Display flashcache statistic information
The purpose of the flashstat command is to periodically display flashcache statistic information
flashstat [-h] [-i <time Interval>] [-C <count>] [-d <device>] [-n]
-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
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%)
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/>.
Flashstat is developed by NinGoo <[email protected]>
This man page was written by Liang Guo <[email protected]> for Debian GNU/Linux (but may be used by others).