High Server latency on Storage Account

Question

We've recently started experiencing high Server Latency on one of our Storage accounts

On the attached screenshot you can see the server latency increases significantly over the last few working days. We can't identify anything running that is causing this though it does only appear to be occurring during business hours. 

Answer 1

Our problem seems to be Server-side latency rather than E2E latency.

We have done a large number of Windows 24H2 updates last week and not sure if that's related.

Answer 2

Hi Paul,

Thanks for reaching out to Microsoft Q&A.

Latency can be from Storage account or Client Application. To isolate this issue, I advise you to follow below guide

https://techcommunity.microsoft.com/blog/azurepaasblog/how-to-isolate-latency-issue-for-azure-storage-account/1430656

Also, please follow this document to identify factors influencing latency and how to improve performance - https://learn.microsoft.com/en-us/azure/storage/blobs/storage-blobs-latency

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

Answer 3

Hi @Paul Flynn,

Greetings! Welcome to Microsoft Q&A Forum and thanks for posting your query here!

There are some possible reasons for the client responding slowly include having limited available connections or threads or being low on resources such as CPU, memory, or network bandwidth. You may be able to resolve the issue by modifying the client code to be more efficient (for example, by using asynchronous calls to the storage service) or by using a larger Virtual Machine with more cores and more memory.

Check for the storage logs to see if there are repeated requests for the same blob or set of blobs. This could indicate that multiple clients are trying to access the same resources simultaneously.

For more additional information, please refer the link: Troubleshoot performance in Azure storage accounts.

We are glad to see that your issue has been resolved. If could post your solution here in comments, it would be more helpful for other forum community members as well.

Please let us know if you have any further queries. I’m happy to assist you further.

Please do consider to “up-vote” wherever the information provided helps you, this can be beneficial to other community members.