Improve ZeroMQ ReqServer load-balancing#67215
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jfindlay wants to merge 1 commit intosaltstack:masterfrom
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Improve ZeroMQ ReqServer load-balancing#67215jfindlay wants to merge 1 commit intosaltstack:masterfrom
jfindlay wants to merge 1 commit intosaltstack:masterfrom
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Salt currently uses a Broker socket to distribute incoming requests to MWorkers using a round-robin discipline, which doesn't take into account if the worker is already busy and will not be able to serve the request in a timely manner. This patch is based on the recommended ZMQ [load-balancing pattern](https://zguide.zeromq.org/docs/chapter3/#A-Load-Balancing-Message-Broker), which flips it to a Router socket that idle MWorkers will pull from. This resolves the SaltReqTimeout issues in testing and gets us better visibility into the utilization of workers.
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Salt currently uses a Broker socket to distribute incoming requests to MWorkers using a round-robin discipline, which doesn't take into account if the worker is already busy and will not be able to serve the request in a timely manner. This patch is based on the recommended ZMQ load-balancing pattern, which flips it to a Router socket that idle MWorkers will pull from. This resolves the SaltReqTimeout issues in testing and gets us better visibility into the utilization of workers.
What does this PR do?
What issues does this PR fix or reference?
Fixes
Previous Behavior
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New Behavior
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[NOTICE] Bug fixes or features added to Salt require tests.
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