go.tools/cmd/benchcmp: multiple -cpu results are no longer sorted #7259
Description
What steps will reproduce the problem?
% go tool benchcmp {old,new}.txt
benchmark old ns/op new ns/op delta
BenchmarkChanContended-2 2303 2108 -8.47%
BenchmarkChanSync-2 5954 6361 +6.84%
BenchmarkChanProdCons100-2 2093 2183 +4.30%
BenchmarkChanNonblocking-2 415 431 +3.86%
BenchmarkChanProdCons0-2 1539 1490 -3.18%
BenchmarkChanContended 1264 1304 +3.16%
BenchmarkChanSem-2 2071 2133 +2.99%
BenchmarkSelectContended 4125 4007 -2.86%
BenchmarkSelectUncontended-2 2131 2084 -2.21%
BenchmarkSelectUncontended 4023 3935 -2.19%
BenchmarkChanUncontended-2 626 637 +1.76%
BenchmarkChanProdConsWork100 5103 5016 -1.70%
BenchmarkChanProdConsWork10 5452 5361 -1.67%
BenchmarkSelectProdCons-2 6823 6711 -1.64%
BenchmarkChanProdCons10-2 2381 2420 +1.64%
BenchmarkChanUncontended 1238 1257 +1.53%
BenchmarkChanCreation-2 1574 1551 -1.46%
BenchmarkChanProdConsWork10-2 2899 2858 -1.41%
BenchmarkChanProdConsWork100-2 2794 2758 -1.29%
BenchmarkChanNonblocking 475 469 -1.26%
BenchmarkChanProdCons100 1357 1344 -0.96%
BenchmarkChanProdConsWork0 6525 6464 -0.93%
BenchmarkChanProdConsWork0-2 3359 3328 -0.92%
BenchmarkGoroutineSelect-2 15964050 16111755 +0.93%
BenchmarkChanCreation 2964 2941 -0.78%
BenchmarkChanSync 2662 2644 -0.68%
BenchmarkChanSem 1277 1285 +0.63%
BenchmarkChanProdCons10 1714 1705 -0.53%
BenchmarkSelectNonblock-2 987 992 +0.51%
BenchmarkChanProdCons0 2747 2755 +0.29%
BenchmarkSelectProdCons 12751 12781 +0.24%
BenchmarkSelectNonblock 1967 1970 +0.15%
BenchmarkGoroutineSelect 25675354 25652770 -0.09%
BenchmarkSelectContended-2 2351 2352 +0.04%
What is the expected output? What do you see instead?
Results should be sorted so that all benchmarks are grouped by their relative -cpu
settings.
Please use labels and text to provide additional information.