[Nexus 5 Original Android Development] franciscofranco:
Here's the tunables list that I promissed. This is Java code but you can easily understand if you know English. Someof these paths are not for the Nexus 5, but I really can't be arsed to filter it all. Enjoy.

public final class Files {
public static final String TIME_IN_STATE = "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state";
public static final String CPU_MAX_FREQUENCY = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq";
public static final String CPU_MIN_FREQUENCY = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq";
public static final String CPU_CURRENT_GOVERNOR = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor";
public static final String CPU_GOVERNORS = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors";
public static final String CPU_VOLTAGES = "/sys/devices/system/cpu/cpu0/cpufreq/UV_mV_table";
public static final String GPU_KGSL = "/sys/class/kgsl/kgsl-3d0/";
public static final String GPU_MAKO_MAXCLK = "/sys/class/kgsl/kgsl-3d0/max_gpuclk";
public static final String GPU_MAKO_FREQS = "/sys/class/kgsl/kgsl-3d0/gpu_available_frequencies";
public static final String GOVERNOR_TUNABLES = "/sys/devices/system/cpu/cpufreq/";
public static final String HOTPLUG_CONTROL = "/sys/class/misc/mako_hotplug_control/";
public static final String HOTPLUG_FIRST_LEVEL = "/sys/class/misc/mako_hotplug_control/first_level";
public static final String HOTPLUG_CORES_ON_TOUCH = "/sys/class/misc/mako_hotplug_control/cores_on_touch";
public static final String HOTPLUG_SUSPEND_FREQUENCY = "/sys/class/misc/mako_hotplug_control/suspend_frequency";
public static final String IO_TUNABLES = "/sys/block/mmcblk0/queue/iosched/";
public static final String IO_SCHEDULER = "/sys/block/mmcblk0/queue/scheduler";
public static final String RGB_MULTIPLIERS_MAKO = "/sys/devices/platform/kcal_ctrl.0/kcal";
public static final String MAKO_RGB_APPLY = "/sys/devices/platform/kcal_ctrl.0/kcal_ctrl";
public static final String RED_GRAYS = "/sys/class/misc/gammacontrol/red_greys";
public static final String RED_MIDS = "/sys/class/misc/gammacontrol/red_mids";
public static final String RED_BLACKS = "/sys/class/misc/gammacontrol/red_blacks";
public static final String RED_WHITES = "/sys/class/misc/gammacontrol/red_whites";
public static final String GREEN_GRAYS = "/sys/class/misc/gammacontrol/green_greys";
public static final String GREEN_MIDS = "/sys/class/misc/gammacontrol/green_mids";
public static final String GREEN_BLACKS = "/sys/class/misc/gammacontrol/green_blacks";
public static final String GREEN_WHITES = "/sys/class/misc/gammacontrol/green_whites";
public static final String BLUE_GRAYS = "/sys/class/misc/gammacontrol/blue_greys";
public static final String BLUE_MIDS = "/sys/class/misc/gammacontrol/blue_mids";
public static final String BLUE_BLACKS = "/sys/class/misc/gammacontrol/blue_blacks";
public static final String BLUE_WHITES = "/sys/class/misc/gammacontrol/blue_whites";
public static final String SATURATION = "/sys/class/misc/gammacontrol/saturation";
public static final String CONTRAST = "/sys/class/misc/gammacontrol/contrast";
public static final String BRIGHTNESS = "/sys/class/misc/gammacontrol/brightness";
public static final String RGB_MULTIPLIERS_TUNA = "/sys/class/misc/colorcontrol/multiplier";
public static final String GAMMA_TUNA = "/sys/class/misc/colorcontrol/v1_offset";
public static final String GPU_UP_THRESHOLD = "/sys/module/msm_kgsl_core/parameters/up_threshold";
public static final String GPU_DOWN_THRESHOLD = "/sys/module/msm_kgsl_core/parameters/down_threshold";
public static final String GPU_SAMPLE_TIME_MS = "/sys/module/msm_kgsl_core/parameters/sample_time_ms";
public static final String VIBRATION_AMP = "/sys/class/timed_output/vibrator/amp";
public static final String LOGCAT = "/sys/module/logger/parameters/enabled";
public static final String VOLUME_BOOST = "/sys/class/misc/soundcontrol/volume_boost";
public static final String HEADSET_BOOST = "/sys/class/misc/soundcontrol/headset_boost";
public static final String MIC_GAIN = "/sys/class/misc/soundcontrol/mic_gain";
public static final String MIC_BOOST = "/sys/class/misc/soundcontrol/mic_boost";
public static final String SPEAKER_BOOST = "/sys/class/misc/soundcontrol/speaker_boost";
public static final String CONGESTION_ALGORITHM = "net.ipv4.tcp_available_congestion_control";
public static final String CONGESTION_ALGORITHM_APPLY = "net.ipv4.tcp_congestion_control";
public static final String TUNA_TEMP = "/sys/devices/platform/omap/omap_temp_sensor.0/temperature";
public static final String MAKO_TEMP = "/sys/devices/virtual/thermal/thermal_zone7/temp";
public static final String GROUPER_TEMP = "/sys/devices/platform/tegra-i2c.4/i2c-4/4-004c/temperature";
public static final String FLO_TEMP = "/sys/devices/virtual/thermal/thermal_zone0/temp";
public static final String HAMMERHEAD_TEMP = "/sys/devices/virtual/thermal/thermal_zone7/temp";
public static final String OMAP_GAMMA = "/sys/devices/platform/omapdss/manager0/gamma";
public static final String TRINITY_CONTRAST = "/sys/module/panel_s6e8aa0/parameters/contrast";
public static final String ADAPTIVE_BRIGHTNESS = "/sys/class/backlight/s6e8aa0/acl_set";
public static final String HH_RED_POSITIVE = "/sys/module/dsi_panel/kgamma_rp";
public static final String HH_RED_NEGATIVE = "/sys/module/dsi_panel/kgamma_rn";
public static final String HH_GREEN_POSITIVE = "/sys/module/dsi_panel/kgamma_gp";
public static final String HH_GREEN_NEGATIVE = "/sys/module/dsi_panel/kgamma_gn";
public static final String HH_BLUE_POSITIVE = "/sys/module/dsi_panel/kgamma_bp";
public static final String HH_BLUE_NEGATIVE = "/sys/module/dsi_panel/kgamma_bn";
public static final String HH_WHITE_POINT = "/sys/module/dsi_panel/kgamma_w";
public static final String HH_GAMMA_SEND = "/sys/module/dsi_panel/kgamma_send";
}