From cd01c1a4ceb6c365f182cc8f7b7f73b2ded26694 Mon Sep 17 00:00:00 2001
From: kirill lykov <lykov.kirill@gmail.com>
Date: Tue, 21 Jun 2022 18:28:15 +0100
Subject: [PATCH] Add profile option to net scripts (#25624)

* add image option to cloud CreateInstaces

* add script to install perf

* add profile option to gce.sh

* add profile option for net.sh start

* Revert "add image option to cloud CreateInstaces"

This reverts commit fd63991861e632ae87e79281bca63a0f8173e201.

* remove imageName from gce.sh

* fix for gce.sh

* add comments on permissions setup

* remove profile option for gce.sh

* remove short arg
---
 net/gce.sh                  |  1 +
 net/net.sh                  | 10 +++++++++-
 net/scripts/install-perf.sh | 17 +++++++++++++++++
 3 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100755 net/scripts/install-perf.sh

diff --git a/net/gce.sh b/net/gce.sh
index 8802891674..6c9e9b357f 100755
--- a/net/gce.sh
+++ b/net/gce.sh
@@ -807,6 +807,7 @@ $(
     install-libssl-compatability.sh \
     install-redis.sh \
     install-rsync.sh \
+    install-perf.sh \
     localtime.sh \
     network-config.sh \
     remove-docker-interface.sh \
diff --git a/net/net.sh b/net/net.sh
index 8a04a362cc..418716c47b 100755
--- a/net/net.sh
+++ b/net/net.sh
@@ -193,9 +193,13 @@ build() {
       buildVariant=--debug
     fi
 
+    if $profileBuild; then
+      profilerFlags="RUSTFLAGS='-C force-frame-pointers=y -g ${RUSTFLAGS}'"
+    fi
+
     $MAYBE_DOCKER bash -c "
       set -ex
-      scripts/cargo-install-all.sh farf $buildVariant --validator-only
+      $profilerFlags scripts/cargo-install-all.sh farf $buildVariant --validator-only
     "
   )
 
@@ -783,6 +787,7 @@ maybeAllowPrivateAddr=""
 maybeAccountsDbSkipShrink=""
 maybeSkipRequireTower=""
 debugBuild=false
+profileBuild=false
 doBuild=true
 gpuMode=auto
 netemPartition=""
@@ -869,6 +874,9 @@ while [[ -n $1 ]]; do
     elif [[ $1 = --debug ]]; then
       debugBuild=true
       shift 1
+    elif [[ $1 = --profile ]]; then
+      profileBuild=true
+      shift 1
     elif [[ $1 = --partition ]]; then
       netemPartition=$2
       shift 2
diff --git a/net/scripts/install-perf.sh b/net/scripts/install-perf.sh
new file mode 100755
index 0000000000..4d25cf1884
--- /dev/null
+++ b/net/scripts/install-perf.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+#
+# perf setup
+#
+set -ex
+
+[[ $(uname) = Linux ]] || exit 1
+[[ $USER = root ]] || exit 1
+
+# install perf
+apt-get --assume-yes install linux-tools-common linux-tools-generic "linux-tools-$(uname -r)"
+
+# setup permissions
+# Impose no scope and access restrictions on using perf_events performance monitoring
+echo -1 | tee /proc/sys/kernel/perf_event_paranoid
+# Allow recording kernel reference relocation symbol to avoid skewing symbol resolution if relocation was used
+echo 0 | tee /proc/sys/kernel/kptr_restrict