[OpenSTA-users] FW: Severe load ramp-up limitation encountered

[Dan D. <ddo...@me...>]

Bernie Velivis wrote:
>I can't replicate your problem, but I am currently sitting behind a 10Mb cable >modem and am therefore running a different test.
>I was able to ramp up to 1000 users with no errors (expect some 10060 network >timeouts which seem reasonable given my slow link)
>My runtime parameters were:
>Total number of users for this task Group: 1000 # virtual users for timer >results 1000 # of virtual users for http results: 1
>Batch start options:
>interval between batches: 1
>Number of virt users per batch: 5
>Batch ramp up time (seconds): 1
>My script was set to loop for 1 hour and consisted of;
>Start Timer T_DANDOWNING
>PRIMARY GET URI "http://syn1.sellpoint.net/QA/smloadtest.html HTTP/1.0" ON
>You dont have any large local variables defined do you?
>FYI- I forced my 3.06 Ghz P4 Pentium processor to run at 1.5 Ghz, I have 2GB of memory. CPU utilization never got much over 20% and I saw no abnormal paging.
Bernie,
How good of you to attempt to replicate...and I will follow suit, seeing if I can replicate on my laptop (soon as I can resolve my local opensta installation issue--see question below).
Your test config looks the same, and despite your 10MB link, interesting that you did not peg your cpu or see abnormal paging.  What Timer values did you get at various points pon your way to 1000 vu?

What OS are you running on your laptop?  My server is running a Windows 2000 Server SP4; this server is hosted in a Tier 1 datacenter in a 100MB network.  Server has dual 100MB NICs.  I replicated this result on a second similar server too.
I have seven INTEGER local variables defined (part of my stabdard randomized ThinkTime vars)--but was not using them.  And contrary to my earlier response about WAITs, I actually had four WAIT 25 between the PRIMARY GET and the 4 subsequent GET URIs.  The full script is below.
Now, as to my installation issue on my XP Pro/SP2 laptop:  Modeler and name server work fine, but I cannot open a Test, and the icon for the Test in the Commander Explorer appears as a "Windows Generic" icon rather than the red-blue-green clover icon.  I just deinstalled/reinstalled.  Figure I must have a conflict with some other app/dll...Ever encounter this?  Will try on my other laptop when I get home...
Thanks for your help!
=========
!Browser:IE5
!Date : 6/20/2007
Environment
Description ""
Mode  HTTP
Wait  UNIT MILLISECONDS
Definitions
! Standard Defines
Include   "RESPONSE_CODES.INC"
Include   "GLOBAL_VARIABLES.INC"
CHARACTER*512 USER_AGENT
Integer   USE_PAGE_TIMERS
CHARACTER*256 MESSAGE

!********************************************************************************
! These standard declarations follow Cookie definitions

Integer  User_Think_Br (2 - 5)
Integer  User_Think_Type (3 - 5)
Integer  User_Think_Go (1-20) ! after semaphore
Integer  User_Think
Integer  Pacing_Between (2-3)
Integer  Pacing
Integer  WAITTime  ! for looping for response
Timer   T_SP_SYN1_V1
Timer   SP01_load_page
CONSTANT  DEFAULT_HEADERS = "Host: syn1.sellpoint.net^J" &
  "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 2.0.50727)"
Code
!Read in the default browser user agent field
Entry[USER_AGENT,USE_PAGE_TIMERS]
Start Timer T_SP_SYN1_V1
Start Timer SP01_load_page
WAIT 25

PRIMARY GET URI "http://syn1.sellpoint.net/QA/smloadtest.html HTTP/1.0" ON 1 &
  HEADER DEFAULT_HEADERS &
  ,WITH {"Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, " &
    "application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, " &
    "application/x-shockwave-flash, */*", &
   "Accept-Language: en-us", &
   "Connection: Keep-Alive"}
WAIT 25!328
  GET URI "http://syn1.sellpoint.net/QA/tentoe2.com HTTP/1.0" ON 1 &
   HEADER DEFAULT_HEADERS  &
   ,WITH {"Accept: */*", &
    "Referer: http://syn1.sellpoint.net/QA/smloadtest.html", &
    "Accept-Language: en-us", &
    "Connection: Keep-Alive"}
  WAIT 25!156
  GET URI "http://syn1.sellpoint.net/Tentoe/vsr_common.js HTTP/1.0" ON 1 &
   HEADER DEFAULT_HEADERS  &
   ,WITH {"Accept: */*", &
    "Referer: http://syn1.sellpoint.net/QA/smloadtest.html", &
    "Accept-Language: en-us", &
    "Connection: Keep-Alive"}
  WAIT 25!172
  GET URI &
   "http://syn1.sellpoint.net/Syndicate/" &
    "SynImage?r=1182394421812&ttpid=TTPID-ADA-1380&vsr_sku=smproduct3-1&vsr_price=23.4&vsr_stock=23&" &
    "vsr_button_url=http%3A//syn1.sellpoint.net/images/sellpoint-logo.gif&vsr_shopping_cart=http%3A/" &
    "/www.sellpoint.net HTTP/1.0" ON 1 &
   HEADER DEFAULT_HEADERS  &
   ,WITH {"Accept: */*", &
    "Referer: http://syn1.sellpoint.net/QA/smloadtest.html", &
    "Accept-Language: en-us", &
    "Connection: Keep-Alive"}
  WAIT 25!141
  GET URI "http://syn1.sellpoint.net/images/sellpoint-logo.gif HTTP/1.0" ON 1 &
   HEADER DEFAULT_HEADERS  &
   ,WITH {"Accept: */*", &
    "Referer: http://syn1.sellpoint.net/QA/smloadtest.html", &
    "Accept-Language: en-us", &
    "Connection: Keep-Alive"}
  DISCONNECT FROM 1
End Timer SP01_load_page
  SYNCHRONIZE REQUESTS
End Timer T_SP_SYN1_V1
Exit
ERR_LABEL:
If (MESSAGE <> "") Then
  Report MESSAGE
Endif
Exit
=============



...Dan
Dan Downing www.mentora.com