Is there anyway to see how busy a SAS/Sata controller is vs disks? I have a R720 with 14 Samsung 860 EVOs in it (its a lab server) in raid 10 ZFS.
When firing off a dd I (bs=1G count=10) seems like the disks never go above %50 busy. I'm trying to figure out if i'm maxing out SATA 3 BW or if its something else (like terrible dd options). my setup is Dell R720 with 2 x LSI 9361 cards. Each card is going to a dedicated 8 drive board inside the front of the R720. Basically i'm just saying its not a single SAS cable to 14 drives. Don't have cpu info hand.. zeon something. DDR3-1600 (128GB) Both controllers are in 8x slots running PCIe gen 3. BTW i'm sure this has been asked a million times but what would be some decent benchmark tests while i'm at it? _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
