NVIDIA Sata - Slow Disk (Second Try)
Lonni J Friedman
netllama at gmail.com
Mon Apr 9 19:00:20 UTC 2007
My disks are all Seagate. My only guess is that this is some weird
Samsung disk firmware issue, but I really don't have any good ideas.
If you have any non-Samsung disks to test that might shed some light.
You should also verify that you're using the latest motherboard BIOS.
On 4/9/07, Srikanth Konjarla <srikanth.konjarla at gmail.com> wrote:
> Thanks for the response. I got the parameter in question from one of the
> mailing lists where it is claimed to increase the performance. In my
> case however, it did not make much of a difference. I am pasting the
> output from "hdparm -i" as well as "hdparm -I" which gives us the
> information about the disk.
>
> Srikanth
>
> # hdparm -i /dev/sda
>
> /dev/sda:
> HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
>
> # hdparm -I /dev/sda
>
> /dev/sda:
>
> ATA device, with non-removable media
> Model Number: SAMSUNG HM100JI
> Serial Number: S0EFJ10L500218
> Firmware Revision: YH100-13
> Standards:
> Used: ATA/ATAPI-7 T13 1532D revision 0
> Supported: 7 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: 195371568
> LBA48 user addressable sectors: 195371568
> device size with M = 1024*1024: 95396 MBytes
> device size with M = 1000*1000: 100030 MBytes (100 GB)
> 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 = 16 Current = 16
> Advanced power management level: unknown setting (0x0080)
> Recommended acoustic management value: 254, current value: 0
> DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5
> *udma6 udma7
> 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
> Automatic Acoustic Management feature set
> * 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
> * IDLE_IMMEDIATE with UNLOAD
> * SATA-I signaling speed (1.5Gb/s)
> * Native Command Queueing (NCQ)
> * Host-initiated interface power management
> * Phy event counters
> DMA Setup Auto-Activate optimization
> Device-initiated interface power management
> * Software settings preservation
> Security:
> Master password revision code = 65534
> supported
> not enabled
> not locked
> frozen
> not expired: security count
> supported: enhanced erase
> 88min for SECURITY ERASE UNIT. 88min for ENHANCED SECURITY ERASE
> UNIT.
> Checksum: correct
>
>
>
>
> Lonni J Friedman wrote:
> > With a similar setup I'm seeing about 60MB/s for buffered disk reads
> > using sata_nv. Why are you booting with the combined_mode=libata
> > option? Does the performance change without that option?
> >
> > Specifically what kind of SATA disk are you using?
> >
> > On 4/9/07, Srikanth Konjarla <srikanth.konjarla at gmail.com> wrote:
> >> All,
> >>
> >> I am running FC6 (with latest update, 64-bit) on AMD Dual Core with 1GB
> >> RAM. It contains a SATA hard disk. I am experience sluggishness when
> >> files are opened or closed (saved). I suspect that i have slow SATA
> >> performance even though i am not sure. I have following stats.
> >>
> >> # hdparm -Tt /dev/sda
> >>
> >> /dev/sda:
> >> Timing cached reads: 2452 MB in 2.00 seconds = 1226.48 MB/sec
> >> Timing buffered disk reads: 86 MB in 3.03 seconds = 28.35 MB/sec
> >>
> >> I am concerned about 28.35 MB/Sec speed here.
> >>
> >> # hdparm -i /dev/sda
> >>
> >> /dev/sda:
> >> HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
> >>
> >> # dmesg | grep -i sata
> >> sata_nv 0000:00:0e.0: version 3.2
> >> ata1: SATA max UDMA/133 cmd 0xE800 ctl 0xE482 bmdma 0xE000 irq 21
> >> ata2: SATA max UDMA/133 cmd 0xE400 ctl 0xE082 bmdma 0xE008 irq 21
> >> scsi0 : sata_nv
> >> ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> >> scsi1 : sata_nv
> >> ata2: SATA link down (SStatus 0 SControl 300)
> >>
> >> # lsmod | grep -i sata
> >> sata_nv 29509 4
> >> libata 120553 1 sata_nv
> >>
> >> Kernel Boot Parameter
> >> kernel /vmlinuz-2.6.20-1.2933.fc6 ro root=LABEL=/1 noquiet
> >> combined_mode=libata
> >>
> >> Any suggestions/recommendations/comments are welcome.
> >>
> >> Thanks
> >>
> >> Srikanth
> >
>
> --
> fedora-list mailing list
> fedora-list at redhat.com
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
>
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
L. Friedman netllama at gmail.com
LlamaLand http://netllama.linux-sxs.org
More information about the users
mailing list