Hi -
We are running PowerEdge R530 with a H730p controller with 4 SSD drives configured as Raid 5. We are getting awful iops. Trying to figure out what to look at?
$ dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 73.7852 s, 14.6 MB/s
The perccli shows:
perccli /c0 show
Generating detailed summary of the adapter, it may take a while to complete.
Controller = 0
Status = Success
Description = None
Product Name = PERC H730P Mini
Serial Number = 4AB01IR
SAS Address = 5b083fe0dae04400
PCI Address = 00:01:00:00
System Time = 03/05/2015 10:07:40
Mfg. Date = 10/14/14
Controller Time = 03/05/2015 19:05:51
FW Package Build = 25.2.1.0037
BIOS Version = 6.18.02.0_4.16.07.00_0x06070400
FW Version = 4.240.00-3615
Driver Name = megaraid_sas
Driver Version = 06.803.02.00-rc1
Current Personality = RAID-Mode
Vendor Id = 0x1000
Device Id = 0x5D
SubVendor Id = 0x1028
SubDevice Id = 0x1F47
Host Interface = PCIE
Device Interface = SAS-12G
Bus Number = 1
Device Number = 0
Function Number = 0
Drive Groups = 1
TOPOLOGY :
========
-------------------------------------------------------------------------
DG Arr Row EID:Slot DID Type State BT Size PDC PI SED DS3 FSpace
-------------------------------------------------------------------------
0 - - - - RAID5 Optl N 1.0810 TB dflt N N dflt N
0 0 - - - RAID5 Optl N 1.0810 TB dflt N N dflt N
0 0 0 32:0 0 DRIVE Onln N 372.0 GB dflt N N dflt -
0 0 1 32:1 1 DRIVE Onln N 372.0 GB dflt N N dflt -
0 0 2 32:2 2 DRIVE Onln N 372.0 GB dflt N N dflt -
0 0 3 32:3 3 DRIVE Onln N 372.0 GB dflt N N dflt -
-------------------------------------------------------------------------
DG=Disk Group Index|Arr=Array Index|Row=Row Index|EID=Enclosure Device ID
DID=Device ID|Type=Drive Type|Onln=Online|Rbld=Rebuild|Dgrd=Degraded
Pdgd=Partially degraded|Offln=Offline|BT=Background Task Active
PDC=PD Cache|PI=Protection Info|SED=Self Encrypting Drive|Frgn=Foreign
DS3=Dimmer Switch 3|dflt=Default|Msng=Missing|FSpace=Free Space Present
Virtual Drives = 1
VD LIST :
=======
----------------------------------------------------------------
DG/VD TYPE State Access Consist Cache sCC Size Name
----------------------------------------------------------------
0/0 RAID5 Optl RW Yes RWBD - 1.0810 TB SaveServer
----------------------------------------------------------------
Cac=CacheCade|Rec=Recovery|OfLn=OffLine|Pdgd=Partially Degraded|dgrd=Degraded
Optl=Optimal|RO=Read Only|RW=Read Write|B=Blocked|Consist=Consistent|
R=Read Ahead Always|NR=No Read Ahead|WB=WriteBack|
AWB=Always WriteBack|WT=WriteThrough|C=Cached IO|D=Direct IO|sCC=Scheduled
Check Consistency
Physical Drives = 4
PD LIST :
=======
---------------------------------------------------------------------------
EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp
---------------------------------------------------------------------------
32:0 0 Onln 0 372.0 GB SATA SSD N N 512B LITEON IT ECE-400NAS U
32:1 1 Onln 0 372.0 GB SATA SSD N N 512B LITEON IT ECE-400NAS U
32:2 2 Onln 0 372.0 GB SATA SSD N N 512B LITEON IT ECE-400NAS U
32:3 3 Onln 0 372.0 GB SATA SSD N N 512B LITEON IT ECE-400NAS U
---------------------------------------------------------------------------
EID-Enclosure Device ID|Slt-Slot No.|DID-Device ID|DG-DriveGroup
DHS-Dedicated Hot Spare|UGood-Unconfigured Good|GHS-Global Hotspare
UBad-Unconfigured Bad|Onln-Online|Offln-Offline|Intf-Interface
Med-Media Type|SED-Self Encryptive Drive|PI-Protection Info
SeSz-Sector Size|Sp-Spun|U-Up|D-Down|T-Transition|F-Foreign
UGUnsp-Unsupported|UGShld-UnConfigured shielded|HSPShld-Hotspare shielded
CFShld-Configured shielded
BBU_Info :
========
----------------------------------------------------------------------
Model State RetentionTime Temp Mode MfgDate Next Learn
----------------------------------------------------------------------
BBU Optimal 0 hour(s) 28C - 2011/07/18 2015/04/10 01:48:28
----------------------------------------------------------------------
Thanks for any ideas.
- Kim