Regression on INTEL machines with TechEmpower Fortunes

[sebastienros]

Only INTEL, both windows and linux. All Fortunes middleware (not platform).

Minimum set of commits: a442971...ab98c9b

[sebastienros]

/cc @EgorBo

[MihaZupan]

From #84184 (comment)

Tried the following commits:

1. 1b56e96 (PR Improve IndexOfAnyValues throughput for needles with 0 #84184)
2. e241509 (commit just before nr. 3)
3. 58a1365 (PR Unroll StringBuilder.Append for const string #85894)

load	1	2		3
Requests/sec	304,458	302,716	-0.57%	281,044	-7.69%
Requests	4,585,264	4,570,922	-0.31%	4,243,602	-7.45%
Bad responses	0	0		0

[sebastienros]

Thanks @MihaZupan, that's very helpful.

[sebastienros]

@EgorBo confirmed this would also be fixed by #85551

[MihaZupan]

Since I already had the runtime built, here are the numbers from aspnet-perf-win to further confirm #85894 (comment):

load	2-perf	3-perf
Requests/sec	208,299	204,782	-1.69%
Requests	3,145,265	3,092,240	-1.69%
Bad responses	0	0

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Issue Details

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Only INTEL, both windows and linux. All Fortunes middleware (not platform).

Minimum set of commits: a442971...ab98c9b

Author:	sebastienros
Assignees:	-
Labels:	tenet-performance, area-CodeGen-coreclr, untriaged, needs-area-label
Milestone:	-