Hello to all, this is actually great thread. I discovered wonderful fio before two days during seeking for tool, which allows me to simulate typical workload with DPX files playback and recording (one file per frame). I'm playing with it today and slowly getting into options. By coincidence, i subscribed to this list to ask almost same question as Alan and found this first thread.. :-) Reusing of generated frames (file sequences) between write and read jobs is also important for me and is exactly thing, what i thought about. I will try to test patch by Jens. One small thing, sorry for slight derail of thread topic, which come to my mind was option for kind of automatic set of blocksize during read to match length of each pre-generated file within sequence, which fio got from directory using opendir directive. Idea behind this come from common behaviour of VFX applications, which issue read io for whole frame size. So application use stat() output to get actual file size before reading of each frame. If I have same filesize per frame it is easy to adjust blocksize before benchmark, but if i want to test read performance of sequence with compressed frames or simulate mixture of different resolutions, this will be handy. Thank you and especially Jens for creation of fio (first day with it is mindblowing :) Michal Smucr -- 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
