Gavin Hamill <gdh@xxxxxxxxxxxxx> writes: > There's truss installed which seems to do the same as strace on > Linux... and here's a wildly non-scientific glance.. I watched the > 'topas' output (top for AIX) , identified a PID that was doing a lot of > work, then attached truss to that pid. In addition to lots of send > (), recv() and lseek()s... Those are good, they represent real work getting done. > about once a minute I saw hundreds of calls > to __semop() interspersed with _select(), This is not good. Did the semop storms coincide with visible slowdown? (I'd assume so, but you didn't actually say...) regards, tom lane
