Jens, fio can display completion latency percentages via the percentile_list parameter. I can get p90 and p99 numbers for clat via percentile_list=90:99. Is there a way to get the overall latency for percentile? I'm interested in the total latency measurements for p90 and p99 while doing some measurements on the persistent memory block driver and playing around using DMA engines for transfer. -- Dave Jiang Software Engineer, Data Center Group Intel Corp. dave.jiang@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html