Hello everyone, I have installed Fedora 7 on my system with an MSI MS-7191 motherboard,AMD Athlon 64 3000+ CPU,1GB RAM and 160GB SATA hard disk.My motherboard supports hard disk speed of 150MB/s but i get only 15MB/s speed while i am copying.Are there any additional drivers to install?The system loads the sata_sil driver.
Please help me
THANK YOU
On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote:
My motherboard supports hard disk speed of 150MB/s but i get only 15MB/s speed
Have you double-checked that the figures you're reading at are bits per second or bytes per second?
On 7/2/07, Tim ignored_mailbox@yahoo.com.au wrote:
On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote:
My motherboard supports hard disk speed of 150MB/s but i get only 15MB/s speed
Have you double-checked that the figures you're reading at are bits per second or bytes per second?
-- (This box runs FC5, my others run FC4 & FC6, in case that's important to the thread.)
Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.
Hello, Yes I have checked with the motherboard specifications.It says that it supports a speed of 150MB/s.It is bytes for second.Though my hard disk supports native command queing my motherboard does not support it.
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Rohan Kulkarni wrote:
On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au mailto:ignored_mailbox@yahoo.com.au> wrote:
On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > My motherboard supports hard disk speed of 150MB/s but i get only > 15MB/s speed Have you double-checked that the figures you're reading at are bits per second or bytes per second? -- (This box runs FC5, my others run FC4 & FC6, in case that's important to the thread.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.
Hello, Yes I have checked with the motherboard specifications.It says that it supports a speed of 150MB/s.It is bytes for second.Though my hard disk supports native command queing my motherboard does not support it.
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It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed?
Regards,
John
On 7/2/07, John Wendel john.wendel@metnet.navy.mil wrote:
Rohan Kulkarni wrote:
On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au mailto:ignored_mailbox@yahoo.com.au> wrote:
On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > My motherboard supports hard disk speed of 150MB/s but i get only > 15MB/s speed Have you double-checked that the figures you're reading at are bits
per
second or bytes per second? -- (This box runs FC5, my others run FC4 & FC6, in case that's important to the thread.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.
Hello, Yes I have checked with the motherboard specifications.It says that it supports a speed of 150MB/s.It is bytes for second.Though my hard disk supports native command queing my motherboard does not support it.
-- fedora-list mailing list fedora-list@redhat.com <mailto:fedora-list@redhat.com> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list <https://www.redhat.com/mailman/listinfo/fedora-list>
It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed?
Regards,
John
Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks...
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On 7/3/07, Rohan Kulkarni rohan.ak1@gmail.com wrote:
On 7/2/07, John Wendel john.wendel@metnet.navy.mil wrote:
Rohan Kulkarni wrote:
On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au >> wrote:
On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > My motherboard supports hard disk speed of 150MB/s but i get
only
> 15MB/s speed Have you double-checked that the figures you're reading at are
bits per
second or bytes per second? -- (This box runs FC5, my others run FC4 & FC6, in case that's important to the thread.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.
Hello, Yes I have checked with the motherboard specifications.It says that it supports a speed of 150MB/s.It is bytes for second.Though my hard
disk
supports native command queing my motherboard does not support it.
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https://www.redhat.com/mailman/listinfo/fedora-list
< https://www.redhat.com/mailman/listinfo/fedora-list>
It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed?
Regards,
John
Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks...
Can anyone please help me...do i need to update to the latest kernel??or do i need to download some drivers.
