J'ai un SSD Samsung 840 pro et il est lent. Il sature fréquemment en I/O et j'ai pas l'impression qu'il aille très vite en écriture. http://sprunge.us/BSFW
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moviuro@psychoticdelirium ~ % dd if=/dev/zero of=output bs=8k count=300k; rm -f output
307200+0 records in
307200+0 records out
2516582400 bytes (2.5 GB) copied, 6.40086 s, 393 MB/s
moviuro@psychoticdelirium ~ % dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc; rm -f tempfile
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 4.98009 s, 216 MB/sVoilà quelques outputs qui pourraient vous donner une idée :
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root@psychoticdelirium ~ # hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 13202 MB in 2.00 seconds = 6603.87 MB/sec
Timing buffered disk reads: 248 MB in 3.00 seconds = 82.56 MB/sec
root@psychoticdelirium ~ # hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 13496 MB in 2.00 seconds = 6751.45 MB/sec
Timing buffered disk reads: 256 MB in 3.02 seconds = 84.73 MB/secCode : Tout sélectionner
cat /sys/class/block/sda/queue/scheduler
[noop] deadline cfqCode : Tout sélectionner
root@psychoticdelirium / # lshw -class disk -class storage
*-storage
description: RAID bus controller
product: 82801 Mobile SATA Controller [RAID mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 04
width: 32 bits
clock: 66MHz
capabilities: storage msi pm bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:27 ioport:f0d0(size=8) ioport:f0c0(size=4) ioport:f0b0(size=8) ioport:f0a0(size=4) ioport:f060(size=32) memory:f7e36000-f7e367ffCode : Tout sélectionner
root@psychoticdelirium ~ # hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: Samsung SSD 840 PRO Series
Serial Number: S12RNEAD308110P
Firmware Revision: DXM04B0Q
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x0039)
Supported: 9 8 7 6 5
Likely used: 9
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 500118192
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 244198 MBytes
device size with M = 1000*1000: 256060 MBytes (256 GB)
cache/buffer size = unknown
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
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:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
SET_MAX security extension
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 64-bit World wide name
Write-Read-Verify feature set
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Gen3 signaling speed (6.0Gb/s)
* Native Command Queueing (NCQ)
* Phy event counters
* unknown 76[15]
* DMA Setup Auto-Activate optimization
* Device-initiated interface power management
Asynchronous notification (eg. media change)
* Software settings preservation
unknown 78[8]
* SMART Command Transport (SCT) feature set
* SCT Write Same (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
* reserved 69[4]
* SET MAX SETPASSWORD/UNLOCK DMA commands
* WRITE BUFFER DMA command
* READ BUFFER DMA command
* Data Set Management TRIM supported (limit 8 blocks)
* Deterministic read ZEROs after TRIM
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50025385502498b8
NAA : 5
IEEE OUI : 002538
Unique ID : 5502498b8
Checksum: correct
)++
EDIT: Yeah! Après plusieurs moi de bataille et de patience, on dirait que tout va bien !!
