VMware Performance Monitoring in 2026: The Metrics That Really Matter
Many organisations continue to rely on VMware to run critical workloads across data centres, private cloud environments, and hybrid infrastructures.
Even as the virtualisation market evolves, the fundamentals remain unchanged: performance issues are often easier to prevent than to fix.
The organisations getting the most from their VMware investments are those that continually monitor, optimise, and right-size their environments.
Why Performance Monitoring Matters
Virtualisation delivers significant advantages:
- Better hardware utilisation
- Improved resilience
- Reduced physical infrastructure costs
- Greater workload flexibility
- Faster provisioning of services
However, every VMware environment is ultimately built on shared resources.
Multiple workloads compete for:
- CPU
- Memory
- Storage
- Network bandwidth
When one resource becomes constrained, performance can deteriorate rapidly across multiple virtual machines.
Effective monitoring provides visibility into these issues before users start experiencing problems.
The Four Performance Areas Every VMware Administrator Should Monitor
1. CPU Performance
CPU contention remains one of the most common causes of VMware performance issues.
Watch for:
- High CPU Ready Time
- CPU Contention
- Excessive vCPU allocation
- Host CPU saturation
Many environments still suffer from over-sizing. Assigning too many vCPUs to a VM can actually reduce performance rather than improve it.
A regularly reviewed right-sizing strategy often delivers both performance improvements and infrastructure cost savings.
2. Memory Utilisation
Memory remains one of VMware’s most important resources.
Key metrics include:
- Active Memory
- Consumed Memory
- Ballooning Activity
- Swapping Activity
- Host Memory Utilisation
Memory ballooning is generally an early warning sign that hosts are beginning to experience pressure.
Memory swapping should be considered a serious issue, as disk-based memory operations can significantly impact application performance.
A healthy environment should experience minimal swapping activity.
3. Storage Performance
Today’s applications are increasingly data-intensive.
Monitor:
- Datastore Latency
- Read Latency
- Write Latency
- Storage Throughput
- Storage Capacity Utilisation
Storage bottlenecks frequently appear as application issues when the underlying problem is insufficient storage performance.
This is particularly important for:
- Databases
- ERP platforms
- Business applications
- VDI environments
- Backup systems
4. Network Performance
As workloads become more distributed, network visibility becomes increasingly important.
Monitor:
- Network throughput
- Packet loss
- Network latency
- Dropped packets
- VLAN performance
Many application performance issues originate in the network layer rather than the virtual machine itself.
Capacity Planning: The Often-Ignored Discipline
Performance management and capacity planning should always work together.
Many organisations only investigate infrastructure once performance problems occur.
A more proactive approach involves:
- Establishing performance baselines
- Monitoring growth trends
- Forecasting future demand
- Identifying resource constraints early
- Planning infrastructure investments strategically
Capacity planning can also help organisations avoid unnecessary spending by highlighting underutilised resources.
Modern VMware Monitoring Best Practices
Today’s VMware administrators should focus on outcomes rather than simply collecting technical statistics.
Best practice usually includes:
Establish Baselines
Understand what “normal” looks like.
Without baseline data it becomes difficult to identify emerging issues.
Monitor Trends Rather Than Single Spikes
Short performance spikes rarely cause concern.
Persistent trends often indicate underlying issues that require action.
Automate Alerting
Infrastructure teams should be alerted before users notice problems.
Focus alerts on:
- Resource contention
- High latency
- Memory pressure
- Storage constraints
- Capacity thresholds
Right-Size Regularly
Many organisations discover that virtual machines have significantly more resources allocated than they actually use.
Regular reviews improve:
- Performance
- Capacity utilisation
- Infrastructure costs
- Licensing efficiency
Align Monitoring with Business Services
Rather than monitoring individual VMs in isolation, monitor the applications and business services that depend on them.
A slight increase in resource consumption may be irrelevant. An outage affecting a customer-facing application is not.
The Changing VMware Landscape
Following Broadcom’s acquisition of VMware, many organisations are reviewing their virtualisation strategies.
Some are:
- Modernising VMware environments
- Migrating to VMware Cloud Foundation
- Optimising licensing models
- Extending workloads into public cloud platforms
- Evaluating alternative hypervisor technologies
Regardless of strategic direction, effective monitoring remains essential.
You cannot optimise what you cannot measure.
Building VMware Skills for the Future
Even with the growth of cloud computing and containerisation, VMware remains a critical component of many enterprise infrastructures.
Infrastructure teams continue to require strong skills in:
- vSphere Administration
- Performance Monitoring
- Capacity Planning
- Troubleshooting
- High Availability
- Disaster Recovery
- Hybrid Cloud Architecture
These skills help organisations operate existing environments effectively while planning for future transformation initiatives.
VMware Expertise from SureSkills
SureSkills continues to help organisations develop VMware and infrastructure expertise through consultancy, mentoring, and professional training.
While the VMware ecosystem has evolved significantly in recent years, the need for skilled infrastructure professionals has not changed.
Whether you are looking to improve performance, optimise capacity, modernise infrastructure, or develop internal capability, the right knowledge remains one of the most valuable investments you can make.