[Angstrom-devel] Poor write speed to USB-Stick on beagleboard

2011-09-21 Thread Hauser, Wolfgang (external)
Hello, we imagined a poor speed while writing to USB-Sticks (USB 2.0) on BeagleboardxM (OMAP3570). Reading from the same Devices has the expected speed. We use the linux-omap-psp-2.6.32 Kernel with an Angstrom based Linux system from Openembedded 2011.03-maintenance. Have someone imagined this

Re: [Angstrom-devel] Poor write speed to USB-Stick on beagleboard

2011-09-21 Thread Koen Kooi
Op 21 sep. 2011, om 11:33 heeft Hauser, Wolfgang (external) het volgende geschreven: Hello, we imagined a poor speed while writing to USB-Sticks (USB 2.0) on BeagleboardxM (OMAP3570). Reading from the same Devices has the expected speed. We use the linux-omap-psp-2.6.32 Kernel with an

Re: [Angstrom-devel] Poor write speed to USB-Stick on beagleboard

2011-09-21 Thread Hauser, Wolfgang (external)
How did you measure the speed? Mount options play a big part in perceived speed, but it could also be a generic omap ehci bug. We played arround a bit, the raw writing speed is acceptable (dd if=/dev/urandom of=/dev/sda bs=4k count=1000 - 525 kbit/s). It seems it is the filesystem which makes