hdparm -t /dev/sda1 gave me speeds aroubd 30MB/s
After enabling "Use Host IO cache" speeds are getting better at ± 250~350 MB/s. It's still not the 500MB/s that speed test I am getting in Mac OS El Capitan with Disk Sensei. (different tests show disk speeds of 500Mb/s read, 350MB/s write and 165 MB/s rewrite).
In both CentOS and OS X, it isn't possible anymore to enable TRIM support.
CentOS output disk info:
Code: Select all
# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: VBOX HARDDISK
Serial Number: VBdc6ad498-24be90e2
Firmware Revision: 1.0
Standards:
Used: ATA/ATAPI-6 published, ANSI INCITS 361-2002
Supported: 6 5 4
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 209715200
LBA48 user addressable sectors: 209715200
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 102400 MBytes
device size with M = 1000*1000: 107374 MBytes (107 GB)
cache/buffer size = 256 KBytes (type=DualPortCache)
Capabilities:
LBA, IORDY(cannot be disabled)
Queue depth: 32
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 128 Current = 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* Power Management feature set
* Write cache
* Look-ahead
* 48-bit Address feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
I am running on a Mac Mini Server with SATA3 support.