HD SATA 2 mais lento que ATA100
Fala galera, como estão as coisas??
Pessoal, troquei o micro aqui e agora uso hd SATA2, mas percebi que ele está mais lento que o antigo ATA, os dois estão ligados no mesmo micro, e nos testes com o hdparm é possível ver a diferença...
em teorias o sata era pra ser muito, mais rápido que o ata100, mas não é isso que está ocorrendo.
Estou usando kubuntu 7.04 64bits...
Teste do hd sata2:
Código :
root@desktop:~# hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 1334 MB in 2.00 seconds = 667.01 MB/sec
Timing buffered disk reads: 172 MB in 3.03 seconds = 56.80 MB/sec
teste do hd ata100
Código :
root@desktop:~# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 1344 MB in 2.00 seconds = 672.29 MB/sec
Timing buffered disk reads: 220 MB in 3.00 seconds = 73.28 MB/sec
os dados abaixo são referentes aos HDs, dados extraídos do dmesg:
Código :
[ 20.840997] SCSI subsystem initialized
[ 20.886893] ata1: SATA max UDMA/133 cmd 0x000000000001fc00 ctl 0x000000000001f802 bmdma 0x000000000001ec00 irq 21
[ 20.895172] ata2: SATA max UDMA/133 cmd 0x000000000001f400 ctl 0x000000000001f002 bmdma 0x000000000001ec08 irq 21
[ 20.903450] scsi0 : sata_via
[ 21.113375] ata1: SATA link down 1.5 Gbps (SStatus 0 SControl 300)
[ 21.140507] scsi1 : sata_via
[ 21.349333] ata2: SATA link down 1.5 Gbps (SStatus 0 SControl 300)
[ 22.413624] ata3: SATA max UDMA/133 cmd 0xffffc20000028100 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 28
[ 22.422856] ata4: SATA max UDMA/133 cmd 0xffffc20000028180 ctl 0x0000000000000000 bmdma 0x0000000000000000 irq 28
[ 22.431766] scsi2 : ahci
[ 22.743364] ata3: SATA link down (SStatus 0 SControl 300)
[ 22.752019] scsi3 : ahci
[ 23.218181] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 23.231487] ata4.00: ATA-7: SAMSUNG HD300LJ, ZT100-13, max UDMA7
[ 23.239915] ata4.00: 586072368 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 23.253135] ata4.00: configured for UDMA/133
[ 23.261716] scsi 3:0:0:0: Direct-Access ATA SAMSUNG HD300LJ ZT10 PQ: 0 ANSI: 5
[ 23.270530] PM: Adding info for scsi:3:0:0:0
[ 23.296484] ata5: PATA max UDMA/100 cmd 0x000000000001cc00 ctl 0x000000000001c802 bmdma 0x000000000001bc00 irq 29
[ 23.305591] ata6: PATA max UDMA/100 cmd 0x000000000001c400 ctl 0x000000000001c002 bmdma 0x000000000001bc08 irq 29
[ 23.314509] scsi4 : pata_jmicron
[ 23.474230] scsi5 : pata_jmicron
[ 23.662015] scsi 3:0:0:0: Attached scsi generic sg0 type 0
[ 23.678479] SCSI device sda: 586072368 512-byte hdwr sectors (300069 MB)
[ 23.696037] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 23.705168] SCSI device sda: 586072368 512-byte hdwr sectors (300069 MB)
[ 23.722643] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 23.780225] sd 3:0:0:0: Attached scsi disk sda
[ 32.803183] ide0: BM-DMA at 0xe400-0xe407, BIOS settings: hda:DMA, hdb:pio
[ 33.215350] hda: SAMSUNG SP2514N, ATA DISK drive
[ 36.614223] hda_codec: Unknown model for ALC883, trying auto-probe from BIOS...
[ 36.772132] hda: max request size: 512KiB
[ 36.778600] hda: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63, UDMA(100)
[ 36.785332] hda: cache flushes supported
[ 36.792898] hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 >
[ 275.317316] hda-intel: Invalid position buffer, using LPIB read method instead.
existe alguma configuração que seja necessário fazer para que o HD tenha o desempenho esperado???
valeu
