SLIDE 1
- Throughput
- Response time
- Packet loss rate
- Uptime
- …
Quality of Service
2 Video transcoding Security monitoring Business services
Service Providers
Ad network
Service Consumer
QoX: Quality of Service and Consumption in the Cloud Murad Kablan, - - PowerPoint PPT Presentation
QoX: Quality of Service and Consumption in the Cloud Murad Kablan, - - PowerPoint PPT Presentation
QoX: Quality of Service and Consumption in the Cloud Murad Kablan, Eric Keller , Hani Jamjoom eric.keller@colorado.edu Quality of Service Throughput Response time Video transcoding Business Packet loss rate services Uptime
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- What makes a good consumer?
– Secured – Well behaved software – Non-bursty requests – Long-time user – ...
Two Sides to Every Service
3 Video transcoding Security monitoring Business services
Service Providers
Ad network
Service Consumer
SLIDE 4
Example
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Updates 3rd party software Tests their own software Unpatched 3rd party software Quick deploy, fix bugs later Service consumer 1 Service consumer 2
SLIDE 5
Introducing Quality of Consumption
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QoC captures how well users
are consuming a service
QoX is QoS and QoC
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Using QoX
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Measure, interpret, react
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The Cloud is more than Individuals
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Many service providers and consumers (some both) interacting with each other
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Sharing QoX – better service/consumption
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Interactions
(System of Engagement) QoC Interpreter QoS Interpreter Info about service provider(s) Info about service consumer(s)
Information Exchange
Configure Configure
Service Providers Service Consumer
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Types of Information
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Interactions
(System of Engagement) QoC Interpreter QoS Interpreter Info about service provider(s) Info about service consumer(s)
Information Exchange
Configure Configure
Summary of Exchange Record of Event
Service Providers Service Consumer
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Record of Event
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Record of Event
I was attacked by consumer X Block Consumer X
Service Provider 2 Service Provider 1
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Summary of Exchange
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Interactions
(System of Engagement) QoC Interpreter QoS Interpreter Info about service provider(s) Info about service consumer(s)
Information Exchange
Configure Configure
Summary of Exchange
Service Providers Service Consumer
I interacted with Y, and the QoS was … I interacted with Z, and the QoC was …
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- Raw numbers? Not always comparable.
- Propose: scalar, subjective rating
- Subjective… not very quantitative
– But it measures if other party met expectations
Summary of Exchange: What do we share?
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- Sub-categories?
How Can it Be Interpreted?
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- Text based review
– Machine generated from logs – Unstructured text to structured data (e.g., Elastic Search)
How Can it Be Interpreted?
14 3:32 pm 4/12/15 Service downtime in past week was 10 minutes. Experienced high latencies.
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- Personalization: Highlight most relevant
– Similar use of API, similar interaction, etc. (e.g., PredictionIO)
Personalization
15 3:32 pm 4/12/15 Service downtime in past week was 10 minutes. Experienced high latencies.
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Sybils Lying
Attacks (positive or negative)
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SLIDE 17
Sybils
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…
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- For Summary of Exchange – becomes in the noise
- For record of event -- dangerous
– We’re going to act on the information
Lying
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- Sybils: Verify identity
– Tie account to a real world thing
- Lying: Verify interaction
– Can cloud provider collect evidence to back tenant’s claim? – Tenants provide “evidence patterns” – Measurables: burst of traffic, crashes, packets actually exchanged
Cloud Provider as Vouching Authority
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- Need to create measurable metrics for QoC
- Sharing QoX can lead to better services/consumption
- A practical QoX information exchange is possible
- Of course, it’s all a work in progress
Conclusions
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SLIDE 21
THANK YOU
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