This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
My understanding is each line represents the GC. There are multiple GC at 21.50 with few milli difference. IS my understanding correct? Is there a way that we can indicate in the GC params, so that the GC runs are reguar intervals?