We do have a lot of machines with HT disabled. My (possibly suboptimal) way of detecting HT disabled on non-VMs is:
grep hypervisor /proc/cpuinfo > /dev/null || lscpu | grep 'Thread(s) per core: 1'
eqiad
analytics1001.eqiad.wmnet analytics1002.eqiad.wmnet analytics1026.eqiad.wmnet analytics1027.eqiad.wmnet bast1001.wikimedia.org carbon.wikimedia.org conf1001.eqiad.wmnet conf1002.eqiad.wmnet conf1003.eqiad.wmnet db1021.eqiad.wmnet db1049.eqiad.wmnet db1050.eqiad.wmnet db1051.eqiad.wmnet db1052.eqiad.wmnet db1053.eqiad.wmnet db1054.eqiad.wmnet db1055.eqiad.wmnet db1056.eqiad.wmnet db1057.eqiad.wmnet db1059.eqiad.wmnet db1060.eqiad.wmnet db1061.eqiad.wmnet db1062.eqiad.wmnet db1063.eqiad.wmnet db1064.eqiad.wmnet db1065.eqiad.wmnet db1066.eqiad.wmnet db1067.eqiad.wmnet db1068.eqiad.wmnet db1069.eqiad.wmnet db1070.eqiad.wmnet db1071.eqiad.wmnet db1072.eqiad.wmnet db1073.eqiad.wmnet dbproxy1006.eqiad.wmnet dbproxy1008.eqiad.wmnet dbstore1001.eqiad.wmnet dbstore1002.eqiad.wmnet es1013.eqiad.wmnet ganeti1001.eqiad.wmnet ganeti1002.eqiad.wmnet ganeti1003.eqiad.wmnet ganeti1004.eqiad.wmnet iridium.eqiad.wmnet labcontrol1001.wikimedia.org labnet1001.eqiad.wmnet labsdb1004.eqiad.wmnet labsdb1005.eqiad.wmnet labsdb1006.eqiad.wmnet labsdb1007.eqiad.wmnet labservices1001.wikimedia.org labstore1001.eqiad.wmnet labstore1002.eqiad.wmnet lithium.eqiad.wmnet logstash1001.eqiad.wmnet logstash1002.eqiad.wmnet logstash1003.eqiad.wmnet lvs1001.wikimedia.org lvs1002.wikimedia.org lvs1003.wikimedia.org lvs1004.wikimedia.org lvs1005.wikimedia.org lvs1006.wikimedia.org mc1009.eqiad.wmnet mc1010.eqiad.wmnet mc1011.eqiad.wmnet mc1012.eqiad.wmnet mc1013.eqiad.wmnet mc1014.eqiad.wmnet mc1015.eqiad.wmnet mc1016.eqiad.wmnet ms-be1001.eqiad.wmnet ms-be1003.eqiad.wmnet ms-be1005.eqiad.wmnet ms-be1008.eqiad.wmnet ms-be1013.eqiad.wmnet ms-be1014.eqiad.wmnet ms-be1015.eqiad.wmnet ms-be1021.eqiad.wmnet ms-fe1001.eqiad.wmnet ms-fe1002.eqiad.wmnet ms-fe1003.eqiad.wmnet ms-fe1004.eqiad.wmnet netmon1001.wikimedia.org notebook1002.eqiad.wmnet oresrdb1002.eqiad.wmnet osmium.eqiad.wmnet radon.wikimedia.org rdb1001.eqiad.wmnet rdb1002.eqiad.wmnet rdb1003.eqiad.wmnet rdb1004.eqiad.wmnet rdb1008.eqiad.wmnet restbase1015.eqiad.wmnet scandium.eqiad.wmnet snapshot1001.eqiad.wmnet stat1003.eqiad.wmnet terbium.eqiad.wmnet tin.eqiad.wmnet wtp1001.eqiad.wmnet wtp1002.eqiad.wmnet wtp1003.eqiad.wmnet wtp1004.eqiad.wmnet wtp1005.eqiad.wmnet wtp1006.eqiad.wmnet wtp1007.eqiad.wmnet wtp1008.eqiad.wmnet wtp1009.eqiad.wmnet wtp1010.eqiad.wmnet wtp1011.eqiad.wmnet wtp1012.eqiad.wmnet wtp1013.eqiad.wmnet wtp1014.eqiad.wmnet wtp1015.eqiad.wmnet wtp1016.eqiad.wmnet wtp1017.eqiad.wmnet wtp1018.eqiad.wmnet wtp1019.eqiad.wmnet wtp1020.eqiad.wmnet wtp1021.eqiad.wmnet wtp1022.eqiad.wmnet wtp1023.eqiad.wmnet wtp1024.eqiad.wmnet
codfw
acamar.wikimedia.org achernar.wikimedia.org auth2001.codfw.wmnet baham.wikimedia.org db2010.codfw.wmnet db2011.codfw.wmnet db2012.codfw.wmnet db2016.codfw.wmnet db2017.codfw.wmnet db2018.codfw.wmnet db2019.codfw.wmnet db2023.codfw.wmnet db2028.codfw.wmnet db2029.codfw.wmnet db2030.codfw.wmnet heze.codfw.wmnet labstore2001.codfw.wmnet labtestservices2001.wikimedia.org lvs2001.codfw.wmnet lvs2002.codfw.wmnet lvs2003.codfw.wmnet lvs2004.codfw.wmnet lvs2005.codfw.wmnet lvs2006.codfw.wmnet maps-test2001.codfw.wmnet maps-test2002.codfw.wmnet maps-test2003.codfw.wmnet maps-test2004.codfw.wmnet ms-be2011.codfw.wmnet ms-be2013.codfw.wmnet ms-be2014.codfw.wmnet ms-be2015.codfw.wmnet mw2126.codfw.wmnet restbase2002.codfw.wmnet
esams
lvs3001.esams.wmnet lvs3002.esams.wmnet lvs3003.esams.wmnet lvs3004.esams.wmnet ms-be3001.esams.wmnet
ulsfo
bast4001.wikimedia.org lvs4001.ulsfo.wmnet lvs4002.ulsfo.wmnet lvs4003.ulsfo.wmnet lvs4004.ulsfo.wmnet