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:
Mj?lnir is depicted in Norse mythology as one of the most fearsome weapons, capable of leveling mountains.
(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.
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