Garmin USB slow transfer?

wickedsprint · 05-28-2005, 09:30 AM

Maybe one of you guys or gals can help me out, my 96C (same case as the 76C) takes forever to load mapsets via USB, tried two different cables and 3 different usb ports. I remember my last gps being a bit quicker. For example, to load 118mb is taking about 22 minutes and 56mb is taking 10 minutes, I seem to remember times about half that. The computer is about 3-4 years old, but I thought USB was supposed to have more than a 12X speed advantage over serial, or am I wrong?

Kingsqueak · 05-28-2005, 10:48 AM

USB speed depends on the device attached and the controller on the PC itself. Add to that the memory you are writing to as well.

I have an mp3 player with 512MB flash in it, takes a good 45 minutes to load that.

The SD card on a USB dongle for my iFinder GPS took about 10 mins to load roughly a 240MB map file. That of course leaves out the fact that it took almost 90 minutes to generate the freaking file in the map software ;-).

The speeds vary widely from device to device and generally there isn't much to do about it. About the only other tip I can give you is to try to avoid any other input/output operations on the system at the same time. IOW, don't stream mp3 files while you're loading over USB, don't run giant files in Photoshop or Director at the same time etc. Try to avoid reading or writing from other devices/disc while loading up the GPS.

yzf1kr · 05-28-2005, 11:00 AM

Sending the maps to the GPS does not take a lot af time, but building the map and index files takes the most time.

Look at what the transfer window in mapsource says, you wil see that most time (80%) is spend on building the file.

BurnieM · 05-28-2005, 03:37 PM

Takes me 9 minutes to load 187 MB of mapping to my GPSmap 276C
This is build time plus USB load time.

PC is a Pent III 1 GHz running Windows 2000 SP4

wickedsprint · 05-28-2005, 04:32 PM

That is why i think mine is slow, it takes 22 minutes to load 118mb after the mapsource program does its thing, I am running a P4 at 2.4 ghz with 512mb of ram. Thanks for the replies, maybe I will try checking some other things.

yzf1kr · 05-29-2005, 01:11 PM

Have you got any other USB devices connected? (Wifi or HD)

05-28-2005, 09:30 AM	#1
wickedsprint Banned Joined: Oct 2004 Location: USA Oddometer: 2,386	Garmin USB slow transfer? Maybe one of you guys or gals can help me out, my 96C (same case as the 76C) takes forever to load mapsets via USB, tried two different cables and 3 different usb ports. I remember my last gps being a bit quicker. For example, to load 118mb is taking about 22 minutes and 56mb is taking 10 minutes, I seem to remember times about half that. The computer is about 3-4 years old, but I thought USB was supposed to have more than a 12X speed advantage over serial, or am I wrong?

05-28-2005, 03:37 PM	#4
BurnieM Nipple boy Joined: Sep 2003 Location: Sydney, Australia Oddometer: 2,934	Takes me 9 minutes to load 187 MB of mapping to my GPSmap 276C This is build time plus USB load time. PC is a Pent III 1 GHz running Windows 2000 SP4 __________________ . www.rockymoto.com.au Parts and accessories for your adventure bike

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05-28-2005, 10:48 AM	#2
Kingsqueak Wannabe Joined: May 2005 Location: Monmouth County, NJ Oddometer: 713	USB speed depends on the device attached and the controller on the PC itself. Add to that the memory you are writing to as well. I have an mp3 player with 512MB flash in it, takes a good 45 minutes to load that. The SD card on a USB dongle for my iFinder GPS took about 10 mins to load roughly a 240MB map file. That of course leaves out the fact that it took almost 90 minutes to generate the freaking file in the map software ;-). The speeds vary widely from device to device and generally there isn't much to do about it. About the only other tip I can give you is to try to avoid any other input/output operations on the system at the same time. IOW, don't stream mp3 files while you're loading over USB, don't run giant files in Photoshop or Director at the same time etc. Try to avoid reading or writing from other devices/disc while loading up the GPS.

05-28-2005, 11:00 AM	#3
yzf1kr Adventurer Joined: Jul 2004 Oddometer: 48	Sending the maps to the GPS does not take a lot af time, but building the map and index files takes the most time. Look at what the transfer window in mapsource says, you wil see that most time (80%) is spend on building the file.

05-28-2005, 04:32 PM	#5
wickedsprint Banned Joined: Oct 2004 Location: USA Oddometer: 2,386	That is why i think mine is slow, it takes 22 minutes to load 118mb after the mapsource program does its thing, I am running a P4 at 2.4 ghz with 512mb of ram. Thanks for the replies, maybe I will try checking some other things.

05-29-2005, 01:11 PM	#6
yzf1kr Adventurer Joined: Jul 2004 Oddometer: 48	Have you got any other USB devices connected? (Wifi or HD)