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

SourceForge Headquarters 1320 Columbia Street Suite 310 San Diego, CA 92101 +1 (858) 422-6466

Dan,

> 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?

More or less linear from 1 to 500 VUs,  response time ranged from .2 to 10 
seconds for the one page I was downloading.

> 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.

XP Pro Version 2002, SP2

> 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.

Asside from the synchronize requests appearing after the end timer for 
SP01_load_page, there is nothing in the script that looks suspicous to me. 
Perhaps you are assuming the disconnect 1 command is a synchronys command? I 
dont think it is.

> 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?

Haven't seen that before.

Also, I tried your script verbatim, and saw longer response times (makes 
sense, my original had only 1 get, again more or less linear to 500 users 
but sp01_load_page timer ranged from .96 to 40 seconds.

Minus the network differences, this seems to indicate a problem unique to 
your load server.

-Bernie

----- Original Message ----- 
From: "Dan Downing" <ddo...@me...>
To: <ope...@li...>
Sent: Friday, July 13, 2007 9:42 AM
Subject: [OpenSTA-users] FW: Severe load ramp-up limitation encountered

> 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
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> -- 
> OpenSTA-users mailing list Ope...@li...
> Subscribe/Unsubscribe/Options: 
> http://lists.sf.net/lists/listinfo/opensta-users
> Posting Guidelines: 
> http://portal.opensta.org/faq.php?topic=UserMailingList 