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[enable counters] provide initial rates parameters (#5048)

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* [enable counters] provide initial rates parameters

Signed-off-by: Mykola Faryma <mykolaf@mellanox.com>

* add descriptive comment

Signed-off-by: Mykola Faryma <mykolaf@mellanox.com>

Co-authored-by: Volodymyr Samotiy <volodymyrs@nvidia.com>
This commit is contained in:
Mykola F 2020-11-18 19:33:19 +02:00 committed by GitHub
parent 2fe79c2c61
commit bbbd94f4dd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 1 deletions
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19
dockers/docker-orchagent/enable_counters.py
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@ -1,9 +1,14 @@
#!/usr/bin/env python3
import time
import swsssdk
# 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)
# In this case we configure the window to be 10s. This way if we have a huge 1s spike in traffic,
# the average rate value will show a curve descending from the spike to the usual rate over approximately 10s.
DEFAULT_SMOOTH_INTERVAL = '10'
DEFAULT_ALPHA = '0.18'
def enable_counter_group(db, name):
info = {}
@ -11,6 +16,16 @@ def enable_counter_group(db, name):
db.mod_entry("FLEX_COUNTER_TABLE", name, info)
def enable_rates():
# set the default interval for rates
counters_db = swsssdk.SonicV2Connector()
counters_db.connect('COUNTERS_DB')
counters_db.set('COUNTERS_DB', 'RATES:PORT', 'PORT_SMOOTH_INTERVAL', DEFAULT_SMOOTH_INTERVAL)
counters_db.set('COUNTERS_DB', 'RATES:PORT', 'PORT_ALPHA', DEFAULT_ALPHA)
counters_db.set('COUNTERS_DB', 'RATES:RIF', 'RIF_SMOOTH_INTERVAL', DEFAULT_SMOOTH_INTERVAL)
counters_db.set('COUNTERS_DB', 'RATES:RIF', 'RIF_ALPHA', DEFAULT_ALPHA)
def enable_counters():
db = swsssdk.ConfigDBConnector()
db.connect()
@ -22,6 +37,7 @@ def enable_counters():
enable_counter_group(db, 'QUEUE_WATERMARK')
enable_counter_group(db, 'BUFFER_POOL_WATERMARK')
enable_counter_group(db, 'PORT_BUFFER_DROP')
enable_rates()
def get_uptime():
@ -43,3 +59,4 @@ def main():
if __name__ == '__main__':
main()