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Rohan Kulkarni wrote:
On 7/3/07, *Rohan Kulkarni* <rohan.ak1@gmail.com mailto:rohan.ak1@gmail.com> wrote:
On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>> wrote: Rohan Kulkarni wrote: > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>> wrote: > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > My motherboard supports hard disk speed of 150MB/s but i get only > > 15MB/s speed > > Have you double-checked that the figures you're reading at are bits per > second or bytes per second? > > -- > (This box runs FC5, my others run FC4 & FC6, in case that's > important to the thread.) > > Don't send private replies to my address, the mailbox is ignored. > I read messages from the public lists. > > > > Hello, > Yes I have checked with the motherboard specifications.It > says that it supports > a speed of 150MB/s.It is bytes for second.Though my hard disk > supports native command queing my motherboard does not support it. > > -- > fedora-list mailing list > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > < https://www.redhat.com/mailman/listinfo/fedora-list> > > It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed? Regards, John Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks... Can anyone please help me...do i need to update to the latest
kernel??or do i need to download some drivers.
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You don't really have a problem!
Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s).
When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is going to be approximately 1/2 to disk speed. And now you need to add in the operating system overhead, allocating blocks for the new file, and all the seek time, moving the disk heads between the old file blocks and the new file blocks.
15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s.
Need more speed, get more disks and a raid controller.
Regards,
John
John Wendel wrote:
Rohan Kulkarni wrote:
On 7/3/07, *Rohan Kulkarni* <rohan.ak1@gmail.com mailto:rohan.ak1@gmail.com> wrote:
On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>> wrote: Rohan Kulkarni wrote: > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>> wrote: > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > My motherboard supports hard disk speed of 150MB/s
but i get only > > 15MB/s speed > > Have you double-checked that the figures you're reading at are bits per > second or bytes per second? > > -- > (This box runs FC5, my others run FC4 & FC6, in case that's > important to the thread.) > > Don't send private replies to my address, the mailbox is ignored. > I read messages from the public lists. > > > > Hello, > Yes I have checked with the motherboard specifications.It > says that it supports > a speed of 150MB/s.It is bytes for second.Though my hard disk > supports native command queing my motherboard does not support it. > > -- > fedora-list mailing list > fedora-list@redhat.com mailto:fedora-list@redhat.com <mailto: fedora-list@redhat.com mailto:fedora-list@redhat.com> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > < https://www.redhat.com/mailman/listinfo/fedora-list%3E > >
It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed? Regards, John Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks... Can anyone please help me...do i need to update to the latest
kernel??or do i need to download some drivers.
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You don't really have a problem!
Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s).
When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is going to be approximately 1/2 to disk speed. And now you need to add in the operating system overhead, allocating blocks for the new file, and all the seek time, moving the disk heads between the old file blocks and the new file blocks.
15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s.
Need more speed, get more disks and a raid controller.
Regards,
John
Don't forget on the Seagate drives to remove the little jumper to enable the SATA interface at 3.0Gb/s (assuming your motherboard can support it) since Seagate's default setting is with the jumper installed.
ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jeff
Hello, Thanks for the help.
On 7/3/07, John Wendel john.wendel@metnet.navy.mil wrote:
Rohan Kulkarni wrote:
On 7/3/07, *Rohan Kulkarni* <rohan.ak1@gmail.com mailto:rohan.ak1@gmail.com> wrote:
On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>> wrote: Rohan Kulkarni wrote: > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>> wrote: > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > My motherboard supports hard disk speed of 150MB/s but
i
get only > > 15MB/s speed > > Have you double-checked that the figures you're reading at are bits per > second or bytes per second? > > -- > (This box runs FC5, my others run FC4 & FC6, in case
that's
> important to the thread.) > > Don't send private replies to my address, the mailbox is ignored. > I read messages from the public lists. > > > > Hello, > Yes I have checked with the motherboard specifications.It > says that it supports > a speed of 150MB/s.It is bytes for second.Though my hard disk > supports native command queing my motherboard does not
support
it. > > -- > fedora-list mailing list > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > < https://www.redhat.com/mailman/listinfo/fedora-list> > > It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed? Regards, John Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks... Can anyone please help me...do i need to update to the latest
kernel??or do i need to download some drivers.
-- fedora-list mailing list fedora-list@redhat.com <mailto:fedora-list@redhat.com> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list <https://www.redhat.com/mailman/listinfo/fedora-list>
You don't really have a problem!
Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s).
When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is going to be approximately 1/2 to disk speed. And now you need to add in the operating system overhead, allocating blocks for the new file, and all the seek time, moving the disk heads between the old file blocks and the new file blocks.
15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s.
Need more speed, get more disks and a raid controller.
Regards,
John
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Hello, So will it help if I have a faster processor or I add in more RAM to my system?
On 7/3/07, John Wendel john.wendel@metnet.navy.mil wrote:
Rohan Kulkarni wrote:
On 7/3/07, *Rohan Kulkarni* <rohan.ak1@gmail.com mailto:rohan.ak1@gmail.com> wrote:
On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>> wrote: Rohan Kulkarni wrote: > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>> wrote: > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > My motherboard supports hard disk speed of 150MB/s but
i
get only > > 15MB/s speed > > Have you double-checked that the figures you're reading at are bits per > second or bytes per second? > > -- > (This box runs FC5, my others run FC4 & FC6, in case
that's
> important to the thread.) > > Don't send private replies to my address, the mailbox is ignored. > I read messages from the public lists. > > > > Hello, > Yes I have checked with the motherboard specifications.It > says that it supports > a speed of 150MB/s.It is bytes for second.Though my hard disk > supports native command queing my motherboard does not
support
it. > > -- > fedora-list mailing list > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > < https://www.redhat.com/mailman/listinfo/fedora-list> > > It doesn't matter what speed your motherboard (SATA controller) supports if the disk speed is slower. What brand/model of disk do you have? What kernel version? How are you measuring the disk speed? Regards, John Hello, I have a Seagate ST3160211AS.It is a Barracuda 160GB hard disk with a speed of 7200RPM.It supports upto 300MB/s with Native Command Queing.I checked the average speed of copying by copying a 3GB file from one FAT32 partition to another.I got a average speed of around 15MB/s.I have the kernel 2.6.21-1.3228.fc7 Thanks... Can anyone please help me...do i need to update to the latest
kernel??or do i need to download some drivers.
-- fedora-list mailing list fedora-list@redhat.com <mailto:fedora-list@redhat.com> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list <https://www.redhat.com/mailman/listinfo/fedora-list>
You don't really have a problem!
Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s).
When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is going to be approximately 1/2 to disk speed. And now you need to add in the operating system overhead, allocating blocks for the new file, and all the seek time, moving the disk heads between the old file blocks and the new file blocks.
15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s.
Need more speed, get more disks and a raid controller.
Regards,
John
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Rohan Kulkarni wrote:
Hello, So will it help if I have a faster processor or I add in more RAM to my system?
On 7/3/07, *John Wendel* < john.wendel@metnet.navy.mil mailto:john.wendel@metnet.navy.mil> wrote:
Rohan Kulkarni wrote: > > > On 7/3/07, *Rohan Kulkarni* < rohan.ak1@gmail.com <mailto:rohan.ak1@gmail.com> > <mailto:rohan.ak1@gmail.com <mailto:rohan.ak1@gmail.com>>> wrote: > > > > On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil> > <mailto:john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>>> wrote: > > Rohan Kulkarni wrote: > > > > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto: ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>> > > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto: ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>>> wrote: > > > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > > My motherboard supports hard disk speed of 150MB/s but i > get only > > > 15MB/s speed > > > > Have you double-checked that the figures you're reading at > are bits per > > second or bytes per second? > > > > -- > > (This box runs FC5, my others run FC4 & FC6, in case that's > > important to the thread.) > > > > Don't send private replies to my address, the mailbox is > ignored. > > I read messages from the public lists. > > > > > > > > Hello, > > Yes I have checked with