Re: [linux-usb-devel] usb 2.0 driver performance issue

2007-06-16 Thread Alan Stern
On Sat, 16 Jun 2007, manoj mathai wrote: > On 6/6/07, Alan Stern <[EMAIL PROTECTED]> wrote: > > Can you find out which process is using a lot of CPU time? Or do you > > think the problem is simply that too much memory is being used for > > buffers? > > i ran 'top' this time when i was performing

Re: [linux-usb-devel] usb 2.0 driver performance issue

2007-06-06 Thread Jiri Kosina
On Tue, 5 Jun 2007, Alan Stern wrote: > What you need to do is reduce the amount of memory used for I/O buffers. > However I don't know how you can control it. Maybe people on LKML can > provide some advice. Playing with /proc/sys/vm/dirty* might be worthwile. -- Jiri Kosina --

Re: [linux-usb-devel] usb 2.0 driver performance issue

2007-06-05 Thread Alan Stern
On Tue, 5 Jun 2007, manoj mathai wrote: > hi, > > I am Manoj from Mumbai, India. I am having problems with my USB 2.0 > pen drive on linux. i am having the same problem on almost all linux > distros i tried and i think it might have something to do with the > linux usb drivers. i am not sure thou