#查看内存信息
dmidecode -t memory
dmidecode -t 16
sudo dmidecode -t 17 | awk -F': ' '
BEGIN { 
    printf "%-5s %-15s %-20s %-25s %-10s\n", "Line", "Locator", "Serial", "Size-Type-Speed", "Part Number";
}
/Size:/ { size = $2 }
/Bank Locator:/ { locator = $2 }
/Type:/ { type = $2 }
/Configured Memory Speed:/ { speed = $2 }
/Serial Number:/ { serial = $2 }
/Part Number:/ { part = $2 }
/Firmware Version:/ {
    combined = size "-" type "-" speed; 
    printf "%-5d %-15s %-20s %-25s %-10s\n", line++, locator, serial, combined, part;
}'
lsmem
free -h

#stream 测试	http://www.streambench.org/
curl -OL http://www.cs.virginia.edu/stream/FTP/Code/stream.c
#cleancache
echo 3 > /proc/sys/vm/drop_caches 
#编译
gcc -fopenmp \  #适应多处理器环境；开启后，程序默认线程为CPU线程数
-mtune=native -march=native \   #GCC针对CPU指令的优化，arm版需要取消
-O3 \   #编译器编译优化级别
-DSTREAM_ARRAY_SIZE=`lscpu | awk '/L3 /{size=$3; unit=$4; if (unit == "MiB") size *= 1024 * 1024; print size}'` \  #指定计算中a[],b[],c[] 数组的大小,5.10版默认10,000,000,最高级缓存小于9.5M不用考虑修改 期望>最高级缓存X*4*CPU路数/8,通常根据cpu三级缓存L3设置最高级缓存X
-DNTIMES=100 \  #执行的次数，并且从这些结果中选最优值,调大可以获取较高的值
-DOFFSET=4096 \  #数组的偏移，一般可以不定义。
-mcmodel=medium \   #解除最大内存的限制,当单个Memory Array Size 大于2GB时需要设置此参数
stream.c -o stream
#让数组变成“自动变量” 避免偏移 >2 GB 报错
gcc -fopenmp -O3 -march=native -mtune=native \
    -DNTIMES=100 \
    -DSTREAM_ARRAY_SIZE=$(lscpu | awk '/L3/{
        sz=$3; u=$4; if(u=="MiB")sz=sz*1024*1024; else if(u=="KiB")sz=sz*1024;
        print int(sz/8/3) }') \
    -DOFFSET=0 -DSTATIC= stream.c -o stream
#绑核
export GOMP_CPU_AFFINITY=0-127
#多线程	
#export OMP_NUM_THREADS=$(lscpu | awk '/CPU\(s\):/{printf("%d\n",$2)}' | grep -v 0)
./stream
#单线程
export OMP_NUM_THREADS=1
./stream


#三次取值
echo "" > stream.out
for i in {1..3}
do
echo 3 > /proc/sys/vm/drop_caches 
export OMP_NUM_THREADS=$(lscpu | awk '/CPU\(s\):/{printf("%d\n",$2)}' | grep -v 0)
./stream >> stream.out
done
for i in {1..3}
do
echo 3 > /proc/sys/vm/drop_caches 
export OMP_NUM_THREADS=1
./stream >> stream.out
done
#格式化结果
cat stream.out | grep -E "Copy:|Scale:|Add:|Triad:" | awk '/:/{gsub(/:/,"",$1); print $1","$2","$3","$4","$5}' > stream_results.csv

#stress
yum install -y epel-release
yum install stress -y
apt-get install stress
tar -zxvf /mnt/stress-1.0.4.tar.gz
./configure
make
make install
stress
#新增4个IO进程，50个虚机，每次分配大小5G，分配后挂起100s，测试43200S
stress -i 4 --vm 50 --vm-bytes 5G --vm-hang 100 --timeout 43200s
#以剩余内存分配8Gvm若干，压力测试12小时
date && stress -m $(free -g | awk '/Mem/{printf("%.0f\n",$4/8)}') --vm-bytes 8G --vm-hang 5 -t 43200s

#memtester 稳定性测试	官网	http://pyropus.ca/software/memtester/
curl -Ol http://pyropus.ca/software/memtester/old-versions/memtester-4.5.0.tar.gz
tar -zxf memtester-4.5.0.tar.gz
cd memtester-4.5.0
#make生成 memtester
make
#执行32G内存 执行1次
date && ./memtester 32G 1 && date
#8成内存剩余内存 执行一次
date && ./memtester $(free -m | awk '/Mem/{printf("%.0f\n",$4*0.8)}') 1  && date 

#

#####ubuntu下测试项
#lmbench 默认选择
tar -xf lmbench-3.0-a9.tgz
cd lmbench-3.0-a9
make
#运行
make results
#再次运行
make rerun
#查看结果
make see

#mbw
apt-get install -y mbw
mbw -q -n 3 4096
#-q 隐藏日志
#-n 3 运行次数 3
#4096：使用内存大小，单位MB，用剩余内存的一半进行测试
#只需关注平均值(AVG)，内存分配速率越大，性能越好，三次AVG分别对应内存拷贝，字符串拷贝，内存卡拷贝。
date && mbw -q -n 3 $(free -m | awk '/Mem/{printf("%.0f\n",$2*0.5)}') && date
nohup mbw -q -n 3 130000 >> ./mbw.log 2>&1 &
top -p mbw[pid]

#####centos下测试项
#ramspeed 测试 官网	http://alasir.com/software/ramspeed/
curl -Ol http://alasir.com/software/ramspeed/ramsmp-3.5.0.tar.gz
tar -zxf ramsmp-3.5.0.tar.gz
cd ramsmp-3.5.0
./build.sh
#运行测试
echo "----------------------内存测试 ramspeed----------------------" > ramspeed.out
echo >> ramspeed.out
echo "-- INTmark [writing] 整型写" >> ramspeed.out | ./ramsmp -b 1 >> ramspeed.out
echo "-- INTmark [reading] 整型读" >> ramspeed.out | ./ramsmp -b 2 >> ramspeed.out
echo "-- FLOATmark [writing] 浮点写" >> ramspeed.out | ./ramsmp -b 4 >> ramspeed.out
echo "-- FLOATmark [reading] 浮点读" >> ramspeed.out | ./ramsmp -b 5 >> ramspeed.out
echo finish