Process Management Working Group

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Process Management Working Group

• Monitoring Ideas

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Three Delivery Models

• Polling
• Streaming
• Subscription

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Polling

• One time query
• Used by tools like ps

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Polling
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Streaming

• Answers same query over-and-over
• More efficient than repeated polling
• Query sent only once
• Can use dedicated resources
• Might encode updates as deltas
• Used by tools like top

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Streaming
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Streaming
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Subscription

• Request async event notifications
• Events are similar to SNMP traps
• Value changes
• Value enters/leaves range
• Could be one-shot or until-cancelled
• Assumes persistent control connection
• Used by tools like shell wait

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Subscription
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Subscription
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Subscription