Re: [SLUG] Disk Access Speed
On Mon, 2003-07-28 at 11:34, Lyle Chapman wrote: Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. I ran hdparm -Tt /dev/hda and the result was the cache access was reporting the right speed but disk access was 3.5meg/sec (pathetic) I ran hdparm again and turned all the go faster bits on, this increased it to 5.5 meg/sec. Although I did notice that I get a DMA error in hdparm when trying to turn DMA on. Any ideas anyone, thanks? I have just fixed this on my Mandrake 9.1 system (kernel 2.4.21). It ended up that I had to add my drive's model number (ST360015A) to the drive_whitelist in /usr/src/linux/drivers/ide/ide-dma.c and recompile the kernel (after checking that it wasn't in the drive_blacklist or bad_dma_drives list for good reason). All is well with DMA now. Hope it works for you. Cheers, John... -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] Disk Access Speed
On Tue, 2003-07-29 at 13:17, Lyle Chapman wrote:
So I just add this to the drive_whitelist?
{ Seagate, ALL },
The model value gained with `hdparm -i` is what you use where you have
Seagate as below...
# hdparm -i /dev/hda
/dev/hda:
Model=ST360015A, FwRev=3.33, SerialNo=3KC1W26H
-
Yes, you do have the format correct.
Cheers,
John...
--
SLUG - Sydney Linux User's Group - http://slug.org.au/
More Info: http://lists.slug.org.au/listinfo/slug
[SLUG] Disk Access Speed
Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. I ran hdparm -Tt /dev/hda and the result was the cache access was reporting the right speed but disk access was 3.5meg/sec (pathetic) I ran hdparm again and turned all the go faster bits on, this increased it to 5.5 meg/sec. Although I did notice that I get a DMA error in hdparm when trying to turn DMA on. Any ideas anyone, thanks? Lyle Chapman Pre-Press Supervisor Torch Publishing Co. www.torchpublishing.com.au 47 Allingham Street, Condell Park 2200, NSW, Australia (02) Ph: 9795 (02) Fax: 9795 0096 -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
RE: [SLUG] Disk Access Speed
Does this drive share an IDE channel with an optical drive? If the CD/DVD drive resides on the same IDE channel (/dev/hdb), the transfer speeds will default to the slower device's speed... -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lyle Chapman Sent: Monday, 28 July 2003 11:34 AM To: [EMAIL PROTECTED] Subject: [SLUG] Disk Access Speed Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. I ran hdparm -Tt /dev/hda and the result was the cache access was reporting the right speed but disk access was 3.5meg/sec (pathetic) I ran hdparm again and turned all the go faster bits on, this increased it to 5.5 meg/sec. Although I did notice that I get a DMA error in hdparm when trying to turn DMA on. Any ideas anyone, thanks? Lyle Chapman Pre-Press Supervisor Torch Publishing Co. www.torchpublishing.com.au 47 Allingham Street, Condell Park 2200, NSW, Australia (02) Ph: 9795 (02) Fax: 9795 0096 -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] Disk Access Speed
On Mon, Jul 28, 2003 at 11:34:10AM +1000, Lyle Chapman wrote: Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. Are you running it under 2.4.21? I've had really slow speeds on HDD access under 2.4.21, and I'm told it's because something got broken in IDE DMA in that kernel version. Luckily the machine I'm running it on is only my firewall, so HDD speed isn't important. - Matt -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] Disk Access Speed
I haven't really tuned anything for this. The newer 2.4 kernels mostly optimize the disk paramaters. Presently I've got a 120GB WD disk in the box. hdparm revels: /dev/hda: Timing buffer-cache reads: 128 MB in 0.15 seconds =853.33 MB/sec Timing buffered disk reads: 64 MB in 1.42 seconds = 45.07 MB/sec Which is okay for what I use the disk with. I remeber a while back playing with hdparm and getting the reads up around 60MB/s from memory. I think you'll need to look in the IDE/ATAPI section of the kernel config there is options there *from memory* for use DMA by default and another option that escapes me for optimized use of DMA. Brett Lyle Chapman wrote: Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. I ran hdparm -Tt /dev/hda and the result was the cache access was reporting the right speed but disk access was 3.5meg/sec (pathetic) I ran hdparm again and turned all the go faster bits on, this increased it to 5.5 meg/sec. Although I did notice that I get a DMA error in hdparm when trying to turn DMA on. Any ideas anyone, thanks? Lyle Chapman Pre-Press Supervisor Torch Publishing Co. www.torchpublishing.com.au 47 Allingham Street, Condell Park 2200, NSW, Australia (02) Ph: 9795 (02) Fax: 9795 0096 -- Brett Fenton General Manager NetRegistry Pty Ltd ___ http://www.netregistry.com.au/ Tel: +61 2 96996099 | Fax: +61 2 96996088 PO Box 270 Broadway | NSW 2007, Australia Your Total Internet Business Services Provider Trusted by 10,000s of Oz Businesses Since 1997 This email is from NetRegistry Pty Ltd. The contents of this message are commercial and in confidence to the intended addresseee. The message may contain copyrighted and/or legally priviledged information. No person or entity other than the intended recipient may read, print or store this message, including any and all attached files. The intended recipient may not forward this message to any third party without express written permission from NetRegistry Pty Ltd. -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] Disk Access Speed
I've got 2.4.21 and the IDE/DMA seems to be fine. Brett Matthew Palmer wrote: On Mon, Jul 28, 2003 at 11:34:10AM +1000, Lyle Chapman wrote: Sorry one more question to annoy everybody with, I have installed a new 80gb seagate drive and the problem is when I copy something to or from it I am getting a woeful 3 mb/sec transfer speed. Are you running it under 2.4.21? I've had really slow speeds on HDD access under 2.4.21, and I'm told it's because something got broken in IDE DMA in that kernel version. Luckily the machine I'm running it on is only my firewall, so HDD speed isn't important. - Matt -- Brett Fenton General Manager NetRegistry Pty Ltd ___ http://www.netregistry.com.au/ Tel: +61 2 96996099 | Fax: +61 2 96996088 PO Box 270 Broadway | NSW 2007, Australia Your Total Internet Business Services Provider Trusted by 10,000s of Oz Businesses Since 1997 This email is from NetRegistry Pty Ltd. The contents of this message are commercial and in confidence to the intended addresseee. The message may contain copyrighted and/or legally priviledged information. No person or entity other than the intended recipient may read, print or store this message, including any and all attached files. The intended recipient may not forward this message to any third party without express written permission from NetRegistry Pty Ltd. -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] Disk Access Speed
On Mon, Jul 28, 2003 at 11:34:10AM +1000, Lyle Chapman wrote: Although I did notice that I get a DMA error in hdparm when trying to turn DMA on. Do you have a good quality, dma capable cable? Matt -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
