2013/4/5 Jens Axboe <axboe@xxxxxxxxx>: > and then 'write' and 'read' job would be sharing those files. Let me > know if it works for you. Thank you for patch Jens. Re-using files working for me and i also like that string format specification. Compiled with last git and tested on Mac OS X and Centos 5. I played with fio and sequence tests, it already helps me to get figures much closer to real world utilization. I always struggled with generic synthetic benchmarks as it usually don't work with sequences. So i can roughly set IO sizes, modes, but for example can't simulate performance differences caused by different file allocation between one huge file (with few extents due to filesystem internal optimization) and thousands of files. Great! Michal P.S.: Here is what i tried as single thread HD video job. (and as example where application read whole frame at once, so bs is uncommonly equal filesize). [global] ioengine=sync buffered=0 filesize=8305664 bs=8305664 nrfiles=3000 openfiles=1 filename_format=HD_sequence_test.$filenum.dpx file_service_type=sequential directory=/mnt/test/io [2min-sequence-write] rw=write [2min-sequence-read] stonewall rw=read -- 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
