# If Startup & Logon Times Are OK

> See periodical trends in your startup time and login time data.

Source: https://docs.capaone.com/performanceguard/i-want-to-know/if-startup-logon-times-are-ok/  
Product: PerformanceGuard — a separate CapaSystems product; do not apply this page to any other.

The Startup Time (**ANALYZE > Graphs > Trend View > Startup Time**) and Login Time (**ANALYZE > Graphs > Trend View > Login Time**) trend view graphs gives you overviews of periodical trends in your startup or login time data.

:::tip
**This graph is useful because ...** it lets you detect if startup and login times are increasing in all or individual parts of your organization.
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:::tip
Have you ever wondered exactly when a computer is considered to be started, or exactly when a user is considered to be logged in? Read [Startup and Login Measurement Facts](/performanceguard/get-started/how-does-performanceguard-work/startup-and-login-measurement-facts/) to find out.
:::

Data is aggregated on a per-period basis. The available periods depend on the PerformanceGuard configuration.

- **Agents**: Select the group of computers that the chart should be based on. Super groups, that is groups of groups, are enclosed in \<\>.
- **Trend Period**:

:::note[Important]
**Example:** If you select **Day**, the graph will display one data point per day.
:::

:::tip
An hour-based trend period is particularly useful when you view data from up to one week. A day-based trend period is useful when you view data from up to one month. A week-based trend period is useful when you view data from more than one month. A month-based trend period is useful when you view data from more than six month
:::
- **Type**: Select which type of information you want to see on the chart. You can choose averages or 90-percentiles for each trend period.

:::note[Important]
<details>
<summary>What's a 90-percentile?</summary>

It is the value below which 90% of the startup/login times are found. For example, if your startup times have a 90-percentile of 25 seconds, 90% of your computers start up in 25 seconds or less.

</details>
:::
- **Interval**: Select the period of time that the graph should cover.

:::note[Important]
<details>
<summary>What does the interval X days mean?</summary>

If you select **X days**, you can define your own period, for example 90 days (which would cover the last 90 days). This can be particularly useful if you are going to include the trend graph in a report: Many organizations generate monthly trend reports that each cover the last 90 days. This would not always be possible with the **Last Quarter** interval, but with the **X days** interval you can easily generate such reports.

</details>
:::

  If the predefined intervals don't suit you, select **Custom** to [Custom Time Periods on Graphs](/performanceguard/analyze/custom-time-periods-on-graphs/).

:::caution
Data is aggregated on a per-period basis. The available periods depends on the PerformanceGuard configuration (**ADMINISTRATION > Reporting > Period**).
:::

:::caution
Average values on trend graphs are based on a weighted average. That means that each value to be averaged is assigned a weight based on the number of occurrences of that value.
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