I suggest getting the term "stddev" in there somehow, maybe like this:
progress: 37.0 s, 115.2 tps, latency avg=8.678 ms stddev=1.792
My issue is to try to keep the line width under control so as to avoid line breaks in the terminal. Under throttling, there is also the time lag appended to the line.
Moreover, using 'xxx=figure" breaks simple "cut" pipelining to extract the figures, so I would prefer to stick to spaces.
Maybe:
progress: 36.0 s, 115.2 tps, lat avg 9.678 ms stddev 1.792, lag 0.143 ms
but I liked my "+-" approach:-)
100 +- 3 implies a range of 97 to 103 and no values are outside of that range.
