Improve wording on how latency is measured
-.TH biolatency 8 "2015-08-20" "USER COMMANDS"
+.TH biolatency 8 "2019-12-12" "USER COMMANDS"
.SH NAME
biolatency \- Summarize block device I/O latency as a histogram.
.SH SYNOPSIS
@@ -8,8 +8,8 @@ biolatency traces block device I/O (disk I/O), and records the distribution
of I/O latency (time). This is printed as a histogram either on Ctrl-C, or
after a given interval in seconds.
-The latency of the disk I/O is measured from the issue to the device to its
-completion. A \-Q option can be used to include time queued in the kernel.
+The latency of disk I/O operations is measured from when requests are issued to the device
+up to completion. A \-Q option can be used to include time queued in the kernel.
This tool uses in-kernel eBPF maps for storing timestamps and the histogram,
for efficiency.
