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15 Apr

How to Monitor Web Page Serve Time with the SevOne PLA

Monitoring Serve Time with the SevOne PLA

There are many interesting use cases for the SevOne Performance Log Appliance (PLA), but here’s one we recently uncovered: monitoring the time it takes to serve up a web page using Apache logs.

As Infrastructure Developer Marius Ducea pointed out in his blog Apache Logs: How Long Does It Take to Serve a Request, you can configure Apache logs to report on the time taken to serve a page. This value can be represented in seconds (%T) or microseconds (%D) in the LogFormat line. See the image below for an example:

Log Format

Once you’ve ingested this data into the SevOne PLA, you can do some interesting things to monitor the performance of your web applications:

  • Automatically baseline the metric so that you may receive alerts any time the performance deviates from expected normal behavior (i.e. it’s taking much longer than typical to serve a page)
  • Categorize all results by time frame in order to pinpoint problem servers, such as all servers taking longer than x seconds to serve a page
  • Compare metrics from internal and external users accessing the site to determine if one group suffers longer delay
  • View which URLs are taking the longest to respond
  • Compare serve time metrics to the underlying infrastructure metrics collected by SevOne (e.g. CPU, memory) to better understand event correlation

With this capability in place, you will have a solid metric for monitoring the performance of your internal and customer-facing web application delivery.

For more information on how SevOne is advancing the use of log analytics for performance monitoring, visit our Performance Log Analytics page.

Written by Scott Frymire
Director of Content Marketing

Scott Frymire joined SevOne in September 2012 and currently serves as Director of Content Marketing. His primary interest is interpreting how IT trends in the enterprise and service provider markets – such as cloud, software-defined everything, and the Internet of Things – impact the performance monitoring landscape. Prior to SevOne, Scott spent 16 years in marketing business-to-business software and services for ERP solution providers including Prophet 21, Activant, and Epicor.

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