De-prioritizing a systemd-run job
cpuset again. delay setting cgroup properties
+13
-3
+13
-3
gentle.sh
+13
-3
gentle.sh
···
136
136
mkdir -p "$TMPDIR"
137
137
OUTPUT_FILE=$(mktemp --tmpdir="$TMPDIR")
138
138
139
-
# Launch systemd-run, tee stderr to file and also to terminal
140
-
"${CMD[@]}" 2> >(tee "$OUTPUT_FILE" >&2)
141
-
EXIT_CODE=$?
139
+
# Launch systemd-run in background, tee stderr to file and also to terminal
140
+
"${CMD[@]}" 2> >(tee "$OUTPUT_FILE" >&2) &
141
+
RUN_PID=$!
142
+
143
+
# Wait for scope to be created and systemd-run output to be captured
144
+
sleep 0.3
142
145
143
146
# Read output and extract scope unit name from stderr
144
147
RUN_OUTPUT=$(cat "$OUTPUT_FILE")
···
173
176
set_cgroup_property "io.weight" "default 1" "io.weight to minimum"
174
177
set_cgroup_property "io.prio.class" "idle" "io.prio.class to idle"
175
178
179
+
# Set CPU affinity (AllowedCPUs property doesn't work, set cpuset directly)
180
+
set_cgroup_property "cpuset.cpus" "$CPU_AFFINITY" "CPU affinity to $CPU_AFFINITY"
181
+
176
182
# Set CPU scheduling to batch via chrt (done pre-launch via CMD wrapping)
177
183
# Note: cpuset and scheduling policies are set via chrt -b 0 in command wrapper
178
184
# Post-launch cgroup does not support direct scheduling policy changes
179
185
fi
186
+
187
+
# Wait for the background process to finish
188
+
wait $RUN_PID
189
+
EXIT_CODE=$?
180
190
181
191
# Clean up temporary file
182
192
rm -f "$OUTPUT_FILE"