Michael van Elst <mlel...@serpens.de> writes: > On Fri, Dec 28, 2018 at 09:19:39AM -0500, Brad Spencer wrote: >> mlel...@serpens.de (Michael van Elst) writes: >> > It should only happen after some larger uptime when kernel memory >> > might be too fragmented. >> >> I see this with a USB CDROM drive on a Xen DOM0 with no USB3 involved. >> I have to take to keeping the drive hooked up when the DOM0 boots in >> order to get it to work. It did not take long uptime for this to fail >> for me after boot up. > > The Dom0 is probably more demanding and fragments memory quickly. So > yes, keeping the drive hooked up when booting is necessary. > > > Greetings,
I am sure that this is a big part of the problem. The USB2 system that does this all of the time for me has a high guest / CPU ratio and a pretty small amount of DOM0 memory. My USB3 DOM0 systems never seem to have this trouble, but they are also more -current and have a much smaller guest / CPU ratio and a lot more DOM0 memory. -- Brad Spencer - b...@anduin.eldar.org - KC8VKS - http://anduin.eldar.org
