From d4c38cb29ac12d91bb9f511889a4c76b62269623 Mon Sep 17 00:00:00 2001
From: not-matthias <matthias@codspeed.io>
Date: Thu, 5 Jun 2025 17:08:27 +0200
Subject: [PATCH] feat: run benchmark with systemd (for optional cpu isolation)

---
 Cargo.toml                           | 2 +-
 src/run/runner/wall_time/perf/mod.rs | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 22b529c9..e5a998b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,7 +52,7 @@ object = "0.36.7"
 linux-perf-data = "0.11.0"
 debugid = "0.8.0"
 memmap2 = "0.9.5"
-nix = { version = "0.29.0", features = ["fs"] }
+nix = { version = "0.29.0", features = ["fs", "user"] }
 futures = "0.3.31"
 
 [target.'cfg(target_os = "linux")'.dependencies]
diff --git a/src/run/runner/wall_time/perf/mod.rs b/src/run/runner/wall_time/perf/mod.rs
index 0bc1c1c3..cff9b2ac 100644
--- a/src/run/runner/wall_time/perf/mod.rs
+++ b/src/run/runner/wall_time/perf/mod.rs
@@ -108,13 +108,16 @@ impl PerfRunner {
                 ""
             }
         };
+        let user = nix::unistd::User::from_uid(nix::unistd::Uid::current())?.unwrap();
         cmd.args([
             "-c",
             &format!(
-                "perf record {quiet_flag} --user-callchains --freq=999 --switch-output --control=fifo:{},{} --delay=-1 -g --call-graph={cg_mode} --output={} -- {bench_cmd}",
+                "perf record {quiet_flag} --user-callchains --freq=999 --switch-output --control=fifo:{},{} --delay=-1 -g --call-graph={cg_mode} --output={} -- \
+                sudo systemd-run --scope --slice=codspeed.slice --same-dir -- runuser -u {} -- {bench_cmd}",
                 perf_fifo.ctl_fifo_path.to_string_lossy(),
                 perf_fifo.ack_fifo_path.to_string_lossy(),
-                perf_file.path().to_string_lossy()
+                perf_file.path().to_string_lossy(),
+                user.name
             ),
         ]);
         debug!("cmd: {:?}", cmd);