mirror of https://github.com/tytydraco/ktweak
Initialize as a system script
Signed-off-by: Tyler Nijmeh <tylernij@gmail.com>latency
Tyler Nijmeh
4 years ago
parent
ba91a83846
commit
d65b2ab4f9
@ -1,6 +1,9 @@
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#!/system/bin/sh
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# Written by Draco (tytydraco @ GitHub)
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ui_print "[*] Setting executable permissions..."
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set_perm_recursive "$MODPATH/systen/bin" root root 0777 0755
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# Do install-time script execution
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sh "$MODPATH/service.sh"
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echo "[*] Executed service script during live boot. Reboot is not needed."
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sh "$MODPATH/system/bin/ktweak"
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echo "[*] Executed service script during live boot. Reboot is not needed."
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@ -0,0 +1,193 @@
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#!/system/bin/sh
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# Written by Draco (tytydraco @ GitHub)
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# Safely apply sysctl adjustment
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ctl() {
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# Fetch the current key value
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local curval=`sysctl -e -n "$1"`
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# Bail out if sysctl key does not exist
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if [[ -z "$curval" ]]
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then
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echo "[!] Key $1 does not exist. Skipping."
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return 1
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fi
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# Bail out if sysctl is already set
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if [[ "$curval" == "$2" ]]
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then
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echo "[*] Key $1 is already set to $2. Skipping."
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return 0
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fi
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# Set the new value
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sysctl -w "$1"="$2" &> /dev/null
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# Bail out if write fails
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if [[ $? -ne 0 ]]
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then
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echo "[!] Failed to write $2 to $1. Skipping."
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return 1
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fi
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}
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# Safely write value to file
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write() {
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# Bail out if file does not exist
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if [[ ! -f "$1" ]]
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then
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echo "[!] File $1 does not exist. Skipping."
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return 1
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fi
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# Fetch the current key value
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local curval=`cat "$1" 2> /dev/null`
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# Bail out if value is already set
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if [[ "$curval" == "$2" ]]
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then
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echo "[*] File $1 is already set to $2. Skipping."
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return 0
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fi
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# Write the new value
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echo "$2" > "$1"
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# Bail out if write fails
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if [[ $? -ne 0 ]]
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then
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echo "[!] Failed to write $2 to $1. Skipping."
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return 1
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fi
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}
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# Setup ZRAM to half of the available RAM
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setup_zram() {
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memsize=`cat /proc/meminfo | grep "MemTotal" | awk '{print $2}'`
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halfmemsize=`echo "$(($memsize/2))"`
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swapoff /dev/block/zram0
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write /sys/block/zram0/reset 1
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write /sys/block/zram0/disksize "${halfmemsize}KB"
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mkswap /dev/block/zram0
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swapon /dev/block/zram0
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}
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# Print device information prior to execution
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echo "[*] ----- Device Information -----"
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# Kernel and device information
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uname -a
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# Scheduler feature check
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[[ -f "/sys/kernel/debug/sched_features" ]] && echo "[*] Scheduler features exposed."
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# CPU boost check
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[[ -d "/sys/module/cpu_boost" ]] && echo "[*] CAF CPU boost detected."
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# ZRAM support state
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[[ -d "/sys/block/zram0" ]] && echo "[*] ZRAM supported."
