Memory Footprints by Application Type

Web Business Transaction (HTML/HTTP)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,935 1,935 1.89
25 10,323 413 0.40
50 20,400 408 0.40

Web Low Level (HTTP)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,044 2,044 2.00
25 12,136 485 0.47
50 22,732 455 0.44

Web Browser Driven (AJAX)

The memory footprint for browser-driven Web load tests depends on several factors. Because browser-driven load tests use Internet Explorer for replay, you should be aware of the following:
  • The browser (Internet Explorer) uses memory. Depending on the version of Internet Explorer that you use, this memory footprint varies.
  • Memory usage depends on how you have configured the caching settings in Internet Explorer.
  • The application under test uses memory, which often increases as the VUser interacts with the application.

To get a basic understanding of how much memory a VUser requires when conducting a browser-driven Web load test, execute a try script run and monitor the memory usage (uncheck the Visible Client check box for exact results). Note that memory may increase while using the application under test though. It is recommended to script BrowserStart functions at certain points in your script to reset the browser state (cookies, cache and history).

Silverlight

Users PerfRun (KB) Per User (KB) Per User (MB)
1 11,040 11,040 10.78
25 13,640 546 0.53
50 16,152 323 0.32

Flash Remoting

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,912 1,912 1.87
25 12,776 511 0.50
50 20,896 418 0.41

WebDav (MS Outlook Web Access)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 3,588 3,588 3.50
25 17,724 709 0.69
50 33,364 667 0.65

Remedy Ars Web

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,288 2,288 2.23
25 9,688 388 0.38
50 17,340 347 0.34

Email (SMTP/POP)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,904 1,904 1.86
25 5,268 211 0.21
50 8,912 178 0.17

Directory Server (LDAP)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,920 2,920 2.85
25 not tested N/A N/A
50 not tested N/A N/A

FTP

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,420 2,420 2.36
25 5,352 214 0.21
50 8,348 167 0.16

TCP/IP based Application

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,912 1,912 1.87
25 5,624 225 0.22
50 9,500 190 0.19

Mixed Protocols

Users PerfRun (KB) Per User (KB) Per User (MB)
1 N/A N/A N/A
25 N/A N/A N/A
50 N/A N/A N/A

TN3270

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,224 2,224 2.17
25 7,424 297 0.29
50 13,652 273 0.27

TN5250

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,495 1,495 1.46
25 not tested N/A N/A
50 not tested N/A N/A

VT100/VT200

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,069 2,069 2.02
25 7,168 287 0.28
50 10,664 213 0.21

SAPGUI

Users PerfRun (KB) Per User (KB) Per User (MB)
1 30,656 30,656 29.94
25 110,180 4,407 4.30
50 194,532 3,891 3.80

SAP NetWeaver (Web)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,072 2,072 2.02
25 10,084 403 0.39
50 17,936 359 0.35

Peoplesoft

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,936 1,936 1.89
25 9,812 392 0.38
50 16,408 328 0.32

Oracle 11i

Users PerfRun (KB) Per User (KB) Per User (MB)
1 22,636 22,636 22.11
25 34,748 1,390 1.36
50 51,104 1,022 1.00

Siebel 7 Web Client (incl. IE Option Pack)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,256 2,256 2.20
25 11,532 461 0.45
50 20,576 412 0.40

Radius

Users PerfRun (KB) Per User (KB) Per User (MB)
1 16,104 16,104 15.73
25 21,284 851 0.83
50 26,268 525 0.51

XML/SOAP (recording Web Service client)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,676 2,676 2.61
25 8,460 338 0.33
50 16,436 329 0.32

.NET Framework using Visual Studio .Net Add-On

Users PerfRun (KB) Per User (KB) Per User (MB)
1 19,964 19,964 19.50
25 N/A N/A N/A
50 N/A N/A N/A

Java Framework

Users PerfRun (KB) Per User (KB) Per User (MB)
1 13,044 13,044 12.74
25 22,356 894 0.87
50 27,920 558 0.55

IIOP – Corba / EJB (RMI over IIOP)

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,736 2,736 2.67
25 31,696 1,268 1.24
50 61,960 1,239 1.21

Jacada

Users PerfRun (KB) Per User (KB) Per User (MB)
1 15,556 15,556 15.19
25 24,020 961 0.94
50 31,552 631 0.62

Citrix Server

Users PerfRun (KB) Per User (KB) Per User (MB)
1 3,900 3,900 3.81
25 9,000 360 0.35
50 11,500 230 0.22

Visual Basic

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,100 2,100 2.05
25 4,128 165 0.16
50 6,276 126 0.12

Oracle

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,732 1,732 1.69
25 3,696 148 0.14
50 5,792 116 0.11

ODBC

Users PerfRun (KB) Per User (KB) Per User (MB)
1 5,468 5,468 5.34
25 16,918 677 0.66
50 29,016 580 0.57

DB2 CLI

Users PerfRun (KB) Per User (KB) Per User (MB)
1 5,168 5,168 5.05
25 21,952 878 0.86
50 37,468 749 0.73

Tuxedo (all Feat.) + Clarify

Users PerfRun (KB) Per User (KB) Per User (MB)
1 2,400 2,400 2.34
25 Not tested N/A N/A
50 Not tested N/A N/A

Silk Test

Users PerfRun (KB) Per User (KB) Per User (MB)
1 13,000 13,000 12.7
25 N/A N/A N/A
50 N/A N/A N/A

Siebel 6/DB2

Users PerfRun (KB) Per User (KB) Per User (MB)
1 Not tested N/A N/A
25 Not tested N/A N/A
50 Not tested N/A N/A

Siebel 6/Oracle

Users PerfRun (KB) Per User (KB) Per User (MB)
1 9,428 9,428 9.21
25 66,540 2,662 2.60
50 125,720 2,514 2.46

Siebel 6/SQL Server

Users PerfRun (KB) Per User (KB) Per User (MB)
1 Not tested N/A N/A
25 Not tested N/A N/A
50 Not tested N/A N/A

GUI-level testing

Users PerfRun (KB) Per User (KB) Per User (MB)
1 1,788 1,788 1.75
25 5,080 203 0.2
50 Not tested Not tested Not tested

GUI-level tests require additional memory resources through the use of terminal services sessions and Silk Test, as follows:

  • 6,300 KB per VUser for Windows Terminal Services
  • 13,000 KB per VUser for SilkTest
  • 1,092 KB per VUser for Silk Performer's Session Manager
Parent topic: Getting Started