Linked by Thom Holwerda on Mon 18th Jun 2007 17:24 UTC
Hardware, Embedded Systems "Although USB connectors in monitors appeared many years ago, they have performed only secondary functions all this time. However, now Samsung offers an LCD monitor that is connected to the PC via the USB bus and can work without a graphics card."
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RE: One connector to rule them all
by helf on Mon 18th Jun 2007 18:30 UTC in reply to "One connector to rule them all"
helf
Member since:
2005-07-06

How fast is your cpu and are you using usb 1.1 or usb2.0? I've never had any of my systems struggle with my 500gb external usb drive.. and thats on a p3-933 with usb 1.1 and a p3-1.4 with a usb2.0 pci card...

Reply Parent Bookmark Score: 2

RandomGuy Member since:
2006-07-30

My CPU is an AMD64 3000+ and I'm using USB 2.0.
I'm transferring lots of small files in hundreds of different directories (if this makes a difference).

I got the drive one or two weeks ago and haven't had the time yet to check if it needs to be that slow and CPU intensive.
Ok, USB uses more CPU than Firewire but near 100% at under 10 MB/s seems pathetic to me ;)

I mean, it doesn't really matter because I only use it for backups, but still.
I'd of course appreciate if anybody had an idea what's wrong with my pc and/or external hdd (which is only 80GB, btw.).
Thanks in advance ;)

Edited 2007-06-18 18:51 UTC

Reply Parent Bookmark Score: 1

sbergman27 Member since:
2005-07-24

For reference, here are some bonnie++ results for a 250GB LaCie USB 2.0 drive connected to a 3.4GHz Pentium 4 box running Fedora Core 6:


Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
excelsior-b.loca 1G 30625 11 13977 4 26549 2 151.9 0


BTW, is there a way to force a fixed width font here?

Edited 2007-06-18 18:59

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Kroc Member since:
2005-11-10

This is why I only use Firewire for external disks. USB is slow as hell to initialise, eats CPU all the time, struggles with lots of small files, and is slower than Firewire in actual real use (despite being a faster bus on paper).

Apple were way ahead of the game with Firewire, they should have licenced it for free and they probably wouldn't have been supplanted by USB, but that's Apple arrogance for you ;)

Reply Parent Bookmark Score: 4

Lettherebemorelight Member since:
2005-07-11

I'd of course appreciate if anybody had an idea what's wrong with my pc and/or external hdd (which is only 80GB, btw.).

Have you tried updating your chipset drivers lately? Also (if you have any PATA disks) you might want to try going into device manager and making sure your IDE ATA/ATAPI controllers are set to use DMA if available. If something is set to PIO mode that will cause some major slow downs.

Reply Parent Bookmark Score: 2