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echo "[*] ------------------------------"
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# Kernel
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ctl kernel.perf_cpu_time_max_percent 5
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ctl kernel.randomize_va_space 0
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ctl kernel.sched_autogroup_enabled 1
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ctl kernel.sched_enable_thread_grouping 1
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ctl kernel.sched_child_runs_first 1
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ctl kernel.sched_downmigrate "40 40"
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ctl kernel.sched_upmigrate "60 60"
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ctl kernel.sched_group_downmigrate 40
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ctl kernel.sched_group_upmigrate 60
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ctl kernel.sched_tunable_scaling 0
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ctl kernel.sched_latency_ns 10000000
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ctl kernel.sched_min_granularity_ns 1000000
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ctl kernel.sched_migration_cost_ns 1000000
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ctl kernel.sched_min_task_util_for_boost 40
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ctl kernel.sched_min_task_util_for_colocation 20
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ctl kernel.sched_nr_migrate 64
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ctl kernel.sched_rt_runtime_us 1000000
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ctl kernel.sched_schedstats 0
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ctl kernel.sched_wakeup_granularity_ns 5000000
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ctl kernel.timer_migration 0
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# Net
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ctl net.ipv4.tcp_ecn 1
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ctl net.ipv4.tcp_fastopen 3
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ctl net.ipv4.tcp_slow_start_after_idle 0
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ctl net.ipv4.tcp_syncookies 0
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ctl net.ipv4.tcp_timestamps 0
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# VM
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ctl vm.compact_unevictable_allowed 0
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ctl vm.dirty_background_ratio 3
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ctl vm.dirty_ratio 30
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ctl vm.dirty_expire_centisecs 1000
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ctl vm.dirty_writeback_centisecs 0
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ctl vm.extfrag_threshold 750
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ctl vm.oom_dump_tasks 0
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ctl vm.page-cluster 0
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ctl vm.reap_mem_on_sigkill 1
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ctl vm.stat_interval 10
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ctl vm.swappiness 80
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ctl vm.vfs_cache_pressure 200
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ctl vm.watermark_scale_factor 100
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# Scheduler features
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if [[ -f "/sys/kernel/debug/sched_features" ]]
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then
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write /sys/kernel/debug/sched_features NO_GENTLE_FAIR_SLEEPER
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write /sys/kernel/debug/sched_features NEXT_BUDDY
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write /sys/kernel/debug/sched_features NO_STRICT_SKIP_BUDDY
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write /sys/kernel/debug/sched_features NO_NONTASK_CAPACITY
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write /sys/kernel/debug/sched_features TTWU_QUEUE
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fi
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# CPU
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for cpu in /sys/devices/system/cpu/cpu*/cpufreq/
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do
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write "${cpu}scaling_min_freq" `cat "${cpu}cpuinfo_min_freq"`
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write "${cpu}scaling_max_freq" `cat "${cpu}cpuinfo_max_freq"`
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avail_govs=`cat "${cpu}scaling_available_governors"`
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[[ "$avail_govs" == *"interactive"* ]] && write "${cpu}scaling_governor" interactive
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[[ "$avail_govs" == *"schedutil"* ]] && write "${cpu}scaling_governor" schedutil
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# Interactive-specific tweaks
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if [[ -d "${cpu}interactive" ]]
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then
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write "${cpu}interactive/min_sample_time" 10000
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write "${cpu}interactive/go_hispeed_load" 80
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write "${cpu}interactive/hispeed_freq" `cat "${cpu}cpuinfo_max_freq"`
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fi
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# Schedutil-specific tweaks
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if [[ -d "${cpu}schedutil" ]]
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then
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write "${cpu}schedutil/up_rate_limit_us" 10000
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write "${cpu}schedutil/down_rate_limit_us" 10000
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write "${cpu}schedutil/hispeed_load" 80
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write "${cpu}schedutil/hispeed_freq" `cat "${cpu}cpuinfo_max_freq"`
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fi
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done
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# CAF CPU boost
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if [[ -d "/sys/module/cpu_boost" ]]
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then
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write "/sys/module/cpu_boost/parameters/input_boost_freq" 1400000
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write "/sys/module/cpu_boost/parameters/input_boost_ms" 250
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fi
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# I/O
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for queue in /sys/block/*/queue/
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do
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write "${queue}iostats" 0
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write "${queue}read_ahead_kb" 0
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write "${queue}nr_requests" 512
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write "${queue}scheduler" noop
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write "${queue}scheduler" none
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done
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# ZRAM
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[[ -d "/sys/block/zram0" ]] && setup_zram &
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echo "[*] Done."
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