a3c90994bd
Correct shellcheck rule SC2003: expr is antiquated.
Consider rewriting this using $((..)), ${} or .
Signed-off-by: Maciej Wawryk <maciejx.wawryk@intel.com>
Change-Id: I98a677cce7a1ffdfa5e1cf417a128900fba64124
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/470902
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
74 lines
1.7 KiB
Bash
Executable File
74 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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function configure_performance() {
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echo -n "Placing all CPUs in performance mode..."
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for governor in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
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echo -n performance > $governor
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done
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echo "Done"
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if [ -f "/sys/devices/system/cpu/intel_pstate/no_turbo" ]; then
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echo -n "Disabling Turbo Boost..."
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echo -n 1 > /sys/devices/system/cpu/intel_pstate/no_turbo
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echo "Done"
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fi
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echo -n "Disabling irqbalance service..."
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service irqbalance stop 2> /dev/null
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echo "Done"
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echo -n "Moving all interrupts off of core 0..."
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count=$(($(nproc) / 4))
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cpumask="e"
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for ((i=1; i<$count; i++)); do
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if [ $((i % 8)) -eq 0 ]; then
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cpumask=",$cpumask"
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fi
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cpumask="f$cpumask"
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done
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for file in /proc/irq/*/smp_affinity; do
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echo "$cpumask" > $file 2> /dev/null
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done
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echo "Done"
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echo -n "Configuring kernel blk-mq for NVMe SSDs..."
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for queue in /sys/block/nvme*n*/queue; do
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if [ -f "$queue/nomerges" ]; then
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echo "1" > $queue/nomerges
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fi
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if [ -f "$queue/io_poll" ]; then
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echo "1" > $queue/io_poll
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fi
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if [ -f "$queue/io_poll_delay" ]; then
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echo "-1" > $queue/io_poll_delay
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fi
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done
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echo "Done"
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}
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function reset_performance() {
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echo -n "Placing all CPUs in powersave mode..."
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for governor in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
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echo -n powersave > $governor
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done
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echo "Done"
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if [ -f "/sys/devices/system/cpu/intel_pstate/no_turbo" ]; then
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echo -n "Enabling Turbo Boost..."
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echo -n 0 > /sys/devices/system/cpu/intel_pstate/no_turbo
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echo "Done"
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fi
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echo -n "Enabling irqbalance service..."
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service irqbalance start 2> /dev/null
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echo "Done"
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}
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if [ "$1" = "reset" ]; then
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reset_performance
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else
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configure_performance
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fi
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