1What: /sys/block/<device>/iosched/target_latency 2Date: March 2012 3contact: Tao Ma <boyu.mt@taobao.com> 4Description: 5 The /sys/block/<device>/iosched/target_latency only exists 6 when the user sets cfq to /sys/block/<device>/scheduler. 7 It contains an estimated latency time for the cfq. cfq will 8 use it to calculate the time slice used for every task. 9