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Old Sep 11th, 2005, 01:04 AM   #1
krs
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Program to measure firewire and USB transfer speeds

Is there a program for OS X that will measure actual transfer speeds of external firewire and USB 2.0 hard drives and DVD burners?
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Old Sep 11th, 2005, 01:05 AM   #2
 
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Yes
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Old Sep 11th, 2005, 01:07 AM   #3
 
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There is
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Old Sep 11th, 2005, 01:07 AM   #4
 
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but not for you, kind sir.
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Old Sep 11th, 2005, 01:35 AM   #5
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Funny - Ha ha -very funny

Last edited by krs; Sep 11th, 2005 at 01:47 AM.
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Old Sep 11th, 2005, 07:40 PM   #6
 
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You have many options - I'm not sure if you are looking for a free one or not.

There is the excellent Disktester
http://diglloyd.com/diglloyd/softwar...ter/index.html

The average xbench
http://www.xbench.com/

The Intech Suite
http://www.speedtools.com/STUS.shtml

FWB is still selling Drivetest (I d/l the demo and I can still test my drives)
http://www.fwb.com/html/drivetest.html
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Old Sep 11th, 2005, 11:37 PM   #7
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Thank you - you are a gentleman and a scholar.
I was going to delete the 'gentleman', but then I noticed that you did provide a useful reply in less than a day.

A 'free' utility would of course be better if it does the job. I'm just going to use this on a very casual basis so it's not worth a lot of money for me.

I tried X-bench and Drivetest.

Not sure i trust the X-bench results, some of them vary a lot from test to test...almost 100% for some of the CPU tests.

But then again, I was really trying to figure out how fast or slow my firewire connections are and if it matters if I use the built-in firewire or the add on firewire PCI card.
Drivetest seems to be good for that. but if I look for one single representative number, which particular test should I run to be most representative of a real live situation?
People always quote a relatively narrow range of values for transfer speed, I get a pretty wide range depending on block size and type of test.
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Old Sep 12th, 2005, 12:18 AM   #8
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It's very hard as to be accurate you need to measure speed across the disc to get a true picture - so comparing an empty fresh drive will be different than a stuffed unit with free space only in the slowest area of the drive.

Also most real life activity is of a read/write nature not continuous and not contiguous either so many other factors come into play not the least of which is file size.

Caching is also hard to measure but easy to see as a "speed factor".

I'm sorry but there is no straightforward "number".

Data density and cache are paramount and comparing Firewire drives generally a useless endeavour as they are limited by the bus ( except FW 800 ) - NOT the drive.



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Old Sep 12th, 2005, 12:23 AM   #9
 
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There is also Granite SMARTVue.
This will test larger files and can be used to see how your drives perform when they are full.
I don't know if you are using FW400 or FW800 and what is your rig. With FW400, your bus will limit your transfer speed.
I have seen some differences depending what kind of hard drive you are using in an enclosure, so you have many factors at work there.

That said, there are some better enclosures out there.
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Old Sep 12th, 2005, 04:39 AM   #10
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Quote:
Originally Posted by ArtistSeries
............. With FW400, your bus will limit your transfer speed.
I have seen some differences depending what kind of hard drive you are using in an enclosure, so you have many factors at work there.
I'm actually primarily interested in the transfer speed of the FW400 connection.
All I have is FW400, no 800.
But there are a few different enclosures (all with 7200rpm drives various sizes) and also two different types of FW 400 ports on the Mac where I wanted to see if there is a significant difference between them.

One question (hope it doesn't sound too stupid) -
When I do a large file transfer, say 20 Gigs, would the drivetest results with the largest block be the most representative of what I get in real life? ie when I actually do the 20 Gig transfer.
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