Hi Martin,
here you are - the second command, however, did not seem to produce
anything useful.
But beware: this is the old firmware, EXT0BB6Q, i.e. the one with the
performance issues (not seen on my machine yet), not the one that causes
the problems with fstrim - named EXT0DB6Q.
As I mentioned I shy away from upgrading at this point, not knowing
whether my Linux system runs fstrim somewhere behind my back. I am not
that deeply involved in the inner workings of the kernel as you guys.
This is my bread and butter machine, I'd rather not expose it to risk if
I can help it.
Cheers
Günter
Am 04.05.2015 um 17:28 schrieb Martin K. Petersen:
>>>>>> "Günter" == Günter Waller <g.wal@xxxxxx> writes:
>
> Günter> the subject Samsung SSD is having performance issues with "old
> Günter> data" which Samsung now addresses with a new firmware.
>
> I wonder if they enabled the same botched queued discard that they did
> in 850 Pro?
>
> If someone has an 840 Evo with the new firmware it would be helpful for
> us to receive the output of:
>
> # hdparm -I /dev/sdN
> # smartctl -l gplog,0x13 /dev/sdN
>
> I think I might have an 840 in the lab. Will head down and update it
> later this week unless somebody beats me to providing the information
> above.
>
hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: Samsung SSD 840 EVO 250GB
Serial Number: S1DBNSBF767383T
Firmware Revision: EXT0BB6Q
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: 488397168
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 238475 MBytes
device size with M = 1000*1000: 250059 MBytes (250 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 = 1 Current = 1
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
* READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
* DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Asynchronous notification (eg. media change)
* Software settings preservation
* 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]
* DOWNLOAD MICROCODE DMA command
* SET MAX SETPASSWORD/UNLOCK DMA commands
* WRITE BUFFER DMA command
* READ BUFFER DMA command
* Data Set Management TRIM supported (limit 8 blocks)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
2min for SECURITY ERASE UNIT. 8min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50025388a05d2afa
NAA : 5
IEEE OUI : 002538
Unique ID : 8a05d2afa
Checksum: correct
*************************************************************
smartctl -l gplog,0x13 /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-51-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
General Purpose Log 0x13 does not exist (override with '-T permissive' option)
