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% FLASHSTAT(8) flashstat
# NAME
flashstat - Display flashcache statistic information
# DESCRIPTION
The purpose of the **flashstat** command is to periodically display
flashcache statistic information
# SYNOPSIS
flashstat [-h] [-i \<time Interval\>] [-C \<count\>] [-d \<device\>] [-n]
# OPTIONS
-h, --help
: Print help info
-i, --interval
: Time(second) interval, the default value is 1s
-C, --count
: Display times
-d, --device
: Flashcache device, the default device is /dev/mapper/cachedev
-n, --nocolor
: No color mode
# OUTPUT
read/s -
reads per second for cachedev
write/s -
writes per second for cachedev
diskr/s -
disk reads per second
diskw/s -
disk writes per second
ssdr/s -
ssd reads per second
ssdw/s -
ssd writes per second
uread/s -
uncached reads per second
uwrit/s -
uncached writes per second
metaw/s -
metadata ssd writes per second
clean/s -
cleanings per second
repl/s -
replacement per second
wrepl/s -
write replacement per second
hit% -
read hit percent(current hit%|total hit%)
whit% -
write hit percent(current whit%|total whit%)
dwhit% -
dirty write hit percent(current dwhit%|total dwhit%)
# SEE ALSO
*README* and other documents in **/usr/share/doc/flashcache-utils**
The flashcache source code and all documentation may be downloaded from
<https://github.com/facebook/flashcache/>.
# AUTHORS
Flashstat is developed by NinGoo <seaman.ning@gmail.com>
This man page was written by Liang Guo <guoliang@debian.org>
for Debian GNU/Linux (but may be used by others).
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