If you build a Linux VM with many vCPUs to run an intensive computation task, this tutorial will help you evaluate the performance of that VM and might suggest ways to improve that performance.
Log into VM using the credentials that were emailed when the VM was built and run an update and upgrade and then insatll glances:
sudo apt update && sudo apt upgrade -y && sudo apt install glances
Click the link below to watch a demonstration video…
The following Python code is used in the above video to stress test a VM. While the code is running on one SSH session, watch glances running on a separate SSH session:
import time
from multiprocessing import Pool, cpu_count
def is_prime(number):
if number == 2 or number == 3:
return number, True
if number % 2 == 0 or number < 2:
return number, False
for i in range(3, int(number**0.5) + 1, 2):
if number % i == 0:
return number, False
return number, True
if __name__ == '__main__':
print ("Number of CPUs: ", cpu_count())
number = int (input ("the test range required: "))
numbers = range(number)
tic = time.time()
pool = Pool(processes=cpu_count())
results = pool.map(is_prime, numbers)
toc = time.time()
# print (results)
print ("Time to Run: ", toc - tic)
iftop analyses network traffic
iotop analyses disk traffic
df -h how full are your drives
du tells you which files are filling drives
There are a number of commands that begin with ls. These commands list resources. To see which commands are installed on your VM, type ls followed by two tab characters and the full list of available ls commands will be displayed.