Hi, If browsing the minimum output of the complete fio run I noticed that the disk utilization is summarized over all sections (at least it seems so), here for dm and one subdevice: One fio run (see the groupid increasing) 3 fio-2.13 write 0 3 fio-2.13 random-write 1 3 fio-2.13 random-read 2 3 fio-2.13 read 3 3 fio-2.13 randrw 4 3 fio-2.13 rw 5 Here one dm-device: dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% dm-8 550045 707302 0 0 3513180 4029418 7546643 94,96% and the phsyical below that one: sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% sdh 287045 456931 262374 252536 1254009 1718403 2973177 94,95% For me this output seems somehow "wrong" or at least unexpected, I would rather expect to see something like this (if you run the sections individually): (see groupid always 0) 3 fio-2.13 write 0 3 fio-2.13 random-write 0 3 fio-2.13 random-read 0 3 fio-2.13 read 0 3 fio-2.13 randrw 0 3 fio-2.13 rw 0 dm-8 0 241093 0 0 0 678358 678619 98,58% dm-8 0 180308 0 0 0 730751 730825 90,58% dm-8 62571 2946 0 0 342919 28389 371404 98,49% dm-8 266462 0 0 0 1026655 0 1028046 98,28% dm-8 44066 74766 0 0 248412 314647 563386 87,10% dm-8 200013 205349 0 0 650125 725574 1377033 98,46% sdh 0 198694 0 46847 0 468245 468165 98,36% sdh 0 158117 0 24270 0 409853 409791 90,50% sdh 63450 54 0 2892 346109 380 346458 97,65% sdh 194258 0 74244 0 476486 0 477030 98,01% sdh 44839 66028 0 9681 253069 192361 445370 86,70% sdh 111956 111182 90697 96896 328083 331425 659447 98,28% Or did I miss a setting which could a "correct" per section disk stats? thanks, bernhard -- 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
