Top 5 IT Infrastructure Performance Issues
 

Top 5 IT Infrastructure Performance Issues

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Explore the Top 5 IT Infrastructure Performance Issues that include routers, switches, virtual servers, unified communication, connectivity, and more.

Explore the Top 5 IT Infrastructure Performance Issues that include routers, switches, virtual servers, unified communication, connectivity, and more.

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Top 5 IT Infrastructure Performance Issues Top 5 IT Infrastructure Performance Issues Presentation Transcript

  • Top 5 IT Infrastructure Performance Issues
  • Our Analysis • The data provided in this presentation was gathered from over 4,000 network engagements • We compile the data from physical network components, virtual infrastructure, unified communications and Cloud IaaS environments • We provide benchmarks using our data to help companies establish their own benchmark and identify issues to help in troubleshooting and planning for change
  • True Top 5 Performance issues • Hidden Network Oversubscription • Clear Network Overutilization • VMware Storage Latency • VMware Memory Oversubscription • Critical Interface Packet Loss
  • Hidden Network Oversubscription What is Network Oversubscription? Switch Backplane 1 Gbps 4Gbps Ports
  • Are You Suffering from Network Oversubscription? • 32% of Organizations have Oversubscribed Line Cards • 130 – The average number of interfaces that drop packets due to the oversubscription (Per Organization!) Total Oversubscribed Ports 14% WS-X4548-GB-RJ45V Oversubscribed 8:1 WS-X4648-RJ45V+E Oversubscribed 2:1 15% 56% 15% WS-X4548-GB-RJ45 Oversubscribed 8:1 WS-X6148-GE-TX Oversubscribed 8:1
  • Look for Known Offenders 1200 1000 800 600 400 500 373 200 0 WS-X6748-GE-TX WS-X6148A-GE-45AF WS-X6348-RJ-45 WS-X6724-SFP WS-X6148-GE-TX WS-X6148A-GE-TX WS-X6548-GE-TX 33 % of Cisco 6500 Ports are on Oversubscribed Line Cards 985 304 247 223 188 “It is important to note that the 6148A-GE and the 6548-GE are both engineered with 8:1 oversubscription ratios and, as such, while suitable at the access layer, these linecards would not be recommended to deploy as uplinks or within the distribution and core layers – Cisco QoS Design Guide (Telepresence) “http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/tpqoscampus.html
  • Network Overutilization 68 % of organizations suffer from Overutilization Out of this 68% only an average of.... 0.66% of the organizations interfaces are Overutilized Of these interfaces only…. 49% are LAN interfaces
  • Network Overutilization This bandwidth chart was calculating using a 30 second load intervals It experienced 9,766,038 packets dropped due to overutilization in the ~11 day period
  • VMware Storage Latency How many people monitor their storage latency for servers? 67 % of VMware deployments have severe storage latency Average storage latency on these devices was 278ms. 278ms!!
  • VMware Memory Oversubscription Memory oversubscription is exactly as it sounds…. you’ve provisioned and used more memory than you have. The metrics you look at are • Average Swap Wait Time – delay that occurs with memory swap - Goal: 0ms • Read / Write Latency – Latency to disk - Goal: <20ms
  • Critical Interface Packet Loss Q: What is considered Critical interface packet loss? A: Errors or discards on aggregation links including: 1) Infrastructure uplinks 2) Layer 3 interfaces 3) Server egress ports 4) Layer 2 forwarding 5+ hosts (ex. Unknown or unmanaged segments) Types of packet loss Errors What is it?: CRC, malformed frame, collision What can be the issue?: Layer1/layer2 issue Clocking or duplex mismatch Half duplex technology Cost to fix / time to fix Low / Low-moderate Discards Implicit discard of a packet Overutilization Oversubscription Queuing or policing mechanism Misconfiguration Moderate / High
  • Critical Interface Packet Loss 89.7% of organizations have resolvable packet loss on critical interfaces Average Number of Interfaces with Pack Loss 68 70 60 50 42 38 40 27 30 19 20 12 10 3 10 0 Critical Uplinks with Discards Critical Uplinks with Errors Router Interfaces with Discards Router Interfaces with Errors Server Links Server Links Shared with with Errors Uplinks with Discards Discards Shared Uplinks with Errors
  • Contact RISC Networks (866) 808-1227 1 Rankin Ave, 2nd Floor Asheville, NC 28801 info@riscnetworks.com