tmp: Stop tweaking turbo/pstates in perf tests

Writing to the noturbo sysfs immediately locks up the entire instance,
so stop doing this for now.

Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

tools/devtool

@@ -743,12 +743,6 @@ cmd_test() {
 
     env |grep -P "^(AWS_EMF_|BUILDKITE|CODECOV_)" > env.list
     if [[ $performance_tweaks -eq 1 ]]; then
-      if [[ "$(uname --machine)" == "x86_64" ]]; then
-        say "Detected CI and performance tests, tuning CPU frequency scaling and idle states for reduced variability"
-
-        apply_performance_tweaks
-      fi
-
       # It seems that even if the tests using huge pages run sequentially on ag=1 agents, right-sizing the huge pages
       # pool to the total number of huge pages used across all tests results in spurious failures with pool depletion
       # anyway (something else on the host seems to be stealing our huge pages, and we cannot "ear mark" them for
@@ -799,10 +793,6 @@ cmd_test() {
 
     # undo performance tweaks (in case the instance gets recycled for a non-perf test)
     if [[ $performance_tweaks -eq 1 ]]; then
-      if [[ "$(uname --machine)" == "x86_64" ]]; then
-        unapply_performance_tweaks
-      fi
-
       echo $huge_pages_old |sudo tee /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages >/dev/null
     fi