the motherboard > specifications.It > > says that it supports > > a speed of 150MB/s.It is bytes for second.Though my > hard disk > > supports native command queing my motherboard does not support > it. > > > > -- > > fedora-list mailing list > > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto:fedora-list@redhat.com <mailto:fedora-list@redhat.com>>> > > To unsubscribe: > https://www.redhat.com/mailman/listinfo/fedora-list > > < https://www.redhat.com/mailman/listinfo/fedora-list> > > > > > > It doesn't matter what speed your motherboard (SATA controller) > supports if the disk speed is slower. What brand/model of disk > do you > have? What kernel version? How are you measuring the disk speed? > > Regards, > > John > > > > Hello, > I have a Seagate ST3160211AS.It is a Barracuda 160GB hard > disk with a > speed of 7200RPM.It supports upto 300MB/s with Native > Command Queing.I checked the average speed of copying by copying a > 3GB file from one FAT32 partition to another.I got a > average speed of around > 15MB/s.I have the kernel 2.6.21-1.3228.fc7 > Thanks... > > > > Can anyone please help me...do i need to update to the latest > kernel??or do i need > to download some drivers. > > -- > fedora-list mailing list > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto:fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > To unsubscribe: > https://www.redhat.com/mailman/listinfo/fedora-list > <https://www.redhat.com/mailman/listinfo/fedora-list> > > > You don't really have a problem! Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s). When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is going to be approximately 1/2 to disk speed. And now you need to add in the operating system overhead, allocating blocks for the new file, and all the seek time, moving the disk heads between the old file blocks and the new file blocks. 15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s. Need more speed, get more disks and a raid controller. Regards, John
Faster processor can help lots of things, but not disk speed. More memory (usually) helps, the kernel can use it for disk cache if nothing else.
Anybody else out there got any advice for speeding up SATA drives ?
Regards,
John
On 7/5/07, John Wendel john.wendel@metnet.navy.mil wrote:
Rohan Kulkarni wrote:
Hello, So will it help if I have a faster processor or I add in more RAM to my system?
On 7/3/07, *John Wendel* < john.wendel@metnet.navy.mil mailto:john.wendel@metnet.navy.mil> wrote:
Rohan Kulkarni wrote: > > > On 7/3/07, *Rohan Kulkarni* < rohan.ak1@gmail.com <mailto:rohan.ak1@gmail.com> > <mailto:rohan.ak1@gmail.com <mailto:rohan.ak1@gmail.com>>> wrote: > > > > On 7/2/07, *John Wendel* < john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil> > <mailto:john.wendel@metnet.navy.mil <mailto:john.wendel@metnet.navy.mil>>> wrote: > > Rohan Kulkarni wrote: > > > > > > On 7/2/07, *Tim* <ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto: ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>> > > <mailto:ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au> > <mailto: ignored_mailbox@yahoo.com.au <mailto:ignored_mailbox@yahoo.com.au>>>> wrote: > > > > On Mon, 2007-07-02 at 19:14 +0530, Rohan Kulkarni wrote: > > > My motherboard supports hard disk speed of 150MB/s but i > get only > > > 15MB/s speed > > > > Have you double-checked that the figures you're reading at > are bits per > > second or bytes per second? > > > > -- > > (This box runs FC5, my others run FC4 & FC6, in case that's > > important to the thread.) > > > > Don't send private replies to my address, the mailbox is > ignored. > > I read messages from the public lists. > > > > > > > > Hello, > > Yes I have checked with the motherboard > specifications.It > > says that it supports > > a speed of 150MB/s.It is bytes for second.Though my > hard disk > > supports native command queing my motherboard does not support > it. > > > > -- > > fedora-list mailing list > > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > <mailto: fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto:fedora-list@redhat.com <mailto:fedora-list@redhat.com>>> > > To unsubscribe: > https://www.redhat.com/mailman/listinfo/fedora-list > > <
https://www.redhat.com/mailman/listinfo/fedora-list%3E
> > > > > > It doesn't matter what speed your motherboard (SATA controller) > supports if the disk speed is slower. What brand/model of disk > do you > have? What kernel version? How are you measuring the disk speed? > > Regards, > > John > > > > Hello, > I have a Seagate ST3160211AS.It is a Barracuda 160GB hard > disk with a > speed of 7200RPM.It supports upto 300MB/s with
