I think there may be an issue with the THP configuration in the wiki.
I was having issues with Redis on Ubuntu:
Your Redis network connection is performing extremely poorly. Last RTT readings were [96585, 101554, 97189, 99769, 94618], ideally these should be < 1000. Ensure Redis is running in the same AZ or dat
I believed that THP was already disabled (from following the wiki) - but turned out it was still enabled 
. Disabling THP ended up resolving the above for me iirc (late last year).
Ubuntu 24.04 LTS (following current wiki):
cat /sys/kernel/mm/transparent_hugepage/enabled
# output:
# [always] madvise never
echo 'sys.kernel.mm.transparent_hugepage.enabled=never' > /etc/sysctl.d/10-huge-pages.conf
cat /etc/sysctl.d/10-huge-pages.conf
# output:
# sys.kernel.mm.transparent_hugepage.enabled=never
sudo sysctl --system
# output:
* Applying /usr/lib/sysctl.d/10-apparmor.conf ...
* Applying /etc/sysctl.d/10-bufferbloat.conf ...
* Applying /etc/sysctl.d/10-console-messages.conf ...
* Applying /etc/sysctl.d/10-huge-pages.conf ...
* Applying /etc/sysctl.d/10-ipv6-privacy.conf ...
* Applying /etc/sysctl.d/10-kernel-hardening.conf ...
* Applying /etc/sysctl.d/10-magic-sysrq.conf ...
* Applying /etc/sysctl.d/10-map-count.conf ...
* Applying /etc/sysctl.d/10-network-security.conf ...
* Applying /etc/sysctl.d/10-ptrace.conf ...
* Applying /etc/sysctl.d/10-zeropage.conf ...
* Applying /usr/lib/sysctl.d/50-pid-max.conf ...
* Applying /etc/sysctl.d/99-cloudimg-ipv6.conf ...
* Applying /usr/lib/sysctl.d/99-protect-links.conf ...
* Applying /etc/sysctl.d/99-sysctl.conf ...
* Applying /etc/sysctl.conf ...
kernel.apparmor_restrict_unprivileged_userns = 1
net.core.default_qdisc = fq_codel
kernel.printk = 4 4 1 7
net.ipv6.conf.all.use_tempaddr = 2
net.ipv6.conf.default.use_tempaddr = 2
kernel.kptr_restrict = 1
kernel.sysrq = 176
vm.max_map_count = 1048576
net.ipv4.conf.default.rp_filter = 2
net.ipv4.conf.all.rp_filter = 2
kernel.yama.ptrace_scope = 1
vm.mmap_min_addr = 65536
kernel.pid_max = 4194304
net.ipv6.conf.all.use_tempaddr = 0
net.ipv6.conf.default.use_tempaddr = 0
fs.protected_fifos = 1
fs.protected_hardlinks = 1
fs.protected_regular = 2
fs.protected_symlinks = 1
cat /sys/kernel/mm/transparent_hugepage/enabled
# output:
# [always] madvise never
AlmaLinux 10 (following current wiki):
cat /sys/kernel/mm/transparent_hugepage/enabled
# output:
# [always] madvise never
echo 'sys.kernel.mm.transparent_hugepage.enabled=never' > /etc/sysctl.d/10-huge-pages.conf
cat /etc/sysctl.d/10-huge-pages.conf
# output:
# sys.kernel.mm.transparent_hugepage.enabled=never
sudo sysctl --system
# output:
* Applying /usr/lib/sysctl.d/10-default-yama-scope.conf ...
* Applying /etc/sysctl.d/10-huge-pages.conf ...
* Applying /usr/lib/sysctl.d/10-map-count.conf ...
* Applying /usr/lib/sysctl.d/50-coredump.conf ...
* Applying /usr/lib/sysctl.d/50-default.conf ...
* Applying /usr/lib/sysctl.d/50-libkcapi-optmem_max.conf ...
* Applying /usr/lib/sysctl.d/50-pid-max.conf ...
* Applying /usr/lib/sysctl.d/50-redhat.conf ...
* Applying /etc/sysctl.d/99-sysctl.conf ...
* Applying /etc/sysctl.conf ...
kernel.yama.ptrace_scope = 0
vm.max_map_count = 1048576
kernel.core_pattern = |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h
kernel.core_pipe_limit = 16
fs.suid_dumpable = 2
kernel.sysrq = 16
kernel.core_uses_pid = 1
net.ipv4.conf.default.rp_filter = 2
net.ipv4.conf.eth0.rp_filter = 2
net.ipv4.conf.eth1.rp_filter = 2
net.ipv4.conf.lo.rp_filter = 2
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.eth0.accept_source_route = 0
net.ipv4.conf.eth1.accept_source_route = 0
net.ipv4.conf.lo.accept_source_route = 0
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.eth0.promote_secondaries = 1
net.ipv4.conf.eth1.promote_secondaries = 1
net.ipv4.conf.lo.promote_secondaries = 1
net.ipv4.ping_group_range = 0 2147483647
net.core.default_qdisc = fq_codel
fs.protected_hardlinks = 1
fs.protected_symlinks = 1
fs.protected_regular = 1
fs.protected_fifos = 1
net.core.optmem_max = 81920
kernel.pid_max = 4194304
kernel.kptr_restrict = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.eth0.rp_filter = 1
net.ipv4.conf.eth1.rp_filter = 1
net.ipv4.conf.lo.rp_filter = 1
cat /sys/kernel/mm/transparent_hugepage/enabled
# output:
# [always] madvise never
Perhaps this would be a suitable for the wiki? Seemed to work on Ubuntu 24.04 and AlmaLinux 10 from testing now:
echo 'w /sys/kernel/mm/transparent_hugepage/enabled - - - - never' | sudo tee /etc/tmpfiles.d/10-huge-pages.conf
sudo systemd-tmpfiles --create /etc/tmpfiles.d/10-huge-pages.conf
To confirm:
cat /sys/kernel/mm/transparent_hugepage/enabled
Expected output:
always madvise [never]