A system() invocation is governed by buffer switchrate. The system() action executes only when the containing buffer gets read. With default buffer policy and switchrate, almost a second could go by before that happens.
So any process thread that fires the probe but terminates before the system() action gets a chance will escape tracing. I tried grabbing ls(1) without using stop(), for example, and got complained at every time. There's an example of deliberately stalling the system() action to foil the date(1) command by upping the switchrate. P. 136 of the Dynamic Tracing Guide (Sep 2008), part no 817-6223-12. -- This message posted from opensolaris.org _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
