Agent Performance Report | APM Insight PHP Agent - Applications Manager User Guide

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Impact on CPU usage

When the target web application is set to receive 300 requests per minute, the APM Insight PHP Agent consumes only 1 % CPU on average (using default production settings).

On increasing the throughput to 600 requests per minute, the APM Insight PHP agent consumes around 0.3-1.6% CPU on average.

The below table summarizes the details

RPM (Requests per Minute)	% CPU Usage (Without Agent)	% CPU Usage (With Agent)
300	0.1-0.2	0.1-1.2
600	0.6-1.9	0.9-3.5

RPM (Requests per Minute)

% CPU Usage (Without Agent)

% CPU Usage (With Agent)

300

0.1-0.2

0.1-1.2

600

0.6-1.9

0.9-3.5

Impact on Physical Memory (RAM) usage

The APM Insight PHP Agent by default collects performance data and pushes it to its own service, every minute, and hence, the footprint on the user memory is minimal, and only transient.

The memory usage is a maximum of 212 KB at an RPM of 300, and a maximum of 24 KB at an RPM of 600.

The below table summarizes the details:

RPM (Requests per Minute)	Memory in KB (Without Agent)	Memory in KB (With Agent)
300	6344-8852	6360-9064
600	6360-9856	6364-988

RPM (Requests per Minute)

Memory in KB (Without Agent)

Memory in KB (With Agent)

300

6344-8852

6360-9064

600

6360-9856

6364-988

RPM (Requests per Minute)	% CPU Usage	Memory (KB)
300	0.1-0.3	4740-6012
600	0.3-0.7	4740-6104

RPM (Requests per Minute)

% CPU Usage

Memory (KB)

300

0.1-0.3

4740-6012

600

0.3-0.7

4740-6104

Impact on application response time

To calculate how fast php execution is, many use a PHP Benchmark script provided by http://www.php-benchmark-script.com/ The following table shows the impact of PHP agent's on your application's response time.

PHP version: 7.2.23-1+ubuntu18.04.1+deb.sury.org+1

Platform: Linux

Benchmark	Version 2.8	Version 2.9	No Agent
test_ifelse	1.446 sec	0.805 sec	0.763 sec
test_loop	1.911 sec	1.520 sec	1.511 sec
test_stringmanipulation	5.793 sec	3.065 sec	3.031 sec
test_math	4.578 sec	2.633 sec	2.569 sec
total	13.728 sec	8.023 sec	7.874 sec

Benchmark

Version 2.8

Version 2.9

No Agent

test_ifelse

1.446 sec

0.805 sec

0.763 sec

test_loop

1.911 sec

1.520 sec

1.511 sec

test_stringmanipulation

5.793 sec

3.065 sec

3.031 sec

test_math

4.578 sec

2.633 sec

2.569 sec

total

13.728 sec

8.023 sec

7.874 sec

Agent Performance Report for APM Insight PHP Agent

Test Environment

Impact on CPU usage

Impact on Physical Memory (RAM) usage

Impact on binary data processing

Impact on application response time

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Agent Performance Report for APM Insight PHP Agent

Test Environment

Impact on CPU usage

Impact on Physical Memory (RAM) usage

Impact on binary data processing

Impact on application response time

Active Directory
management Manage, track, and secure Active Directory

Identity governance
and administrationOrchestrate user identity management and access controls for Zero Trust

Privileged access
managementControl and secure privileged access to critical enterprise systems

Enterprise and IT service
managementDeliver a consistent employee experience across business functions

Customer service
managementBuild a one-stop portal for customers with efficient account management

IT asset
managementCentralize and automate the complete IT asset life cycle

Network and server
performance monitoringEnsure network, server, and storage reliability with AI-powered insights

IT incident
managementEfficiently manage and resolve IT incidents while ensuring transparency

Cloud-native solutions for IT managementMonitor, manage, audit, and secure your multi-cloud
and hybrid infrastructure