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#!/bin/bash
# Copyright 2009, The Android Open Source Project
#
# 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.
# Run a bunch of test on the sdcard to establish a performance profile.
print_kernel() {
adb shell cat /proc/version
}
print_sched_features() {
adb shell cat /sys/kernel/debug/sched_features
}
# Use dd to get the raw speed of the card
block_level() {
true
}
# Time to run a test vs number of processes
scalability() {
local file="/tmp/sdcard-scalability.txt"
rm -f ${file}
echo "# Scalability tests" | tee -a ${file}
echo "# Kernel: $(print_kernel)" | tee -a ${file}
echo "# Sched features: $(print_sched_features)" | tee -a ${file}
echo "# StopWatch scalability total/cumulative duration 0.0 Samples: 1" | tee -a ${file}
echo "# Process Time" | tee -a ${file}
for p in $(seq 1 8); do
adb shell sdcard_perf_test --test=write --procnb=${p} --size=1000 --chunk-size=100 --iterations=50 >/tmp/tmp-sdcard.txt
local t=$(grep 'write_total' /tmp/tmp-sdcard.txt | tail -n 1 | cut -f 6 -d ' ')
echo "$p $t" | tee -a ${file}
done
}
# Readers and writers should not starve each others.
fairness() {
# Check readers finished before writers.
# Find the time of the last read op.
# Count how many writes and how many read happend
# during that period, do the ratio.
true
}
#######################################################################
# MAIN
echo "Make sure debugfs is mounted on the device."
block_level
scalability
fairness
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