Are you trying to determine the overhead of having to renegotiate SSL when switching between https and http and/or between https requests? Are you specifically talking about Windows NLB?
There's definitely overhead if you have to renegotiate a SSL session between each request if the load balancer sends you to a different server every time. I'm not sure how/if Windows NLB handles this. When we were testing SSL re-negotiate overhead we ended up doing this in our performance lab with Load Runner. We basically compared ART and CPU of load balanced http, https, and https with sticky sessions (didn't try SSL term at the VIP). We ended up using SSL with sticky sessions because we were able to use commodity hardware using layer 4 routing via HA-Proxy rather than dealing with the overhead of layer 7 or an expensive hardware load balancer. Good luck! -Shawn On Fri, Apr 22, 2011 at 4:43 PM, Ryan Riley <[email protected]>wrote: > Any recommendations on testing a NLB environment? In particular, I'm trying > to find a way to explore the impact in our environment of bouncing between > our NLB servers, especially when switching between HTTP and HTTPS. Any > thoughts are appreciated. I'm having a hard time tracking anything down on > this one. > > Cheers! > > Ryan Riley > > Email: [email protected] > LinkedIn: http://www.linkedin.com/in/ryanriley > Blog: http://wizardsofsmart.net/ > Website: http://panesofglass.org/ > > -- > You received this message because you are subscribed to the Google Groups > "Seattle area Alt.Net" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/altnetseattle?hl=en. > -- You received this message because you are subscribed to the Google Groups "Seattle area Alt.Net" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/altnetseattle?hl=en.
