Hi, On Tue, Jun 20, 2006 at 01:37:41AM -0700, Andrew Morton wrote: > On Mon, 19 Jun 2006 10:21:54 +0200 > Andreas Mohr <[EMAIL PROTECTED]> wrote: > > > I'm having severe issues with cdrecord aborting with "buffer underrun" > > message, *always*. Problem nailed, see below. > > [hald polling causes cdrecord to go bad on a USB CD drive] > > One possible reason is that we're shooting down the device's pagecache by > accident as a result of hald activity. This shouldn't happen, but still. > Could you please do > > `watch -n1 cat /proc/meminfo' and/or `vmstat 1' > > then run cdrecord > > then wait a bit > > then run hald, see if the amount of pagecache (/proc/meminfo:Buffers or > /proc/meminfo:Cached) suddenly decreases. > > If the answer is "no" then I guess there's some unpleasant interaction > happening at the USB level
"no": both values don't show any noticeable decrease whatsoever upon a second parallel open() of the device which makes burning abort. It seems to be a USB thingy, as I will show in my next mail. Andreas Mohr _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
