SharePoint and WebAcceleration

Question

I have recently configured a SharePoint application service using the latest SharePoint iApp (running Big-IP 11.4 HF 3). The default configuration for Web Acceleration creates a profile using optimized-acceleration. My understanding of the optimized-acceleration profile is that it uses LTM to perform all accelerated functions. Therefore I have selected the webacceleration-wam-enabled profile for this application. However, when accessing the SharePoint portal and viewing the Big-IP Dashboard, I see no optimized web throughput, web optimized transactions, web cache effectiveness or web image optimization. I do however see lots of OWS and WAM errors. I have looked in the wamd.log, pvac.log and others in the wa/ directory though I see none of these errors. I have also validated the wamd service is running using bigstart status wamd. I am also experiencing the same results when modifying the application to use the recommended optimized-acceleration profile. Any information the group can provide is greatly appreciated.

mikeshimkus_111 · Accepted Answer

The WAM application stats are really the only thing to look at other than the header.  It looks like some of the responses are being cached.&nbsp;
The X-WA-Info header should show you where the content was served from and what node of the acceleration policy it matched.  There are explananations on page 77 of this guide: &nbsp;
https://support.f5.com/content/kb/en-us/products/wa/manuals/product/wa_implementations_11_0_0/_jcr_content/pdfAttach/download/file.res/wa_implementations_11_%20%20%20%20%20%20%20%20%20%20%200_0.pdf&nbsp;
If you open the acceleration policy in BIG-IP GUI, and hover over the individual leaf names in the policy tree, it will display a 5 digit number.  That number corresponds to the node ID in the X-WA-Info header.&nbsp;

mikeshimkus_111 · Answer

Hi Lyonsson, first off, which version of the iApp template are you using?  The most recent is f5.microsoft_sharepoint_2010_2013.v1.0.0.tmpl.&nbsp;
Next, when you say you are selecting the webacceleration-wam-enabled profile, you mean you are selecting "Yes, use BIG-IP AAM" in response to the "Use the BIG-IP Application Acceleration Manager?" question, then choosing that acceleration profile in response to the "Which Web Acceleration profile do you want to use for caching?" question, correct?&nbsp;

dev_56330 · Answer

I am using f5.microsoft_sharepoint_2013.v1.1.Orc1.  And yes you are correct, I select "Yes, use BIG-IP-AAM (recommended)" and then selecting webacceleration-wam-enabled for the question "Which Web Acceleration profile do you want to use for caching?".

mikeshimkus_111 · Answer

Did you previously create an AAM web application and associate the webacceleration-wam-enabled profile with it before running the iApp?

In this case we recommend selecting the "Create a profile based on optimized-acceleration" option, as it will create all the necessary configuration for proper web acceleration.

dev_56330 · Answer

Mike, I have reverted to the "Recommended" settings and still see more errors than anything in the web acceleration dashboard.  I see some entries in the web cache effectiveness and less entries in the web optimized transactions while nothing in optimized web throughput or web image optimization.  How can I troubleshoot the OWS and WAM errors?

mikeshimkus_111 · Answer

In the iApp, can you select "Insert the debug header" from the "Do you want to insert the X-WA-Info header?" question?  If you then inspect the client traffic using Fiddler, HTTPWatch, or IE Developer Tools, you should see a header in the response named X-WA-Info.

I recommend visiting a page or pages several times to prime the cache, clearing the browser cache after each page refresh.  When you look at the  value of the X-WA-Info header, it should tell you which node of the acceleration policy applied to the response and whether or not it was cached.

See "Viewing X-WA-Info response headers" here:

https://support.f5.com/kb/en-us/products/wa/manuals/product/wa_concepts_11_0_0/wa_httpdata.html1029973

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SharePoint and WebAcceleration

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