mark.countDown(); // go
System.out.print(" ...\n");
completion.await(); // ... done
timer.mark();
/* report */
// overall - this is throughput
System.out.format("===== %s =====\n",cmd.code);
System.out.format("%d concurrent clients (%d %ss each) [host: %s]\n", threadCnt, reqCnt, cmd.code, host);