文章目录
团队博客: 汽车电子社区
一、概述
stressapptest是一款免费的开源软件，支持用于测试Linux系统的稳定性和可靠性。它可以利用多个CPU/Core，甚至可以访问主内存的所有部分来测试系统的稳定性，以此推断系统是否存在内存泄漏或其他性能方面的问题。
stressapptest的主要目标是发现难以重现的系统稳定性问题和其他体现在Java虚拟机、KVM Hypervisor和Hadoop集群等普通用例中的Linux系统中的性能问题。它还包括多个测试模式和选项以支持不同测试场景，比如随机测试、循环测试、全内存测试、持续测试等。
二、安装
2.1、源码编译安装
// 1.下载源码
git clone https://github.com/stressapptest/stressapptest.git
cd stressapptest
./configure
make
sudo make install
2.2、命令行安装
Ubuntu下执行如下命令进行安装：
sudo apt-get install stressapptest
2.3、安装确认
执行如下命令来确认stressapptest 是否安装成功：
stressapptest -h
lyb@ubuntu:~/learn$ stressapptest -h
Stats: SAT revision 1.0.6_autoconf, 64 bit binary
Log: buildd @ lgw01-amd64-022 on Thu Apr 5 10:28:35 UTC 2018 from open source release
Usage: ./sat(32|64) [options]
-M mbytes megabytes of ram to test
-H mbytes minimum megabytes of hugepages to require
-s seconds number of seconds to run
-m threads number of memory copy threads to run
-i threads number of memory invert threads to run
-C threads number of memory CPU stress threads to run
--findfiles find locations to do disk IO automatically
-d device add a direct write disk thread with block device (or file) 'device'
-f filename add a disk thread with tempfile 'filename'
-l logfile log output to file 'logfile'
--max_errors n exit early after finding 'n' errors
-v level verbosity (0-20), default is 8
-W Use more CPU-stressful memory copy
-A run in degraded mode on incompatible systems
-p pagesize size in bytes of memory chunks
--filesize size size of disk IO tempfiles
-n ipaddr add a network thread connecting to system at 'ipaddr'
--listen run a thread to listen for and respond to network threads.
--no_errors run without checking for ECC or other errors
--force_errors inject false errors to test error handling
--force_errors_like_crazy inject a lot of false errors to test error handling
-F don't result check each transaction
--stop_on_errors Stop after finding the first error.
--read-block-size size of block for reading (-d)
--write-block-size size of block for writing (-d). If not defined, the size of block for writing will be defined as the size of block for reading
--segment-size size of segments to split disk into (-d)
--cache-size size of disk cache (-d)
--blocks-per-segment number of blocks to read/write per segment per iteration (-d)
--read-threshold maximum time (in us) a block read should take (-d)
--write-threshold maximum time (in us) a block write should take (-d)
--random-threads number of random threads for each disk write thread (-d)
--destructive write/wipe disk partition (-d)
--monitor_mode only do ECC error polling, no stress load.
--cc_test do the cache coherency testing
--cc_inc_count number of times to increment the cacheline's member
--cc_line_count number of cache line sized datastructures to allocate for the cache coherency threads to operate
--paddr_base allocate memory starting from this address
--pause_delay delay (in seconds) between power spikes
--pause_duration duration (in seconds) of each pause
--local_numa choose memory regions associated with each CPU to be tested by that CPU
--remote_numa choose memory regions not associated with each CPU to be tested by that CPU
--interleave_size bytes size in bytes of each channel's data as interleaved between memory channels
--channel_width bits width in bits of each memory channel
--memory_channel u1,u2 defines a comma-separated list of names
for dram packages in a memory channel.
