Re: [PATCH] speed up SATA

From: Marcus Hartig
Date: Wed Mar 31 2004 - 11:20:03 EST

Jeff Garzik wrote:

Can you post the relevant 'dmesg' output?

Linux version 2.6.5-rc3-mm1 (cowboy@redtuxi) (gcc-Version 3.3.3 20040311 (Red Hat Linux 3.3.3-3))
Kernel command line: ro root=/dev/sda1 doataraid noraid acpi=off rhgb
libata version 1.02 loaded.
sata_sil version 0.54
ata1: SATA max UDMA/100 cmd 0xE0800080 ctl 0xE080008A bmdma 0xE0800000 irq 4
ata2: SATA max UDMA/100 cmd 0xE08000C0 ctl 0xE08000CA bmdma 0xE0800008 irq 4
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:207f
ata1: dev 0 ATA, max UDMA/133, 160086528 sectors
ata1: dev 0 configured for UDMA/100
scsi0 : sata_sil
ata2: no device found (phy stat 00000000)
ata2: thread exiting
scsi1 : sata_sil
Vendor: ATA Model: Maxtor 6Y080M0 Rev: 1.02
Type: Direct-Access ANSI SCSI revision: 05
ata1: dev 0 max request 128K
SCSI device sda: 160086528 512-byte hdwr sectors (81964 MB)
SCSI device sda: drive cache: write through
sda: sda1 sda2 sda3 sda4 < sda5 >
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0

Also my Maxtor is now configured for UDMA/100. With earlier versions of libata/sata_sil it was UDMA/133 wo any problems. The performance is now dropped a little bit from ~52MB to ~48MB with hdparm.
Best regards,

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