Hello all, just a followup to inform you that this work has been postponed a week:

* webservice default memory limits from 256MB to 128MB on Wed May 13th starting at 8 UTC * and from 128MB to 64MB on Wed May 20th starting at 8 UTC

best, Filippo

On Tue, Apr 28, 2026 at 2:35 PM Filippo Giunchedi fgiunchedi@wikimedia.org wrote:

Hello all, in order to optimize Toolforge resources utilization we will be progressively changing the default memory requests for webservice tools from 256MB to 64MB. Memory and CPU requests are scheduler hints for Kubernetes on how to allocate tools to worker nodes; the default memory limit (i.e. enforced maximum memory usage) stays unchanged at 512MB. There is no expected impact to tools using more memory than they request.

The first phase will involve changing requests from 256MB to 128MB on Wed May 6th starting at 8 UTC, and from 128MB to 64MB on Tue May 12th starting at 8 UTC. We will be restarting webservice tools as part of the deployment and no action is required on tool maintainers' part.

The details of this work can be found at https://phabricator.wikimedia.org/T420565

best, Filippo -- *Filippo Giunchedi* Staff Site Reliability Engineer Wikimedia Foundation https://wikimediafoundation.org/