Hi,
Lots of writing to the disks or lots of modified data?
H = number of buffers holding data that has been modified but not yet written
to disk exceeds a threshold, then a CP from high watermark is triggered
I can see, that you got some "B" letters as well, those are bad, most of the time it means,
there are too many write requestes and filer can't hadle those. NVMEM is full, but data haven't been written to the disks yet.
This will be showing a high latency issues for end user.
Intense sysstat also shows, that CPU is nearly 100%
I think command "statit" could be use in this case. (Can't remeber exact syntax at the moment)
Br.
Ismo