Filesystem latencies with fsstat.
After my blog entry about showing latencies at disk level, I want to highlight another tool that is now able to display latencies, just somewhat up the layers (or layer, given a blatant layering violation is in place ). The
fsstat command got a
-l option. With this tool you can check latencies from the perspective of the filesystem. It does so for read, write and readdir operations. It’s really simple to use:
I don’t use
fsstat as frequent as
iostat, nevertheless a really useful addition from my perspective.