Maintenance Windows for Sauce Labs

Our EU Central data center (RDC) will undergo unplanned but necessary power maintenance on June 19th, 2025, between 07:00 and 18:00 CEST (05:00–16:00 UTC). During this maintenance window, devices may experience brief service interruptions lasting up to 20–30 minutes. We are taking every measure to minimize impact and ensure full service restoration as quickly as possible. We appreciate your understanding and apologize for any inconvenience this may cause.

2021-March-8 Service Incident

Incident Report for Sauce Labs

Postmortem

Dates:

Monday, March 8, 18:39 - 23:30 UTC

What happened:

We were seeing elevated wait times for automated and manual MacOS tests in our US-West-1 data center. Customers may have seen MacOS and iOS Simulator tests taking a long time to start, or failing to start. Windows, Linux and Android tests were unaffected.

Why it happened:

Due to high sustained peak usage combined with intensive CPU operations from a customer application our Mac Cloud CPU performance became degraded.

How we fixed it:

Additional data center caching servers were deployed to improve performance and distribution of application storage. We also implemented throttling of targeted jobs to reduce the CPU load on our US-West Mac Cloud.

What we are doing to prevent it from happening again:

In the future more aggressive throttling will be implemented on a per customer basis to keep the performance of our services within established baselines. A Sev1 issue will be opened with affected customers to work with them to resolve the issue specific to their usage.

Posted Mar 16, 2021 - 11:11 UTC

Resolved

This incident has been resolved. All services are fully operational.

Posted Mar 09, 2021 - 13:25 UTC

Monitoring

Wait times have returned to normal levels. We are continuing to monitor the situation.

Posted Mar 09, 2021 - 11:55 UTC

Update

Wait times continue to be elevated for automated and manual MacOS and iOS Simulator tests in our US-West-1 Data Center. We are still investigating.

Posted Mar 09, 2021 - 09:15 UTC

Update

We are seeing elevated wait times for automated and manual MacOS tests, including iOS Simulators, in the US-West Data Centre only. Customers may see tests taking a long time to start, or failing to start. Windows, Linux and Android tests are unaffected. We are investigating.

Posted Mar 09, 2021 - 07:16 UTC

Investigating

We are seeing elevated wait times for automated and manual MacOS tests, including iOS Simulators. Customers may see tests taking a long time to start, or failing to start. Windows, Linux and Android tests are unaffected. We are investigating.

Posted Mar 09, 2021 - 07:15 UTC

This incident affected: Automated Browser Testing (US-West), Automated Virtual Mobile Device Testing (US-West), and Live Virtual Mobile Device Testing (US-West).