Running on CentOS 7.5

[CrashLaker]

Hi all.

I'm trying to run this on a CentOS 7.5 system.

Downloaded and compiled version 0.09.39 but the command is failing with the following log: stress-ng --cpu 4 --io 2 --vm 1 --vm-bytes 1G --timeout 60s --metrics-brief

stress-ng: info:  [21071] disabled 'cpu-online' as it may hang or reboot the machine (enable it with the --pathological option)
stress-ng: info:  [21071] dispatching hogs: 12 aio, 12 aiol, 12 hdd, 12 rawdev, 12 readahead, 12 revio, 12 seek, 12 sync-file, 12 af-alg, 12 atomic, 12 branch, 12 bsearch, 12 context, 12 cpu, 12 crypt, 12 fp-error, 12 funccall, 12 getrandom, 12 heapsort, 12 hsearch, 12 ioport, 12 longjmp, 12 lsearch, 12 matrix, 12 mergesort, 12 nop, 12 numa, 12 opcode, 12 qsort, 12 radixsort, 12 rdrand, 12 str, 12 stream, 12 tree, 12 tsc, 12 tsearch, 12 vecmath, 12 wcs, 12 zlib
stress-ng: info:  [21073] stress-ng-aiol: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21114] stress-ng-wcs: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21118] stress-ng-aiol: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21093] stress-ng-heapsort: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21101] stress-ng-mergesort: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21138] stress-ng-heapsort: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)
stress-ng: info:  [21106] stress-ng-radixsort: this stressor is not implemented on this system: x86_64 Linux 3.10.0-862.6.3.el7.x86_64 (gcc 4.8)

[ColinIanKing]

These stressors require development libraries to be installed to enable them to work. The names of these libraries depend on the Linus distribution being used. For example, if you refer to the debian/control "Build-Depends" entry you will see the names of the libraries required to build stress-on on a Debian system. You will need the equivalent libraries installed on your system. Once these are installed, make clean and rebuild and stress-ng will be able to autodetect these in the build process.

[ColinIanKing]

Try and install the following:

• libaio-devel
• libattr-devel
• libbsd-devel
• libcap-devel
• libgcrypt-devel
• keyutils-libs
• libsctp-devel
• zlib-devel

[heena30]

hi i am a beginner to stress-ng and want to use it to stress out my linux system to test performance. I ran below:

stress-ng --aggressive

and got output as : stress-ng: error: [14365] No stress workers.

Can you please help me to understand this.

[ColinIanKing]

You also need to need to specify one or more stressors, e.g. for one cpu stressor one would use: stress-ng --cpu 1

for 1 cpu in aggressive mode: stress-ng --cpu 1 --aggressive

See the EXAMPLES section in the manual:

man stress-ng

or see https://kernel.ubuntu.com/~cking/stress-ng/stress-ng.pdf

[heena30]

Thanks colin. I have few more questions:

1. I want to test disk iops as well. How do i test?
2. If a test is successful what does it mean? i ran : stress-ng --iomix 2 --iomix-bytes 10% -t 10m -v and got output: (successful run completed in 61.30s (1 min, 1.30 secs))
3. I want to measure bulk read/write /sec. Can i measure it using this tool? (like iostat)

[vasuamb9]

Hi ColinIanKing,

I am planned to run the stress-ng methods in Ubuntu, the methods are like int8 and int16 and other methods, I have given the command like this: stress-ng --cpu-method int8

But I've seen the error like this: stress-ng: info: [1912] defaulting to a 86400 second run per stressor stress-ng: error: [1912] No stress workers invoked

So How can i overcome this on my ubuntu machine? Thanks in Advance.

-Vasu

[ColinIanKing]

Hi, run it as follows:

stress-ng --cpu 0 --cpu-method int8

specifying --cpu 0 will make it run the cpu stressor on all of your available CPUs, or you can specify the number of CPUs, for example run 2 instances in parallel:

stress-ng --cpu 2 --cpu-method int8

[vasuamb9]

Thanks ColinIanKing for your quick reply, and above command i used just now and above error is not showing now.

Thanks, -Vasu

[vasuamb9]

Hi ColinIanKing,

I requesting your help on Dynamic Frequency Scaling test, This test will perform the controlling cpu load to switch between different frequency modes of operation. Would please help me on pointing the specific file or specific function that will do this task.

Thanks in Advance. BR, Vasu.

[ajums2023]

Can someone help? I have below error when i run stress-ng command on SLE15 SP4

mymachine:~ # stress-ng stress-ng: info: [137602] defaulting to a 1 day, 0 secs run per stressor stress-ng: error: [137602] No stress workers invoked