[MonetDB-users] nanosleep?

I am running a query, similar to this: SELECT distinct extract(day from time), extract (month from time) from T; The query takes a long time because the table T has over 280 Million records. However I was curious to run an strace on the mserver5 process and I notced "nanosleep". Is the process sleeping or waiting? strace -p 25984 Process 25984 attached - interrupt to quit restart_syscall(<... resuming interrupted call ...>) = 0 nanosleep({5, 0}, {5, 0}) = 0 nanosleep({5, 0}, {5, 0}) = 0 nanosleep({5, 0}, {5, 0}) = 0