twin sons of different mothers latency and bandwidth 2
TRANSCRIPT
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Twin Sons of Different Mothers: Latency and Bandwidth
Chris Crosby, CEO, Compass Datacenters
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Related, But Not the Same
• Bandwidth• Capacity of the “pipe”
the data is travelling through
• Latency• Function of distance• Time it takes to travel
between 2 points
2
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The Impact of Latency• Study by Akamai
• 1 second delay in page load speed• 16% drop in customer satisfaction
• Rich packet applications are more demanding• Ex: Netflix
• IoT• “Instantaneous” packet processing• Critical for many applications
• Ex: Real time inventory
• Data reads and writes• No such thing as a multi-availability zone public cloud
database
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The Latency Factors
• Distance and contention
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Latency: Factors• Operational requirements
• Ex: Hypervisors add overhead to transmission speed
• Contention for bandwidth (Public clouds)
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Solving the Latency Issue
• For now it’s geographical• Moving data as close to the end user as
possible• Edge data centers• Emerging
• Micro datacenters• Cisco FOG architecture
• Any device can be a data collection point• Must have computing, storage and network
connectivity
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Insufficient Bandwidth• IDC
• “50% of existing networks will be bandwidth constrained as a result of IoT”
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The Traditional Network• Access via public means
• Internet• Too many “chokepoints”
Source: Forrester
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An Alternative Approach• Presented to a Compass customer
• Direct Peering• Direct cloud connectivity
• Eliminate public internet
Graphics courtesy of Equinix
Internet
Campus
DC1
DC2
AWSEQIX DC
Cloud Exchang
e
Internet Exchang
eI2 Provider
AzureI2
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Eliminate the Internal Bottlenecks• Network only as fast as slowest component
• Backplane contention
• Considerations:• Top of rack switching• Faster switches
• 10, 25, 40, 50, 100GB
Graphic courtesy of Mellanix
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Summary
• Speed of delivery will only continue to grow• Lower latency• Higher bandwidth speeds
• The important question: • Can the network support what you want to do?
• Must eliminate contention/chokepoints• Internal and external• Failure to do so will result in:
• Ineffective operation• Customer dissatisfaction
• Must find partners agile enough to quickly adapt