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-rw-r--r--VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py74
1 files changed, 74 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py
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+++ b/VNFs/DPPD-PROX/helper-scripts/demo-scripts/tx_rate.py
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+#!/bin/env python2.7
+
+##
+## Copyright (c) 2010-2017 Intel Corporation
+##
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+##
+## http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+##
+
+from prox import *
+from decimal import *
+from time import *
+
+class data_point:
+ value = 0;
+ tsc = 0;
+ def __init__(self, value, tsc):
+ self.value = value;
+ self.tsc = tsc;
+
+def measure_tx(prox_instance, port_id):
+ port_tx_pkt = "port(" + str(port_id) + ").tx.packets"
+ port_tsc = "port(" + str(port_id) + ").tsc";
+ cmd = "stats " + port_tx_pkt + "," + port_tsc;
+ reply = prox_instance.send(cmd).recv().split(",");
+
+ return data_point(int(reply[0]), int(reply[1]));
+
+def get_rate(first, second, hz):
+ tsc_diff = second.tsc - first.tsc;
+ value_diff = second.value - first.value;
+
+ return int(Decimal(value_diff * hz) / tsc_diff)
+
+# make sure that prox has been started with the -t parameter
+prox_instance = prox("127.0.0.1")
+print "Connected to prox"
+
+hz = int(prox_instance.send("stats hz").recv());
+
+print "System is running at " + str(hz) + " Hz"
+
+print "Showing TX pps on port 0"
+
+update_interval = 0.1
+
+print "Requesting new data every " + str(update_interval) + "s"
+
+measure = measure_tx(prox_instance, 0);
+while (True):
+ sleep(update_interval)
+ measure2 = measure_tx(prox_instance, 0);
+
+ # since PROX takes measurements at a configured rate (through
+ # update interval command or throw -r command line parameter), it
+ # might be possible that two consecutive measurements report the
+ # same. To get updates at a frequency higher than 1 Hz,
+ # reconfigure prox as mentioned above.
+
+ if (measure.tsc == measure2.tsc):
+ continue;
+
+ print get_rate(measure, measure2, hz);
+
+ measure = measure2;