I know, I know, I really should wait until the drive build is done. I know I should do that. [root@Mj?lnir ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/md0 89G 6.8G 77G 9% / tmpfs 127G 0 127G 0% /dev/shm /dev/sdc 48T 393G 47T 1% /data/3 /dev/sdb 48T 395G 47T 1% /data/2 /dev/sdd 33T 367G 33T 2% /data/4 /dev/sda 48T 374G 47T 1% /data/1 I called it Mj?lnir, as I liked this quote:
(or as I like to think of it) … of data. But I gotta know. How fast can this system run? Start up our 1TB write. This is simply streaming 1TB of data out to the drives. Thats it. Only a file system. Simple stream. Uncached. So this is really … really streaming. And its being burdened by the volume build. So we aren’t at maximum speed. Light up fio with our test, and … … start up dstat in another window, give it some time, and then …
` 1 2 90 7 0 0| 0 6482M| 240B 1048B| 0 0 | 19k 6228
1 2 90 7 0 0| 0 5908M| 0 0 | 0 0 | 18k 5523
1 2 90 8 0 0| 0 5667M|4970B 11k| 0 0 | 18k 5565
1 2 88 10 0 0| 0 6042M| 0 0 | 0 0 | 16k 5902
1 2 90 8 0 0| 0 6663M|5894B 11k| 0 0 | 21k 6567
1 2 90 7 0 0| 0 6479M| 0 0 | 0 0 | 20k 6229
1 2 90 7 0 0| 0 6808M|7118B 14k| 0 0 | 22k 6660
----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read writ| recv send| in out | int csw
1 2 90 7 0 0| 0 6517M| 0 0 | 0 0 | 20k 6234
1 2 90 7 0 0| 0 6905M|5090B 11k| 0 0 | 21k 6588
1 2 90 7 0 0| 0 6696M| 0 0 | 0 0 | 23k 6331
1 2 89 9 0 0| 0 6668M|1284B 2797B| 0 0 | 19k 6202
1 1 89 9 0 0| 0 5301M| 0 0 | 0 0 | 15k 5020
1 2 90 7 0 0| 0 5979M| 240B 1048B| 0 0 | 18k 5876
`
Yeah, its like that. Imagine what this baby could do when its done with the build. Imagine. I’ll try to show you in a few hours.