Цитата exo:
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да я кроме крона ни о ком и не слышал.... »
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В приведённых мной статьях с арчвики вкратце рассказано. Ну и гугль в помощь
Немного приложу свой SSD из профиля к скамейке (куплен был кажись в феврале):
Код:
[root@vadblm vadblm]# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: M4-CT256M4SSD2
Serial Number: 00000000130309264F63
Firmware Revision: 040H
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 0x0028)
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
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
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
* Advanced Power Management feature set
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
* IDLE_IMMEDIATE with UNLOAD
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
* NCQ priority information
* DMA Setup Auto-Activate optimization
Device-initiated interface power management
* 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)
* Data Set Management TRIM supported (limit 8 blocks)
* Deterministic read data after TRIM
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 500a075109264f63
NAA : 5
IEEE OUI : 00a075
Unique ID : 109264f63
Checksum: correct
[root@vadblm vadblm]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 1416 MB in 3.00 seconds = 471.98 MB/sec
[root@vadblm vadblm]# dd if=/dev/zero of=zerofile bs=2M count=2000
2000+0 записей получено
2000+0 записей отправлено
скопировано 4194304000 байт (4,2 GB), 11,5442 c, 363 MB/c
[root@vadblm vadblm]# dd if=zerofile of=/dev/null bs=2M count=2000
2000+0 записей получено
2000+0 записей отправлено
скопировано 4194304000 байт (4,2 GB), 0,521692 c, 8,0 GB/c
[root@vadblm vadblm]# sync
[root@vadblm vadblm]# echo 3 | sudo tee /proc/sys/vm/drop_caches
3
[root@vadblm vadblm]# dd if=zerofile of=/dev/null bs=2M count=2000
2000+0 записей получено
2000+0 записей отправлено
скопировано 4194304000 байт (4,2 GB), 7,78395 c, 539 MB/c
[root@vadblm vadblm]# time rm zerofile
real 0m0.582s
user 0m0.002s
sys 0m0.553s
