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observer_b = GnssMonitor(testpath + "./test_input_files/ts2phc_valid.conf",
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"tty_GNSS_1a00_0", "0000:1a:00.0",
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testpath + "./test_input_files/mock_cgu_output")
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def test_parse_dmesg_event(self):
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self.testDmesgWatcher.attach(self.observer_a)
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self.testDmesgWatcher.notify = MagicMock()
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with open(testpath + "./test_input_files/mock_kern.log", 'r') as dmesg:
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for line in dmesg:
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self.testDmesgWatcher.parse_dmesg_event(line)
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assert self.testDmesgWatcher.notify.called
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# Test that notify is not called when there is no match
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self.testDmesgWatcher.notify.reset_mock()
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self.testDmesgWatcher.attach(self.observer_b)
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with open(testpath + "./test_input_files/mock_kern.log", 'r') as dmesg:
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for line in dmesg:
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self.testDmesgWatcher.parse_dmesg_event(line)
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assert self.testDmesgWatcher.notify.assert_not_called
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def test_attach_detach(self):
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self.testDmesgWatcher.attach(self.observer_a)
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self.testDmesgWatcher.attach(self.observer_b)
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self.assertEqual(len(self.testDmesgWatcher._observers), 2)
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self.testDmesgWatcher.detach(self.observer_a)
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self.testDmesgWatcher.detach(self.observer_b)
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self.assertEqual(len(self.testDmesgWatcher._observers), 0)
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def test_notify(self):
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self.observer_a.update = MagicMock
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self.testDmesgWatcher.notify(observer=self.observer_a,
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matched_line="2022-06-03T19:50:05.959 controller-0 kernel: warning [ "
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"4.635511] ice 0000:18:00.0: <DPLL1> state changed to: "
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"locked_ho_ack, pin GNSS-1PPS")
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assert self.observer_a.update.called
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@ -7,4 +7,3 @@ WebOb~=1.8.7
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requests~=2.27.1
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mock
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PyYAML
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pygtail~=0.12.0
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@ -44,16 +44,9 @@ NOTIFICATION_TRANSPORT_ENDPOINT = 'rabbit://{0}:{1}@[{2}]:{3}'.format(
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PTP_DEVICE_SIMULATED = os.environ.get("PTP_DEVICE_SIMULATED", True)
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PTP_HOLDOVER_SECONDS = os.environ.get("PTP_HOLDOVER_SECONDS", 30)
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PTP_POLL_FREQ_SECONDS = os.environ.get("PTP_POLL_FREQ_SECONDS", 2)
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GNSS_HOLDOVER_SECONDS = os.environ.get("GNSS_HOLDOVER_SECONDS", 30)
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GNSS_POLL_FREQ_SECONDS = os.environ.get("GNSS_POLL_FREQ_SECONDS", 2)
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OS_CLOCK_HOLDOVER_SECONDS = os.environ.get("OS_CLOCK_HOLDOVER_SECONDS", 30)
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OS_CLOCK_POLL_FREQ_SECONDS = os.environ.get("OS_CLOCK_POLL_FREQ_SECONDS", 2)
