hello fio group i am new to storage and block world. I have just started to learn about them. i am exploring FIO to use it for testing. I could not able to interpret the output files properly. i need some help on understanding the format of output saved to log files. Is there any difference between the output log files saved by FIO from 2.0.8 to 2.0.15 ? I am trying to interpret slat,clat,lat files output. i have given a sample FIO run in 2.0.8. Below is the sample format. i am running this on RAID 1. 2.0.8 latency log: 18, 18288, 1, 4096 18, 10353, 0, 4096 19, 10256, 1, 4096 19, 793, 0, 4096 20, 1747, 1, 4096 20, 1700, 0, 4096 i would like to know what does the first column and third column represent in the above lines. i can understand 2 column and last column represent latency and block size. 2.0.15 latency log : 193, 29701742568, 1, 4096 193, 29701742585, 1, 4096 193, 29701742595, 1, 4096 193, 29701742600, 1, 4096 193, 29701742605, 1, 4096 193, 29701742610, 1, 4096 193, 29701742615, 1, 4096 193, 29701742620, 1, 4096 193, 29701742625, 1, 4096 193, 29701742630, 1, 4096 When i run 2.0.15 i see the latency value as too big(is this value in usec and value in 2.0.18 in msec... but fio output says 2.0.8 is in usec and 2.0.15 as in msec) and third column is always 1. could some one please help me in understanding the above differences. or point me to some source where these are elaborated. thanks in advance. regards sampath -- 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
