I am experiencing performance issues or request rate errors

Reviewed on October 13, 2026

This page helps you diagnose performance issues and request rate errors with Scaleway Object Storage. For guidance on tuning your deployment, see the documentation on optimizing your Object Storage performance.

Before you start

To complete the following actions, you must have:

Owner status or IAM permissions allowing you to perform actions in the intended Organization

I am experiencing performance issues

You notice decreased throughput, timeouts, high latency, and overall instability on your Scaleway Object Storage deployment.

Solution

Go to the Status page (External link) to see if there is an ongoing incident on the Scaleway infrastructure.
Retrieve the logs of your buckets using any Amazon S3-compatible tool to identify the cause of the problem:
Apply the hardware and software recommendations for Object Storage, such as using multipart uploads for large objects.

I get request rate errors

An error message similar to one of the following is displayed:

Error: S3 error: Too Many Requests
Code: Too Many Requests
Shared memory connection was closed.
Agent failed to process method {DataTransfer.SyncDisk}.

Cause

Scaleway Object Storage applies a rate limit on PUT operations for safety reasons.

Note

The Shared memory connection was closed. and Agent failed to process method {DataTransfer.SyncDisk}. messages can also indicate an access issue. If the solution below does not solve the issue, see the documentation on access troubleshooting.

Solution

Reduce the number of PUT operations sent by your deployment.

Note

You may experience reduced throughput due to the limitation.

Going further

See the documentation on optimizing your Object Storage performance.
When you contact the Support team about Object Storage, include the endpoint (e.g., s3.fr-par.scw.cloud), the bucket name, and the object name if the request concerns an object.

If you still cannot solve your problem, open a support ticket, providing as many details as possible including the information below:

Resource ID
Resource name
Date and time (timestamp)
User-agent (SDK, client, console, etc.)
Transaction ID (if possible)
Log / trace of the error (if possible)
Screenshots (using our secure pastebin tool (External link))
HTTP status code (if applicable)
Request type (PUT, GET, etc., if applicable)

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