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OVERALL_HOLDOVER_SECONDS = os.environ.get("OVERALL_HOLDOVER_SECONDS", 30)
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OVERALL_POLL_FREQ_SECONDS = os.environ.get("OVERALL_POLL_FREQ_SECONDS", 2)
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PHC2SYS_CONFIG = None
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PHC2SYS_SERVICE_NAME = None
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@ -111,20 +104,16 @@ context = {
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'ptptracker_context': {
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'device_simulated': PTP_DEVICE_SIMULATED,
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'holdover_seconds': PTP_HOLDOVER_SECONDS,
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'poll_freq_seconds': PTP_POLL_FREQ_SECONDS
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'holdover_seconds': PTP_HOLDOVER_SECONDS
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},
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'gnsstracker_context': {
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'holdover_seconds': GNSS_HOLDOVER_SECONDS,
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'poll_freq_seconds': GNSS_POLL_FREQ_SECONDS
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'holdover_seconds': GNSS_HOLDOVER_SECONDS
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},
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'osclocktracker_context': {
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'holdover_seconds': OS_CLOCK_HOLDOVER_SECONDS,
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'poll_freq_seconds': OS_CLOCK_POLL_FREQ_SECONDS
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'holdover_seconds': OS_CLOCK_HOLDOVER_SECONDS
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},
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'overalltracker_context': {
|
||||
'holdover_seconds': OVERALL_HOLDOVER_SECONDS,
|
||||
'poll_freq_seconds': OVERALL_POLL_FREQ_SECONDS
|
||||
'holdover_seconds': OVERALL_HOLDOVER_SECONDS
|
||||
}
|
||||
}
|
||||
|
||||
@ -140,8 +129,6 @@ sqlalchemy_conf_json = json.dumps(sqlalchemy_conf)
|
||||
default_daemoncontrol = DaemonControl(sqlalchemy_conf_json, json.dumps(context))
|
||||
|
||||
default_daemoncontrol.refresh()
|
||||
while True:
|
||||
pass
|
||||
|
||||
|
||||
|
||||
|
@ -111,20 +111,10 @@ spec:
|
||||
value: "{{ .Values.ptptracking.device.simulated }}"
|
||||
- name: PTP_HOLDOVER_SECONDS
|
||||
value: "{{ .Values.ptptracking.device.holdover_seconds }}"
|
||||
- name: PTP_POLL_FREQ_SECONDS
|
||||
value: "{{ .Values.ptptracking.device.poll_freq_seconds }}"
|
||||
- name: GNSS_HOLDOVER_SECONDS
|
||||
value: "{{ .Values.ptptracking.gnss.holdover_seconds }}"
|
||||
- name: GNSS_POLL_FREQ_SECONDS
|
||||
value: "{{ .Values.ptptracking.gnss.poll_freq_seconds }}"
|
||||
- name: OS_CLOCK_HOLDOVER_SECONDS
|
||||
value: "{{ .Values.ptptracking.osclock.holdover_seconds }}"
|
||||
- name: OS_CLOCK_POLL_FREQ_SECONDS
|
||||
value: "{{ .Values.ptptracking.osclock.poll_freq_seconds }}"
|
||||
- name: OVERALL_HOLDOVER_SECONDS
|
||||
value: "{{ .Values.ptptracking.overall.holdover_seconds }}"
|
||||
- name: OVERALL_POLL_FREQ_SECONDS
|
||||
value: "{{ .Values.ptptracking.overall.poll_freq_seconds }}"
|
||||
- name: NOTIFICATIONSERVICE_USER
|
||||
value: "admin"
|
||||
- name: NOTIFICATIONSERVICE_PASS
|
||||
@ -149,6 +139,8 @@ spec:
|
||||
value: "{{ .Values.ptptracking.ts2phcServiceName }}"
|
||||
- name: LOGGING_LEVEL
|
||||
value: "{{ .Values.ptptracking.log_level }}"
|
||||
- name: CONTROL_TIMEOUT
|
||||
value: "{{ .Values.ptptracking.control_timeout }}"
|
||||
command: ["python3", "/mnt/ptptracking_start.py"]
|
||||
securityContext:
|
||||
privileged: true
|
||||
|
@ -75,16 +75,12 @@ ptptracking:
|
||||
repository: starlingx/notificationservice-base
|
||||
tag: stx.7.0-v1.0.5
|
||||
pullPolicy: IfNotPresent
|
||||
control_timeout: 2
|
||||
device:
|
||||
simulated: false
|
||||
holdover_seconds: 15
|
||||
poll_freq_seconds: 2
|
||||
gnss:
|
||||
holdover_seconds: 15
|
||||
poll_freq_seconds: 2
|
||||
osclock:
|
||||
holdover_seconds: 15
|
||||
poll_freq_seconds: 2
|
||||
overall:
|
||||
holdover_seconds: 15
|
||||
poll_freq_seconds: 2
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user