Hi, I'm using fio 2.1.7 and I have the following fio configuration: #FIO CONFIGURATION [globals] name=fio_write rw=write size=5G ioengine=libaio direct=1 unlink=0 bs=4096 iodepth=128 scramble_buffers=1 group_reporting gtod_reduce=0 norandommap thread randrepeat=0 ramp_time=0s random_generator=tausworthe [thread 0] filename=/dev/md0 My result shows: /fio fioc.cfg fio_write: (g=0): rw=write, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=128 fio-2.1.7 Starting 1 thread Jobs: 1 (f=1): [W] [100.0% done] [0KB/799.8MB/0KB /s] [0/205K/0 iops] [eta 00m:00s] fio_write: (groupid=0, jobs=1): err= 0: pid=13889: Mon May 19 15:29:55 2014 write: io=5120.0MB, bw=821510KB/s, iops=205377, runt= 6382msec <snip> Run status group 0 (all jobs): WRITE: io=5120.0MB, aggrb=821510KB/s, minb=821510KB/s, maxb=821510KB/s, mint=6382msec, maxt=6382msec Note that the runtime was about 6 seconds. If I change the ramp_time to 1s (ramp_time=1s) the test runs for 12-13 seconds (about 2x) and writes much more data than size: fio_write: (g=0): rw=write, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=128 fio-2.1.7 Starting 1 thread Jobs: 1 (f=1): [W] [100.0% done] [0KB/626.1MB/0KB /s] [0/160K/0 iops] [eta 00m:00s] fio_write: (groupid=0, jobs=1): err= 0: pid=15860: Tue May 20 08:28:35 2014 write: io=9406.3MB, bw=717344KB/s, iops=179326, runt= 13427msec <snip> Run status group 0 (all jobs): WRITE: io=9406.3MB, aggrb=717343KB/s, minb=717343KB/s, maxb=717343KB/s, mint=13427msec, maxt=13427msec The time remaining counts down to 0 and then the test keeps running - it seems like the test may be running a second iteration. What am I doing incorrectly? Thanks, Devon -- 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
