External USB20 HDD writingspeed?

[Pvest]

I have a Maxtor 300Gb USB 2.0 harddrive and when I did a benchmark (with FreshDevise), it gave med this speed:

Write 1.1 Mb/s,

Read 60.5Mb/s speed.

I also know that the spec for USB2.0 480Mbps, but not really sure how to read different benchmark speed I get!?

But can anybody confirm that a USB 2.0 writing-speed on 1.1Mb/s is what I could expect, or is there anything wrong here??



Pvest

 

[Rod Speed]

I have a Maxtor 300Gb USB 2.0 harddrive and when I did
a benchmark (with FreshDevise), it gave med this speed:
Write 1.1 Mb/s,
Read 60.5Mb/s speed.

Try a different benchmark.

I also know that the spec for USB2.0 480Mbps, but not
really sure how to read different benchmark speed I get!?

Either the benchmark is having a massive brain fart
or there is something seriously wrong somewhere.

But can anybody confirm that a USB 2.0 writing-speed
on 1.1Mb/s is what I could expect,

No its not, it should be a hell of a lot better than that.

or is there anything wrong here??

Yep.

 

[Pvest]

Try a different benchmark.


Either the benchmark is having a massive brain fart
or there is something seriously wrong somewhere.


No its not, it should be a hell of a lot better than that.


Yep.

Thanks for the response on my posting, it made me start thinking again! )

The thing is that I just made a new clean XP Home install on my
FujitsiSiemens pc and after your posting I "found" a USB 2.0 patch CD among
the disks I got when I bought the pc for a few years ago.

So after installing this patch, the speed increased to:

Writing 5Mb/s

Reading 267Mb/s

As I can understand, my USB ports must have been USB1.1 before patching it
and after patching I now have USB 2.0!!



Pvest

 

[Folkert Rienstra]

Thanks for the response on my posting, it made me start thinking again! )

The thing is that I just made a new clean XP Home install on my
FujitsiSiemens pc and after your posting I "found" a USB 2.0 patch CD among
the disks I got when I bought the pc for a few years ago.

So after installing this patch, the speed increased to:

Writing 5Mb/s

Reading 267Mb/s

As I can understand, my USB ports must have been USB1.1 before patching it
and after patching I now have USB 2.0!!

You think huh? Don't you know that that is dangerous?

USB1.1 is 12Mb/s btw so better think again.

 

[Rod Speed]

Thanks for the response on my posting, it made me start thinking again! )

Too radical for me |-)

The thing is that I just made a new clean XP Home install on my
FujitsiSiemens pc and after your posting I "found" a USB 2.0 patch CD among the disks I
got when I bought the pc for a few years ago.

So after installing this patch, the speed increased to:

Writing 5Mb/s

That is still MUCH too low. I doubt the benchmark myself.

Reading 267Mb/s

As I can understand, my USB ports must have been USB1.1 before patching it and after
patching I now have USB 2.0!!

The write speed is still FAR too low for USB2.

 

[Fabien LE LEZ]

So after installing this patch, the speed increased to:

Writing 5Mb/s

(I assume those are megabits, not megabytes)

Definitely not a sensible value.
If you have a fixed hard disk inside your PC, try copying a big file
(or a bit set of files) [at least 1 GB] to the USB drive, and see for
yourself how much time it takes.

 

[Arno Wagner]

I have a Maxtor 300Gb USB 2.0 harddrive and when I did a benchmark
(with FreshDevise), it gave med this speed:

Write 1.1 Mb/s,

Far too slow. Unless it runs on al older USB 1.0 port. You should
get something like 10...20MB/s.

Read 60.5Mb/s speed.

The is too fast. This would be faster than the 480Mb/s (=60MB/s)
that USB 2,0 can do. Not that you can get this speed in practical use,
since it is raw speed. Signalling and delays reduce the speed you
can really get.

I also know that the spec for USB2.0 480Mbps, but not really sure
how to read different benchmark speed I get!?

I would say a broken benchmark program for the read speed.

But can anybody confirm that a USB 2.0 writing-speed on 1.1Mb/s is
what I could expect, or is there anything wrong here??

If it is an USB 2.0 port running with USB2.0 drivers, then something is
wrong. For USB 1.0 (or USB 2.0 without USB 2.0 drivers) the speed is
fine.

But before you jump to conclusions, do a manual benchmark with
a large file you copy to the drive and a stopwatch.

Arno

 

[Alexander Grigoriev]

Another consideration is that in XP, external harddrives don't have lazy
write enabled by default. If the benchmark program is using single block
writes, it may slow things down. Lazy write can be enabled in the drive's
properties.

 

[Arno Wagner]

Another consideration is that in XP, external harddrives don't have lazy
write enabled by default. If the benchmark program is using single block
writes, it may slow things down. Lazy write can be enabled in the drive's
properties.

Good point.

Arno

 

[Folkert Rienstra]

(I assume those are megabits, not megabytes)

Yes Fabien, that's why it's written Mb, and not MB.

Definitely not a sensible value.

Like 60.5MB/s would be yet a sensible value for USB, Fabien?

If you have a fixed hard disk inside your PC, try copying a big file

(or a bit set of files)

Whatever that is.

[at least 1 GB]

Like you need a bloody 40 seconds to time the speed accurately to a 2 to 3% accuracy.
10 seconds worth (~250MB) should be enough for an ~10% accurate
(+/- 1 sec.) reading of the transfer speed.

 

[Folkert Rienstra]

And this explains the also utterly appalling read rate how?

Good point.

Clueless, as always.

Arno

[snip]

[snip]

 

[Folkert Rienstra]

Far too slow.

Unless it runs on al older USB 1.0 port.

In which case it is still far too slow.

You should get something like 10...20MB/s.

30-35MB/s preferably.

The is too fast.

Nope, that's bloody slow.

This would be faster than the 480Mb/s (=60MB/s) that USB 2,0 can do.

60.5Mb/s is obviously faster than 480Mb/s, only an idiot would disagree.
Uncanny, how you always appear to make perfect sense, babblebot.

Not that you can get this speed in practical use, since it is raw speed.
Signalling and delays reduce the speed you can really get.

Babble babble babble, rant.

I would say a broken benchmark program for the read speed.

Like the write speed is normal.

If it is an USB 2.0 port running with USB2.0 drivers, then something is
wrong.

For USB 1.0 (or USB 2.0 without USB 2.0 drivers) the speed is fine.

Pity how you just said above that it was wrong. So busy babbling that
it can't even manage to keep track of what it says in the same post.