The Change Point system has detected a regression. This should be investigated.

Evergreen Task link: https://evergreen.mongodb.com/task/wiredtiger_ubuntu2004_perf_tests_arm64_perf_test_parallel_pop_stress_7a122e7167895a13b4b4037bb675a5717ce29d11_24_01_05_00_29_53

Screenshot:

// Optional
Further details: The fallout is caused by moving a barrier around in WT-12003, CC-ing luke.pearson@mongodb.com andrew.morton@mongodb.com and chenhao.qu@mongodb.com.

This commit also caused four other improvements (linked below) so I'm not sure this warrants a revert or anything like that.

The link to the change point:
https://performance-monitoring-and-analysis.server-tig.prod.corp.mongodb.com/baron?change_point_filters=%5B%7B%22active%22%3Atrue%2C%22name%22%3A%22commit%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%227a122e7167895a13b4b4037bb675a5717ce29d11%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22commit_date%22%2C%22operator%22%3A%22after%22%2C%22type%22%3A%22date%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22project%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Ewiredtiger%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22variant%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eubuntu2004%5C%5C-perf%5C%5C-tests%5C%5C-arm64%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22task%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eperf%5C%5C-test%5C%5C-parallel%5C%5C-pop%5C%5C-stress%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22test%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eparallel%5C%5C-pop%5C%5C-stress%5C%5C.wtperf%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22measurement%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5ELoad%5C%5C%20time%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22percent_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22z_score_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22h_score%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22absolute_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22build_failures%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22bf_suggestions%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_status%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22changeType%22%2C%22operator%22%3A%22eq%22%2C%22type%22%3A%22select%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_contexts%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%5D

The other changepoints (improvements):

https://performance-monitoring-and-analysis.server-tig.prod.corp.mongodb.com/baron?change_point_filters=%5B%7B%22active%22%3Atrue%2C%22name%22%3A%22commit%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%227a122e7167895a13b4b4037bb675a5717ce29d11%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22commit_date%22%2C%22operator%22%3A%22after%22%2C%22type%22%3A%22date%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22project%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Ewiredtiger%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22variant%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eubuntu2004%5C%5C-perf%5C%5C-tests%5C%5C-arm64%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22task%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eperf%5C%5C-test%5C%5C-evict%5C%5C-btree%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22test%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eevict%5C%5C-btree%5C%5C.wtperf%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22measurement%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5ELoad%5C%5C%20time%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22percent_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22z_score_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22h_score%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22absolute_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22build_failures%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22bf_suggestions%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_status%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22changeType%22%2C%22operator%22%3A%22eq%22%2C%22type%22%3A%22select%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_contexts%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%5D

https://performance-monitoring-and-analysis.server-tig.prod.corp.mongodb.com/baron?change_point_filters=%5B%7B%22active%22%3Atrue%2C%22name%22%3A%22commit%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%227a122e7167895a13b4b4037bb675a5717ce29d11%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22commit_date%22%2C%22operator%22%3A%22after%22%2C%22type%22%3A%22date%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22project%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Ewiredtiger%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22variant%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eubuntu2004%5C%5C-perf%5C%5C-tests%5C%5C-arm64%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22task%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eperf%5C%5C-test%5C%5C-mongodb%5C%5C-large%5C%5C-oplog%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22test%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Emongodb%5C%5C-large%5C%5C-oplog%5C%5C.wtperf%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22measurement%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5ELoad%5C%5C%20time%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22percent_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22z_score_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22h_score%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22absolute_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22build_failures%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22bf_suggestions%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_status%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22changeType%22%2C%22operator%22%3A%22eq%22%2C%22type%22%3A%22select%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_contexts%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%5D

https://performance-monitoring-and-analysis.server-tig.prod.corp.mongodb.com/baron?change_point_filters=%5B%7B%22active%22%3Atrue%2C%22name%22%3A%22commit%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%227a122e7167895a13b4b4037bb675a5717ce29d11%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22commit_date%22%2C%22operator%22%3A%22after%22%2C%22type%22%3A%22date%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22project%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Ewiredtiger%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22variant%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eubuntu2004%5C%5C-perf%5C%5C-tests%5C%5C-arm64%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22task%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eperf%5C%5C-test%5C%5C-update%5C%5C-btree%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22test%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eupdate%5C%5C-btree%5C%5C.wtperf%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22measurement%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5ELoad%5C%5C%20time%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22percent_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22z_score_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22h_score%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22absolute_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22build_failures%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22bf_suggestions%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_status%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22changeType%22%2C%22operator%22%3A%22eq%22%2C%22type%22%3A%22select%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_contexts%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%5D

https://performance-monitoring-and-analysis.server-tig.prod.corp.mongodb.com/baron?change_point_filters=%5B%7B%22active%22%3Atrue%2C%22name%22%3A%22commit%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%227a122e7167895a13b4b4037bb675a5717ce29d11%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22commit_date%22%2C%22operator%22%3A%22after%22%2C%22type%22%3A%22date%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22project%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Ewiredtiger%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22variant%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eubuntu2004%5C%5C-perf%5C%5C-tests%5C%5C-arm64%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22task%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eperf%5C%5C-test%5C%5C-update%5C%5C-checkpoint%5C%5C-btree%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22test%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5Eupdate%5C%5C-checkpoint%5C%5C-btree%5C%5C.wtperf%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22measurement%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%5ELoad%5C%5C%20time%24%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22percent_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22z_score_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22h_score%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22absolute_change%22%2C%22operator%22%3A%22gt%22%2C%22type%22%3A%22number%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22build_failures%22%2C%22operator%22%3A%22matches%22%2C%22type%22%3A%22regex%22%2C%22value%22%3A%22%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22bf_suggestions%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_status%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22changeType%22%2C%22operator%22%3A%22eq%22%2C%22type%22%3A%22select%22%7D%2C%7B%22active%22%3Atrue%2C%22name%22%3A%22triage_contexts%22%2C%22operator%22%3A%22inlist%22%2C%22type%22%3A%22listSelect%22%7D%5D