# 单线程 CPU 测试，默认 10 秒
sysbench cpu run

# 指定线程数和时长
sysbench cpu --threads=8 --time=60 run

# 不同素数上限测试
for prime in 1000 5000 10000 50000 100000 500000 1000000; do
  echo -n "Prime=$prime: "
  sysbench cpu --cpu-max-prime=$prime --threads=1 --time=10 run 2>&1 \
    | grep "events per second" | awk '{print $4}'
done

#!/bin/bash
# cpu_scalability.sh - CPU 多核扩展性测试

echo "线程数,Events/sec,平均延迟(ms),P95延迟(ms),加速比"
single_eps=""

for threads in 1 2 4 8 16 32 64; do
  result=$(sysbench cpu --cpu-max-prime=10000 --threads=$threads --time=30 run 2>&1)
  
  eps=$(echo "$result" | grep "events per second" | awk '{print $4}')
  avg=$(echo "$result" | grep "avg:" | awk '{print $2}')
  p95=$(echo "$result" | grep "95th" | awk '{print $3}')
  
  # 计算加速比
  if [ -z "$single_eps" ]; then
    single_eps=$eps
    speedup="1.00"
  else
    speedup=$(echo "scale=2; $eps / $single_eps" | bc)
  fi
  
  echo "$threads,$eps,$avg,$p95,$speedup"
done

#!/bin/bash
# cpu_baseline.sh - CPU 性能基线测试

echo "=== CPU 性能基线测试 ==="
echo "时间: $(date)"
echo "CPU: $(lscpu | grep 'Model name' | cut -d: -f2 | xargs)"
echo "核心数: $(nproc)"
echo ""

echo "--- 单核性能 ---"
sysbench cpu --cpu-max-prime=10000 --threads=1 --time=60 run 2>&1 | \
  grep -E "(events per second|avg:|95th)"

echo ""
echo "--- 满核性能 ---"
sysbench cpu --cpu-max-prime=10000 --threads=$(nproc) --time=60 run 2>&1 | \
  grep -E "(events per second|avg:|95th)"

echo ""
echo "--- 大素数计算 ---"
sysbench cpu --cpu-max-prime=100000 --threads=1 --time=60 run 2>&1 | \
  grep -E "(events per second|avg:|95th)"

#!/bin/bash
# compare_servers.sh - 多服务器 CPU 性能对比

SERVERS=("server1" "server2" "server3")

echo "服务器,单核性能(eps),满核性能(eps),核心数,加速比"

for server in "${SERVERS[@]}"; do
  single=$(ssh $server "sysbench cpu --threads=1 --time=30 run" 2>&1 | \
    grep "events per second" | awk '{print $4}')
  
  cores=$(ssh $server "nproc")
  
  multi=$(ssh $server "sysbench cpu --threads=$cores --time=30 run" 2>&1 | \
    grep "events per second" | awk '{print $4}')
  
  speedup=$(echo "scale=2; $multi / $single" | bc)
  
  echo "$server,$single,$multi,$cores,$speedup"
done

#!/bin/bash
# numa_test.sh - NUMA 架构对 CPU 性能的影响

# 查看 NUMA 拓扑
echo "=== NUMA 拓扑 ==="
numactl --hardware
echo ""

# 查看每个 NUMA 节点的 CPU
echo "=== NUMA 节点 CPU 映射 ==="
lscpu | grep "NUMA"
echo ""

# 在单个 NUMA 节点上运行
for node in 0 1; do
  echo "=== NUMA Node $node ==="
  cpus=$(numactl --hardware | grep "node $node cpus:" | cut -d: -f2 | tr ' ' ',' | sed 's/^,//')
  numactl --cpunodebind=$node --membind=$node \
    sysbench cpu --threads=8 --time=30 run 2>&1 | \
    grep "events per second"
done

# 跨 NUMA 节点运行
echo "=== 跨 NUMA 节点 ==="
numactl --interleave=all \
  sysbench cpu --threads=16 --time=30 run 2>&1 | \
  grep "events per second"

# 使用不同优化级别编译 sysbench

# -O0 (无优化)
CFLAGS="-O0" ./configure --prefix=/tmp/sysbench_O0 && make clean && make -j$(nproc) && make install
/tmp/sysbench_O0/bin/sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

# -O2 (标准优化)
CFLAGS="-O2" ./configure --prefix=/tmp/sysbench_O2 && make clean && make -j$(nproc) && make install
/tmp/sysbench_O2/bin/sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

# -O3 (高级优化)
CFLAGS="-O3" ./configure --prefix=/tmp/sysbench_O3 && make clean && make -j$(nproc) && make install
/tmp/sysbench_O3/bin/sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

# -O3 -march=native (针对本机 CPU 优化)
CFLAGS="-O3 -march=native" ./configure --prefix=/tmp/sysbench_native && make clean && make -j$(nproc) && make install
/tmp/sysbench_native/bin/sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

#!/bin/bash
# cpu_freq_test.sh - CPU 频率对性能的影响

# 查看当前频率
echo "当前 CPU 频率:"
cat /proc/cpuinfo | grep "cpu MHz" | head -1

# 设置 performance 模式（最高频率）
echo "设置 performance 模式..."
sudo cpupower frequency-set -g performance
sleep 5

echo "=== Performance 模式 ==="
sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

# 设置 powersave 模式（最低频率）
echo "设置 powersave 模式..."
sudo cpupower frequency-set -g powersave
sleep 5

echo "=== Powersave 模式 ==="
sysbench cpu --threads=1 --time=30 run 2>&1 | grep "events per second"

# 恢复默认
sudo cpupower frequency-set -g schedutil

#!/bin/bash
# cloud_cpu_compare.sh - 云服务器 CPU 性能对比

# 在不同实例上运行此脚本

echo "=== 实例信息 ==="
echo "实例类型: $(curl -s http://100.100.100.200/latest/meta-data/instance-type 2>/dev/null || echo 'Unknown')"
echo "CPU 型号: $(lscpu | grep 'Model name' | cut -d: -f2 | xargs)"
echo "CPU 核心: $(nproc)"
echo "CPU 频率: $(lscpu | grep 'CPU MHz' | cut -d: -f2 | xargs)"
echo ""

echo "=== 测试结果 ==="
for threads in 1 2 4 8 16; do
  echo -n "Threads=$threads: "
  sysbench cpu --cpu-max-prime=10000 --threads=$threads --time=30 run 2>&1 | \
    grep "events per second" | awk '{print $4, "eps"}'
done