Native
> Command Queing.I checked the average speed of copying by copying a > 3GB file from one FAT32 partition to another.I got a > average speed of around > 15MB/s.I have the kernel 2.6.21-1.3228.fc7
> Thanks... > > > > Can anyone please help me...do i need to update to the
latest
> kernel??or do i need > to download some drivers. > > -- > fedora-list mailing list > fedora-list@redhat.com <mailto:fedora-list@redhat.com> <mailto:fedora-list@redhat.com <mailto:fedora-list@redhat.com>> > To unsubscribe: > https://www.redhat.com/mailman/listinfo/fedora-list > <https://www.redhat.com/mailman/listinfo/fedora-list> > > > You don't really have a problem! Don't confuse the maximum interface transfer speed (150 MB/s) with your disk transfer speed (approx 40-50 MB/s). When you copy a file, you read the old file, and then you write the new file, rinse and repeat until done. So your transfer speed is
going
to be approximately 1/2 to disk speed. And now you need to add in
the
operating system overhead, allocating blocks for the new file, and
all
the seek time, moving the disk heads between the old file blocks and the new file blocks. 15 MB/s seems reasonable. On my box, using a single drive, I get a write speed of 30 MB/s for a 3 GB file and a copy speed of 14 MB/s. Need more speed, get more disks and a raid controller. Regards, John
Faster processor can help lots of things, but not disk speed. More memory (usually) helps, the kernel can use it for disk cache if nothing else.
Anybody else out there got any advice for speeding up SATA drives ?
Regards,
John
Hello, My SATA drive provides me a copy speed of only 15MB/s while one of my friends using opensuse 10.2 with an Intel P4 and a Seagate SATA 80GB HDD gets almost double the copy speed.I use Fedora 7.Why is there such a large speed difference? Thank you
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On Fri, 2007-07-06 at 19:54 +0530, Rohan Kulkarni wrote:
SNIP!!
Hello, My SATA drive provides me a copy speed of only 15MB/s while one of my friends using opensuse 10.2 with an Intel P4 and a Seagate SATA 80GB HDD gets almost double the copy speed.I use Fedora 7.Why is there such a large speed difference? Thank you
Copy speed is affected by many things in addition to processor speed, memory, and drive physics. The head seek time, rotational speed, burst write speed, interface to the system, and internal buss speed to name just a few of the physics of the drives, all impact the drive performance and are not related to the number of "bits per second". File size vs buffer size on the drive, whether the copy was on a single drive or across drives, whether the drives were on a single buss or different busses, and other esoteric details will affect the speed. The format will also affect the speed. The raid form, whether it is stripped, or blocked, and so forth. Basically to learn what affects the speed of your particular system, you need to do lots of leg work on discovering the physical connections, the drive characteristics and so forth. Is this badly impacting your daily use of the system? If it is important to you to get the highest speed, you will want to look at possibly spending large on hardware. That is the basis of high speed, and results from the price of the hardware, and precision of the electronics to controll the servo systems for the drive speed and head movement. The other bits, which bus interfaces are used, and how they are accessed are functions of the Motherboard and/or subsystems such as add on boards either 16,32, or 64 bits, and what the interface paths to these boards are like. Again more money probably will give you a better designed MB with attending gains in speed. Processor speed is secondary to this business. Most processors today are plenty fast enough to overrun the drives, so look to other areas of the hardware. Especially on copy operations. Some systems can implement a dma-dma copy and the processor doesn't even get involved once the paths are set up, other than yeilding memory cycles for DMA (which are often not used externally anyway.)
In short, none of us can tell you why there are speed differences without a lot of data about both systems. Some folks here with raid experience may be able to suggest places to look for some "quick checks", but speed is never easy, whether it is boats, cars, motorcycles or computers.
Regards, Les H