#!/bin/bash
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usage()
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{
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echo "Usage: npu_freq_scaling.sh [test_second] [every_freq_stay_second]"
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echo "example: npu_freq_test.sh 3600 30"
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echo "means npu_freq_test.sh will run 1 hour and every cpu frequency stay 30s"
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}
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echo "test will run $1 seconds"
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echo "every npu frqeucny will stay $2 seconds"
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NPU_PATH=/sys/devices/platform/*.npu/devfreq/*.npu
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unset FREQS
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read -a FREQS < $NPU_PATH/available_frequencies
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RANDOM=$$$(date +%s)
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time_cnt=0
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while true; do
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if [ $time_cnt -ge $1 ]
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then
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echo "======TEST SUCCESSFUL, QUIT====="
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exit 0
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fi
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echo userspace > $NPU_PATH/governor
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FREQ=${FREQS[$RANDOM % ${#FREQS[@]} ]}
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echo "set ddr frequency to $FREQ"
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echo ${FREQ} > $NPU_PATH/userspace/set_freq
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sleep $2
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let "time_cnt=$time_cnt+$2"
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done
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