/etc/sysctl.conf
vm.dirty_writeback_centisecs = 1500 vm.dirty_expire_centisecs = 9000 vm.dirty_background_ratio = 20 vm.dirty_ratio = 80 vm.swappiness = 5Who is waking up the disks?
echo 1 > /proc/sys/vm/block_dumpand monitor with
dmesg
/sys
echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor echo powersave > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
100 Mbps
ethtool -s eth0 advertise 0x008; # 0x020 for 1 Gbps