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antares2001
Guru
Joined: 02 Mar 2004
Posts: 339
Location: Germany
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 Posted: Thu May 11, 2006 6:03 pm Post subject: SATA-II WD 250GB and Sil3124 controller with bad performance |
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Hello!
I've bought a new WD 250 GB SATA-II harddisk and a PCI-Card SATA-II controller as follows:
| Quote: | | 02:0a.0 RAID bus controller: Silicon Image, Inc. SiI 3124 PCI-X Serial ATA Controller (rev 01) |
It is NOT PCI express, it is ordinary PCI.
However, I have a problem. Using the 2.6.16 kernel I have compiled into kernel the appropriate low-level sata driver in the SCSI section of menuconfig. Anyhow, when copying a 500MB file from one partition on the HDD to another under KDE, I first get 50 MB/s until my memory is full and then it decreases to 15-17 MB/s while the CPU usage rises to 100%.
So obviously the CPU is doing all the job and in the beginning my large memory (1,5 GB) buffers and helps getting the 50MB/s.
Where can be my configuration fault? Booting from the livecd, I get about 60-70 MB/s with hdparm -tT. Can I turn somehow something on like DMA on IDE devices?
These infos come from a livecd boot:
| Quote: | $ cat /tmp/hdparm.txt
/dev/sda:
Timing cached reads: 2456 MB in 2.00 seconds = 1228.00 MB/sec
Timing buffered disk reads: 184 MB in 3.00 seconds = 61.33 MB/sec
/dev/sda:
Timing cached reads: 2432 MB in 2.00 seconds = 1216.00 MB/sec
Timing buffered disk reads: 184 MB in 3.01 seconds = 61.13 MB/sec
/dev/sda:
Timing cached reads: 2440 MB in 2.00 seconds = 1220.00 MB/sec
Timing buffered disk reads: 184 MB in 3.00 seconds = 61.33 MB/sec
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These from a "normal" boot of my system:
| Quote: | # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2216 MB in 2.00 seconds = 1107.86 MB/sec
Timing buffered disk reads: 10 MB in 3.77 seconds = 2.65 MB/sec
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2228 MB in 2.00 seconds = 1114.27 MB/sec
Timing buffered disk reads: 10 MB in 3.72 seconds = 2.69 MB/sec
# hdparm -tT /dev/hda /dev/hdb /dev/sda
/dev/hda:
Timing cached reads: 2184 MB in 2.00 seconds = 1092.71 MB/sec
Timing buffered disk reads: 86 MB in 3.03 seconds = 28.40 MB/sec
/dev/hdb:
Timing cached reads: 2112 MB in 2.00 seconds = 1056.53 MB/sec
Timing buffered disk reads: 186 MB in 3.02 seconds = 61.67 MB/sec
/dev/sda:
Timing cached reads: 2200 MB in 2.00 seconds = 1099.27 MB/sec
Timing buffered disk reads: 10 MB in 3.76 seconds = 2.66 MB/sec
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Obviously something strage is going on...
Here the lsmod of the livecd:
| Quote: | # cat /tmp/lsmod.txt
Module Size Used by
parport_pc 27716 0
parport 22472 1 parport_pc
floppy 47076 0
pcspkr 2052 0
rtc 9908 0
e1000 78260 0
dm_mirror 15440 0
dm_mod 37784 1 dm_mirror
pdc_adma 7172 0
sata_mv 13444 0
ata_piix 7428 0
ahci 10116 0
sata_qstor 7428 0
sata_vsc 6276 0
sata_uli 5636 0
sata_sis 6148 0
sata_sx4 10884 0
sata_nv 6916 0
sata_via 6660 0
sata_svw 5892 0
sata_sil24 8580 1
sata_sil 7172 0
sata_promise 8580 0
libata 36104 15 pdc_adma,sata_mv,ata_piix,ahci,sata_qstor,sata_vsc,sata_uli,sata_sis,sata_sx4,sata_nv,sata_via,sata_svw,sata_sil24,sata_sil,sata_promise
sbp2 17412 0
ohci1394 26036 0
ieee1394 57656 2 sbp2,ohci1394
sl811_hcd 10240 0
ohci_hcd 15748 0
uhci_hcd 24976 0
usb_storage 50624 0
usbhid 29792 0
ehci_hcd 23688 0
usbcore 80516 7 sl811_hcd,ohci_hcd,uhci_hcd,usb_storage,usbhid,ehci_hcd
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I have directly compiled into the kernel sata_sil24. What is that libata?
Here's more info on the drive:
| Quote: | # hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD2500KS-00MJB0
Serial Number: WD-WCANK2149275
Firmware Revision: 02.01C03
Standards:
Supported: 7 6 5 4
Likely used: 7
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: 488397168
device size with M = 1024*1024: 238475 MBytes
device size with M = 1000*1000: 250059 MBytes (250 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 1
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
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:
* NOP cmd
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* FLUSH CACHE EXT command
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* 48-bit Address feature set
Automatic Acoustic Management feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* General Purpose Logging feature set
* SMART self-test
* SMART error logging
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
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_________________
* Toshiba SM30X Notebook, Pentium-M 725 CPU, ATI Radeon 9700, 512MB RAM, 80GB
* Pentium D 820 2,8 GHz (EM64T), Geforce6, 200GB + 40GB ATA, 250GB SATA2, WinFastTV 2000XP, 1,5GB RAM
Gentoo Linux 2006.1 |
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didymos
Advocate
Joined: 10 Oct 2005
Posts: 4798
Location: California
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| Posted: Thu May 11, 2006 9:29 pm Post subject: |
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That controller is PCI-X, actually. lspci is right. As to the transfer rate, is there any way to control the DMA setting in the BIOS? If so, try setting udma6; the drive should be capable of it.
[Edit] I should have been more specific: Does the card have it's own BIOS you can access, say with a support disk or something?
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Thomas S. Howard |
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antares2001
Guru
Joined: 02 Mar 2004
Posts: 339
Location: Germany
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| Posted: Thu May 11, 2006 9:47 pm Post subject: |
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Hi!
Well it also has it's own BIOS, but there I can only make some RAID settings. Anyhow, it seems it is a bug in the Beyond kernel (although when I posted this I thought this is a stable driver because it is also in the mainstream kernel). The CD that was shipped with is only for Windows, and since I have no Windows I cannot use it. Perhaps there is some kind of program on it.
I've emerged gentoo-sources and compiled with almost the same .config like the beyond kernel was built with (I only drove Reiser4-support, etc. out) and what a miracle: now I get the 60 MB/s throughput and my system runs smooth - just like I expected it to. Since the root filesystem and the swap partition are on that harddisk, you can imagine how bad the system behaved before.
_________________
* Toshiba SM30X Notebook, Pentium-M 725 CPU, ATI Radeon 9700, 512MB RAM, 80GB
* Pentium D 820 2,8 GHz (EM64T), Geforce6, 200GB + 40GB ATA, 250GB SATA2, WinFastTV 2000XP, 1,5GB RAM
Gentoo Linux 2006.1 |
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