On 9/18/23 12:54, Jay Han wrote:
Hello, I am seeing a stiff delta between the fio clat vs blktrace data and wondering how fio clat is measured in terms of the I/O processing step. In blktrace, I measured the time delta between the complete(C action) and issued(D action) per LBA basis. Can you tell me how fio clat is calculated please? Thank you, Jay.
Here is an extended discussion of fio's latency calculations: https://github.com/vincentkfu/fio-blog/wiki/How-does-fio-measure-latency
