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				|  |  | +#!/usr/bin/env bash
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				|  |  | +# Copyright 2017 gRPC authors.
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				|  |  | +#
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				|  |  | +# Licensed under the Apache License, Version 2.0 (the "License");
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				|  |  | +# you may not use this file except in compliance with the License.
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				|  |  | +# You may obtain a copy of the License at
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				|  |  | +#
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				|  |  | +#     http://www.apache.org/licenses/LICENSE-2.0
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				|  |  | +#
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				|  |  | +# Unless required by applicable law or agreed to in writing, software
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				|  |  | +# distributed under the License is distributed on an "AS IS" BASIS,
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				|  |  | +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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				|  |  | +# See the License for the specific language governing permissions and
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				|  |  | +# limitations under the License.
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				|  |  | +#
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				|  |  | +# This script is invoked by Jenkins and runs a diff on the microbenchmarks
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				|  |  | +set -ex
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				|  |  | +
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				|  |  | +# List of benchmarks that provide good signal for analyzing performance changes in pull requests
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				|  |  | +BENCHMARKS_TO_RUN="cli_transport_stalls_per_iteration cli_stream_stalls_per_iteration svr_transport_stalls_per_iteration svr_stream_stalls_per_iteration"
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				|  |  | +
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				|  |  | +# Enter the gRPC repo root
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				|  |  | +cd $(dirname $0)/../../..
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				|  |  | +
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				|  |  | +source tools/internal_ci/helper_scripts/prepare_build_linux_perf_rc
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				|  |  | +
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				|  |  | +tools/run_tests/start_port_server.py
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				|  |  | +tools/jenkins/run_c_cpp_test.sh tools/profiling/microbenchmarks/bm_diff/bm_main.py \
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				|  |  | +  -d origin/$ghprbTargetBranch \
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				|  |  | +  -b bm_fullstack_trickle \
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				|  |  | +  -l 4 \
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				|  |  | +  -t $BENCHMARKS_TO_RUN \
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				|  |  | +  --no-counters \
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				|  |  | +  --pr_comment_name trickle || FAILED="true"
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				|  |  | +
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				|  |  | +# kill port_server.py to prevent the build from hanging
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				|  |  | +ps aux | grep port_server\\.py | awk '{print $2}' | xargs kill -9
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				|  |  | +
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				|  |  | +if [ "$FAILED" != "" ]
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				|  |  | +then
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				|  |  | +  exit 1
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				|  |  | +fi
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