From e0bf43d64ed01285321bf6c3a308f699c5483efc Mon Sep 17 00:00:00 2001
From: Tino Reichardt <milky-zfs@mcmilk.de>
Date: Sat, 12 Oct 2024 09:54:50 +0200
Subject: [PATCH] ZTS: Make use of optimal CPU pinning

With CPU pinning, we should get some speedup because of better
cpu cache re-use.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #16641
---
 .github/workflows/scripts/qemu-5-setup.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/scripts/qemu-5-setup.sh b/.github/workflows/scripts/qemu-5-setup.sh
index 5034c1896..bc40e8894 100755
--- a/.github/workflows/scripts/qemu-5-setup.sh
+++ b/.github/workflows/scripts/qemu-5-setup.sh
@@ -18,10 +18,12 @@ sudo virsh undefine openzfs
 VMs=2
 CPU=2
 
-# definitions of per operating system
+# cpu pinning
+CPUSET=("0,1" "2,3")
+
 case "$OS" in
-  # FreeBSD can't be optimized via ksmtuned
   freebsd*)
+    # FreeBSD can't be optimized via ksmtuned
     RAM=6
     ;;
   *)
@@ -75,6 +77,7 @@ EOF
     --cpu host-passthrough \
     --virt-type=kvm --hvm \
     --vcpus=$CPU,sockets=1 \
+    --cpuset=${CPUSET[$((i-1))]} \
     --memory $((1024*RAM)) \
     --memballoon model=virtio \
     --graphics none \