Why Do We Need to Measure User Experience When We Have Performance Monitoring?

Device Metrics vs User Experience

In many environments, we often encounter a phenomenon:

• Server CPU is normal
• Database has no slow SQL
• Network bandwidth is not high

But users keep reporting: the system is slow.

The problem is: everything looks normal in monitoring, but user experience is abnormal.

Because device monitoring focuses on device status, it cannot reflect user experience.

"I Know It's Slow, Do I Still Need to Measure?"

People often say: "As soon as users call, I know the system is slow."

But the problem is: you know it's "slow," but you don't know "how slow".

Why Must We Quantify User Experience?

Because only data can answer three key questions:

1. Is it only a few terminals that are slow, or a widespread slowdown?
2. Is one system slow, or multiple systems slow?
3. When did the slowness start?

These questions essentially define one thing: the "scope" and "severity" of the current business impact.

"Impact Level" Determines Troubleshooting Direction

Different impact scopes correspond to completely different troubleshooting paths:

• Only one system is slow → prioritize checking that system
• Multiple systems are slow simultaneously → prioritize checking infrastructure
• A few terminals are slow → prioritize checking terminals or access network

In other words: not all "slowness" requires full-stack troubleshooting.

Value of Slow Terminal Measurement: Giving Troubleshooting a "Coordinate System"

Slow terminal measurement essentially does two things:

• Defines the scope (which users are slow)
• Pinpoints the time (when it started to be slow)

When placed on the same timeline as device performance metrics: it directly correlates "user slowness" with "system changes".

What Changes Does It Bring?

Slow terminal measurement is not to prove "slowness," but to define "the scope and time of slowness".

The Hanyuan Wangzhi IT Operations System places slow terminal measurement and device performance metrics under the same time coordinate system, combining the two for analysis and assisting troubleshooting through impact level.