So I did some testing on my home network which uses standard rj45 cat6 the same as the ISP installed modem and router would use, and I have to say I am quite shocked about the results.
Using HRPING average ping to:
127.0.0.1 0.174ms
The first router I am connected to 0.721ms
The gateway, (second hop and last router) 1.164ms
My external IP (same gateway) 1.532ms
So this indicates that using rj45 solution would indeed add latency noticeable in the 1ms range.
The more scary thing however, if that it i perfor all tests and let them run for a minute or so, I start to see enormous spikes of much higher pings, even when pinging the first router im connected to, with no other active devices on my network these spikes could go as high as 4ms! Gateway 7ms, and external IP the highest spike was even 9ms !!!
smalles spikes (about 2x normal range) seem to happen about once every 10 pings, while the big ones happen not that often.
I guess that not only the latency but also the spikes would improve when using one of the solutions we're discussing right? Could someone do a test for me to see if SFP+/Mellanox gear suffers the same problem?
Whats your thought on this?