Looking at the sources: The 'blocked' column in vmstat is the sum of (struct vmtotal).t_dw /* jobs in ``disk wait'' (neg priority) */ and (struct vmtotal).t_pw /* jobs in page wait */
'systat -v' splits these into two fields (Proc:d and Proc:p) as does sysctl vm.vmtotal It's difficult to map these counters onto ps output. State 'D' and 'W' should catch most of them. You might find it useful looking through the MWCHAN column for anything looking suspicious. -- Peter Jeremy
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