63 lines
2.0 KiB
Python
Executable File
63 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import time
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import swsssdk
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# ALPHA defines the size of the window over which we calculate the average value. ALPHA is 2/(N+1) where N is the interval(window size)
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# In this case we configure the window to be 10s. This way if we have a huge 1s spike in traffic,
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# the average rate value will show a curve descending from the spike to the usual rate over approximately 10s.
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DEFAULT_SMOOTH_INTERVAL = '10'
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DEFAULT_ALPHA = '0.18'
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def enable_counter_group(db, name):
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info = {}
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info['FLEX_COUNTER_STATUS'] = 'enable'
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db.mod_entry("FLEX_COUNTER_TABLE", name, info)
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def enable_rates():
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# set the default interval for rates
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counters_db = swsssdk.SonicV2Connector()
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counters_db.connect('COUNTERS_DB')
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counters_db.set('COUNTERS_DB', 'RATES:PORT', 'PORT_SMOOTH_INTERVAL', DEFAULT_SMOOTH_INTERVAL)
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counters_db.set('COUNTERS_DB', 'RATES:PORT', 'PORT_ALPHA', DEFAULT_ALPHA)
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counters_db.set('COUNTERS_DB', 'RATES:RIF', 'RIF_SMOOTH_INTERVAL', DEFAULT_SMOOTH_INTERVAL)
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counters_db.set('COUNTERS_DB', 'RATES:RIF', 'RIF_ALPHA', DEFAULT_ALPHA)
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def enable_counters():
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db = swsssdk.ConfigDBConnector()
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db.connect()
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enable_counter_group(db, 'PORT')
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enable_counter_group(db, 'RIF')
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enable_counter_group(db, 'QUEUE')
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enable_counter_group(db, 'PFCWD')
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enable_counter_group(db, 'PG_WATERMARK')
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enable_counter_group(db, 'PG_DROP')
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enable_counter_group(db, 'QUEUE_WATERMARK')
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enable_counter_group(db, 'BUFFER_POOL_WATERMARK')
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enable_counter_group(db, 'PORT_BUFFER_DROP')
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enable_rates()
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def get_uptime():
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with open('/proc/uptime') as fp:
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return float(fp.read().split(' ')[0])
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def main():
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# If the switch was just started (uptime less than 5 minutes),
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# wait for 3 minutes and enable counters
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# otherwise wait for 60 seconds and enable counters
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uptime = get_uptime()
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if uptime < 300:
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time.sleep(180)
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else:
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time.sleep(60)
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enable_counters()
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if __name__ == '__main__':
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main()
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