Use multiple times to define multiple channels.
lyb@ubuntu:~/learn$
三、重要参数详解
3.1、查询支持的参数
执行如下命令来确认stressapptest支持的参数：
stressapptest -h
lyb@ubuntu:~/learn$ stressapptest -h
Stats: SAT revision 1.0.6_autoconf, 64 bit binary
Log: buildd @ lgw01-amd64-022 on Thu Apr 5 10:28:35 UTC 2018 from open source release
Usage: ./sat(32|64) [options]
-M mbytes megabytes of ram to test
-H mbytes minimum megabytes of hugepages to require
-s seconds number of seconds to run
-m threads number of memory copy threads to run
-i threads number of memory invert threads to run
-C threads number of memory CPU stress threads to run
--findfiles find locations to do disk IO automatically
-d device add a direct write disk thread with block device (or file) 'device'
-f filename add a disk thread with tempfile 'filename'
-l logfile log output to file 'logfile'
--max_errors n exit early after finding 'n' errors
-v level verbosity (0-20), default is 8
-W Use more CPU-stressful memory copy
-A run in degraded mode on incompatible systems
-p pagesize size in bytes of memory chunks
--filesize size size of disk IO tempfiles
-n ipaddr add a network thread connecting to system at 'ipaddr'
--listen run a thread to listen for and respond to network threads.
--no_errors run without checking for ECC or other errors
--force_errors inject false errors to test error handling
--force_errors_like_crazy inject a lot of false errors to test error handling
-F don't result check each transaction
--stop_on_errors Stop after finding the first error.
--read-block-size size of block for reading (-d)
--write-block-size size of block for writing (-d). If not defined, the size of block for writing will be defined as the size of block for reading
--segment-size size of segments to split disk into (-d)
--cache-size size of disk cache (-d)
--blocks-per-segment number of blocks to read/write per segment per iteration (-d)
--read-threshold maximum time (in us) a block read should take (-d)
--write-threshold maximum time (in us) a block write should take (-d)
--random-threads number of random threads for each disk write thread (-d)
--destructive write/wipe disk partition (-d)
--monitor_mode only do ECC error polling, no stress load.
--cc_test do the cache coherency testing
--cc_inc_count number of times to increment the cacheline's member
--cc_line_count number of cache line sized datastructures to allocate for the cache coherency threads to operate
--paddr_base allocate memory starting from this address
--pause_delay delay (in seconds) between power spikes
--pause_duration duration (in seconds) of each pause
--local_numa choose memory regions associated with each CPU to be tested by that CPU
--remote_numa choose memory regions not associated with each CPU to be tested by that CPU
--interleave_size bytes size in bytes of each channel's data as interleaved between memory channels
--channel_width bits width in bits of each memory channel
--memory_channel u1,u2 defines a comma-separated list of names
for dram packages in a memory channel.
Use multiple times to define multiple channels.
lyb@ubuntu:~/learn$
3.2、参数说明
选项说明：
-s或–timeout: 指定测试运行的总时间，以秒为单位。默认值为0（无限制）。
-M或–vm-bytes: 指定应用程序所需的内存量，以字节、千字节、兆字节或吉字节为单位。例如，“-M 2048m”表示分配2GB的内存。默认值为0（自动计算）。
-m或–vm-pattern: 指定要使用的内存模式，如线性、随机、步进等。默认值为“linear”（线性）。
-c或–cpu-cores: 指定要使用的CPU核心数。例如，“-c 4”将在四个核心上运行测试。默认值为0（使用所有可用核心）。
–affinity: 将应用程序绑定到指定的CPU核心上，以避免跨核心调度带来的额外开销。例如，“–affinity 0,2,4”将绑定应用程序到第1、3和5个CPU核心上。
–matrix: 启用矩阵测试模式，该模式可以对整个系统进行更全面的测试，并且需要更长时间才能完成。
–quiet: 禁止输出详细信息和统计数据，只显示结果摘要信息。
–log-level: 设置日志级别，以控制输出详细程度。可选值为”debug”、”info”、”warning”、”error”和”critical”。
–log-file: 将日志输出到指定的文件中，而不是标准输出。
–version: 显示stressapptest版本信息并退出。
四、实例
4.1、随机测试（默认模式）
随机模式是stressapptest的默认模式，它会随机访问系统内存中的所有部分来测试系统的稳定性。可以通过以下命令启动：
stressapptest
4.2、循环测试
循环模式是stressapptest的另一种模式，它会在指定的时间内不断迭代相同的内存模式。可以使用以下命令启动：
stressapptest -M 100 -s 128 -C 16 -c 8
4.2、全内存测试
全内存模式会尝试占用所有可用的空闲内存。可以使用以下命令启动：