Re: Wondering what is costs more? HTCP\ICP or frontend instance?

Thanks Amos,

I am going to add something about it in the LoadBalancing as a
"recommendation" that will be explained in it.

It takes a while to write it down and organize it but I do think it will
add couple good technical notes.
These will help a cache implementor to have clear view over couple
important things while designing it.

Eliezer

On 11/07/2013 11:51 PM, Amos Jeffries wrote:
> On 2013-11-08 08:59, Eliezer Croitoru wrote:
>>
>> Now these instances will probably will talk HTCP or ICP, HTCP preferred.
>> Now I am wondering what will "cost" more?
>> using one Frontend instance that will LoadBalance the traffic or plain
>> HTCP?
>
> I expect that kernel level load balancing and HTCP between the instances
> would be faster.
>
> If you have a single instance as frontend it has to either be non-SMP
> (bottleneck!) or using UDS/HTCP/ICP/something to coordinate between its
> own internal SMP workers.
>
> So either way for the higher capacity setups you have some process
> communication going on. But with frontend instance you have all the
> parsing and processing overheads of that instance on top. The more
> efficient you make the inter-process communication the worse the
> frontend design looks.
>
> Amos
>
Received on Thu Nov 07 2013 - 22:46:05 MST