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[DOCS] Latency correlations (#110557)

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Lisa Cawley 2021-09-01 12:34:48 -07:00 committed by GitHub
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25
docs/apm/correlations.asciidoc
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@ -12,7 +12,7 @@ piece of hardware, like a host or pod. Or, perhaps a set of users, based on IP
address or region, is facing increased latency due to local data center issues.
To find correlations, select a service on the *Services* page in the {apm-app}
and click **View correlations**.
then select a transaction group from the *Transactions* tab.
NOTE: Queries within the {apm-app} are also applied to the correlations.
@ -20,26 +20,25 @@ NOTE: Queries within the {apm-app} are also applied to the correlations.
[[correlations-latency]]
==== Find high transaction latency correlations
The correlations on the *Latency* tab help you discover which attributes are
contributing to increased transaction latency.
The correlations on the *Latency correlations* tab help you discover which
attributes are contributing to increased transaction latency.
[role="screenshot"]
image::apm/images/correlations-hover.png[Latency correlations]
The progress bar indicates the status of the asynchronous analysis, which
performs statistical searches across a large number of attributes. For large
time ranges and services with high transaction throughput this might take some
time. To improve performance, reduce the time range on the service overview
page.
time ranges and services with high transaction throughput, this might take some
time. To improve performance, reduce the time range.
The latency distribution chart visualizes the overall latency of the
transactions in the service. If there are attributes that have a statistically
significant correlation with slow response times, they are listed in a table
below the chart. The table is sorted by correlation coefficients that range from
0 to 1. Attributes with higher correlation values are more likely to contribute
to high latency transactions. By default, the attribute with the highest
correlation value is added to the chart. To see the latency distribution for
other attributes, hover over their row in the table.
transactions in the transaction group. If there are attributes that have a
statistically significant correlation with slow response times, they are listed
in a table below the chart. The table is sorted by correlation coefficients that
range from 0 to 1. Attributes with higher correlation values are more likely to
contribute to high latency transactions. By default, the attribute with the
highest correlation value is added to the chart. To see the latency distribution
for other attributes, hover over their row in the table.
If a correlated attribute seems noteworthy, use the **Filter** quick links:

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2
x-pack/plugins/apm/public/components/app/correlations/latency_correlations_help_popover.tsx
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@ -39,7 +39,7 @@ export function LatencyCorrelationsHelpPopover() {
<p>
<FormattedMessage
id="xpack.apm.correlations.latencyPopoverChartExplanation"
defaultMessage="The latency distribution chart visualizes the overall latency of the transactions in the service. When you hover over attributes in the table, their latency distribution is added to the chart."
defaultMessage="The latency distribution chart visualizes the overall latency of the transactions in the transaction group. When you hover over attributes in the table, their latency distribution is added to the chart."
/>
</p>
<p>