Virtual machine

Question

Virtual machine

Albert Liu 20

My Virtual machine is unable to restart and stop, and also the performance is 5 times lower than before.

Here is the detail of my VM

OS: Linux

OS Source Image: 0001-com-ubuntu-server-jammy

OS Source Image plan: 22_04-lts-gen2

2 cores 8G ram

Mounika Reddy Anumandla 6,845 Reputation points Microsoft External Staff Moderator

2025-02-25T04:25:21.2966667+00:00

Hi Albert Liu,

Welcome to the Microsoft Q&A Platform. Thank you for posting your query here.

Can you please provide us with the screenshot or the status of the vm at present?

And also, please let me know if you have made any recent changes?

Have you tried Restarting the VM Using CLI or PowerShell?

Did you face the similar issue before?

Meanwhile, please check if the VM was resized or moved to a different SKU accidentally and also check for throttling.

Please let me know the above details which would help me assist you better!

1 answer

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Mounika Reddy Anumandla 6,845 Reputation points Microsoft External Staff Moderator

2025-02-25T04:25:21.2966667+00:00

Hi Albert Liu,

Welcome to the Microsoft Q&A Platform. Thank you for posting your query here.

Can you please provide us with the screenshot or the status of the vm at present?

And also, please let me know if you have made any recent changes?

Have you tried Restarting the VM Using CLI or PowerShell?

Did you face the similar issue before?

Meanwhile, please check if the VM was resized or moved to a different SKU accidentally and also check for throttling.

Please let me know the above details which would help me assist you better!

Answer 1

TP 125.8K Volunteer Moderator

Hi Albert,

From your description I assume that when you browse to your VM in the Azure portal the Start or Restart buttons are disabled (grayed). Please correct me if my assumption is wrong.

If you navigate to your VM in the portal, what does it show for Status on Overview blade?

Have you tried redeploying your VM?

NOTE: If you redeploy, your VM will be restarted, data on temporary disk will be lost, and VM will be unavailable during the process.

To redeploy, navigate to your VM in portal. On left, scroll down to Help -- Redeploy + reapply blade, then click Redeploy. Wait several minutes for the process to complete, then check to see if issue has been resolved.

Please click Accept Answer and upvote if the above was helpful.

Thanks.

-TP

Albert Liu 20 Reputation points

2025-02-25T08:12:54.6133333+00:00

thanks for your help, the proformance still 5 times lower than before with same syatem and same apps after Redeployed.
TP 125.8K Reputation points Volunteer Moderator

2025-02-25T08:26:10.1033333+00:00

thanks for your help, the proformance still 5 times lower than before with same syatem and same apps after Redeployed.

What size is this VM? Is it a Burstable size? You may check the VM size by looking on the Overview blade, for example Size: Standard B2s

If it is one of the burstable VM sizes, please check to see if CPU credits remaining, OS Disk IOPS Consumed percentage, Data Disk IOPS Consumed percentage, and other relevant metrics. You may see these on Monitoring -- Metrics blade and then adding each metric to the chart from the dropdown.Has anything changed with the workload running in this VM recently?

Is the slowdown caused by high CPU utilization, high disk IO utilization, high RAM use, or multiple? You can get an idea of these by looking inside of the VM as well as the metrics.

Knowing whether the source of slowness is from CPU/Disk/RAM will help you figure out how to solve it.
TP 125.8K Reputation points Volunteer Moderator

2025-02-27T04:49:50.78+00:00
@Albert Liu Any update?

Do you have any clues as to what the source of the slowness is?

When you say it is 5 times slower, what precisely do you mean? Is there some task you are doing that now takes 5 times longer to run?

Are you seeing any heavy CPU/Disk/RAM/Network when the slowness occurs?

Thanks.

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