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authorLuke Shumaker <lukeshu@lukeshu.com>2018-07-12 00:41:28 -0400
committerLuke Shumaker <lukeshu@lukeshu.com>2018-08-21 00:51:06 -0400
commit386c4d38702b2643c09d8db7d7851a39f8798406 (patch)
tree3295403d934ffeb6bcbd1837d90b090fc2c676e8 /systemd/system
parente3bb3556afb3a612a724095614fade0863a1a667 (diff)
Add NUMA support and vCPU pinning
Diffstat (limited to 'systemd/system')
-rwxr-xr-xsystemd/system/qemu22
1 files changed, 21 insertions, 1 deletions
diff --git a/systemd/system/qemu b/systemd/system/qemu
index 475ec10..324154b 100755
--- a/systemd/system/qemu
+++ b/systemd/system/qemu
@@ -2,6 +2,8 @@
shopt -s lastpipe
set -euE -o pipefail
+declare -A vcpu2cpulist
+numactl=()
source "/etc/conf.d/qemu.d/$1"
args+=(
-name "$1",debug-threads=on
@@ -11,7 +13,25 @@ args+=(
-serial file:"/dev/stdout"
-daemonize
)
+
{
- qemu-system-"${system}" "${args[@]}"
+ numactl "${numactl[@]}" -- qemu-system-"${system}" "${args[@]}"
+
+ if [[ ${#vcpu2cpulist[@]} -gt 0 ]]; then
+ declare -A vcpu2tid
+ while read -r line; do
+ if [[ $line != ?' CPU #'*:*thread_id=* ]]; then
+ continue
+ fi
+ vcpu=${line#?' CPU #'}; vcpu=${vcpu%%:*}
+ tid=${line#thread_id=}; tid=${tid%% *}
+ vcpu2tid[$vcpu]=$tid
+ done < <(socat STDIO UNIX-CONNECT:"/run/qemu-$1/monitor.sock" <<<'info cpus')
+
+ for vcpu in "${!vcpu_pins[@]}"; do
+ taskset --cpu-list --pid -- "${vcpu2cpulist[@]}" "${vcpu2tid[$vcpu]}"
+ done
+ fi
+
systemd-notify --ready
} | exec cat