Ubuntu, segare överföring än FreeBSD

root@slaskhink:~# hdparm /dev/hda
/dev/hda:
 multcount    =  0 (off)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 65535/16/63, sectors = 156368016, start = 0

root@slaskhink:~# hdparm -i /dev/hda

/dev/hda:

 Model=SAMSUNG SP8004H, FwRev=QW100-61, SerialNo=0415J1FTC14848
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156368016
 IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: ATA/ATAPI-6 T13 1410D revision 1:  ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6

 * signifies the current active mode
root@slaskhink:~# hdparm -I /dev/hda

/dev/hda:

ATA device, with non-removable media
        Model Number:       SAMSUNG SP8004H
        Serial Number:      0415J1FTC14848
        Firmware Revision:  QW100-61
Standards:
        Used: ATA/ATAPI-6 T13 1410D revision 1
        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:  156368016
        device size with M = 1024*1024:       76351 MBytes
        device size with M = 1000*1000:       80060 MBytes (80 GB)
Capabilities:
        LBA, IORDY(cannot be disabled)
        Standby timer values: spec'd by Standard, no device specific minimum
        R/W multiple sector transfer: Max = 16  Current = ?
        Recommended acoustic management value: 128, current value: 0
        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
           *    DOWNLOAD_MICROCODE
                SET_MAX security extension
                Automatic Acoustic Management feature set
           *    Mandatory FLUSH_CACHE
           *    SMART error logging
           *    SMART self-test
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
        not     frozen
        not     expired: security count
                supported: enhanced erase
        96min for SECURITY ERASE UNIT. 96min for ENHANCED SECURITY ERASE UNIT.
HW reset results:
        CBLID- above Vih
        Device num = 0 determined by the jumper
Checksum: correct

root@slaskhink:~# time dd if=/dev/zero of=testfile bs=1024k count=1024 && time d                                                                              d if=testfile of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1,1 GB) copied, 47,6814 seconds, 22,5 MB/s

real    0m48.374s
user    0m0.060s
sys     0m14.940s
1024+0 records in
1024+0 records out
1073741824 bytes (1,1 GB) copied, 42,0349 seconds, 25,5 MB/s

real    0m43.727s
user    0m0.030s
sys     0m7.610s

root@slaskhink:~# apt-cache search ttcp
netpipe-lam - A network performance tool using LAM MPI
netpipe-mpich - A network performance tool using MPICH MPI
netpipe-pvm - A network performance tool using PVM
netpipe-tcp - A network performance tool using the TCP protocol