In jadice web toolkit for displaying documents, the backend renders Tiles as images that can be displayed in the Browser. The details are described in the documentation. 

This page is intended to give an overview of the different options for generating the Tiles when it comes to file-size, memory consumption and response time.

Overview

Details

Test setup

• JMeter 5.3

  • 20 Threads

  • Ramp-up 15s

  • 50 loops

• Tomcat 9.0.40

• Java
  openjdk version "11.0.9.1" 2020-11-04
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.9.1+1)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.9.1+1, mixed mode)

• jadice web toolkit 5.10.6.1

• Docker Image: tomcat:9.0.40-jdk11-adoptopenjdk-hotspot

• Docker command:
  docker run -p 8080:8080 -p 9010:9010 -m 3072m --cpus=4 jwt-tomcat11

  • 9010 used for JMX monitoring

• Jadice.properties:
  jadice.viewer.cache.sizeHighwaterMarkPercent=25
jadice.viewer.cache.maxNumberOfCacheEntries=3000
jadice.viewer.cache.maximumExpiryObjectCountRatio=10
jadice.viewer.cache.maxAgeExpiryEnabled=true
jadice.viewer.cache.maxAge=30
jadice.viewer.cache.maxAge.timeUnit=MINUTES

• Tile-Caching disabled

Test 1

Scenario

These results were performed on the same machine so the response time can be considered as "render time" since the transfer doesn't traverse over an actual network

Test result

Tile compression type	Description	Samples	Response time			Heap			File-size

Tile compression type	Description	Samples	Response time			Heap			File-size
			Average (ms)	Min (ms)	Max (ms)	Max (bytes)	Peak Size (bytes)		Average bytes (bytes)
IMAGEIO	former default	1000	1324	72	5650	805.306.368	551.550.976	Open	287.472
IMAGEIO_NO_STREAM	same as above but does not use streaming	1000	1633	81	8897	805.306.368	379.584.512	Open	287.472
PNGJ_BEST_COMPRESSION	90% compression level	1000	2587	392	6660	805.306.368	480.247.808	Open	279.347
PNGJ_BEST_SPEED	10% compression level	1000	1215	43	6100	805.306.368	402.653.184	Open	320.218
WEBP_LOSSY	default, 60% compression quality	1000	954	83	20015	805.306.368	805.306.368	Open	121.205
WEBP_LOSSLESS		1000	1724	174	6576	805.306.368	460.324.864	Open	156.564
WEBP_LOSSY_HIGH_QUALITY	78% compression quality	1000	1558	278	6498	805.306.368	530.579.456	Open	140.674
			less is better	less is better	less is better	less is better	less is better		less is better

Test 2

Scenario

The application was accessed via the internet with the following connection types:

• Client (JMeter): Fibrechannel 1GBit/s download 1GBit/s upload

• Host: Coax 1GBit/s download 50MBit/s upload

• average ping to host: 32ms

• hops to host: 11

Test result