AZ Managed IT
Forums
Connect, Share, Solve – Empowering IT Solutions Together!
Introduction:
Network latency in virtualized environments can impact performance, especially for services requiring real-time communication. This guide outlines advanced methods to troubleshoot and resolve network latency.
Steps to Troubleshoot:
-
Monitor Network Traffic: Use tools like Wireshark or tcpdump to capture network packets and analyze the traffic for any signs of latency, dropped packets, or retransmissions.
-
Check Hypervisor Network Settings: In environments like Hyper-V or VMware, ensure that virtual NIC settings are optimized. Enable offloading options like TCP Offload or Jumbo Frames to reduce CPU load and network overhead.
-
Examine Host Resource Usage: High CPU or memory usage on the host can affect network performance in virtual machines. Use
top(Linux) or Task Manager (Windows) to check resource usage on the host machine. -
Inspect VLAN Configurations: If using VLANs, ensure they are properly configured and there is no misconfiguration at the switch or router level that could be causing delays in packet delivery.
-
Test with iperf: Run the
iperftool between virtual machines and physical machines to measure network bandwidth and latency. This helps isolate whether the issue lies in the virtual network or the physical network infrastructure. -
Disable Unnecessary Network Features: Turn off unused features like virtual machine checkpoints or snapshots that could introduce additional I/O overhead and lead to network latency.
Latest Post: projectM-visualizer Our newest member: Joe Quintero Recent Posts Unread Posts
