Re: [linux-usb-devel] anomalous slowdown on USB control message latencies with 2.6.x

2006-04-06 Thread Alan Stern
On Thu, 6 Apr 2006, Tommi Kyntola wrote: > Actually we're using both, but the 300MHz I was referring to earlier has ohci. > > I read through the control message handling again, and while I was searching > for timeouts earlier this time I checked the transfer size manipulation and > indeed > it p

Re: [linux-usb-devel] anomalous slowdown on USB control message latencies with 2.6.x

2006-04-06 Thread Tommi Kyntola
Alan Stern wrote: On Wed, 5 Apr 2006, Tommi Kyntola wrote: (I'm not on the list, so please cc me replies) IN SHORT: I'm experiencing some weird behavior when sending control messages to USB endpoints using usb(dev)fs ioctls. Firstly, 2.6 is significantly slower than 2.4 (by a factor of 4). Se

Re: [linux-usb-devel] anomalous slowdown on USB control message latencies with 2.6.x

2006-04-05 Thread Alan Stern
On Wed, 5 Apr 2006, Tommi Kyntola wrote: > (I'm not on the list, so please cc me replies) > > IN SHORT: > I'm experiencing some weird behavior when sending control messages > to USB endpoints using usb(dev)fs ioctls. Firstly, 2.6 is significantly > slower than 2.4 (by a factor of 4). Secondly, co