Subject: Re: Xen2/NetBSD 3.1 DomU running slowly
To: Stephen Borrill <email@example.com>
From: Johan Ihren <firstname.lastname@example.org>
Date: 05/31/2007 10:51:25
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> Every now and then I get reports of a customer's DomU running
> slowly and, sure enough, when I connect it takes ages to login.
> However, it's running at 100% idle and the other DomU on the same
> box is fine. A reboot of the DomU fixes it. When it happened today,
> I saw the following on the Dom0 console (which is running quickly
> and responsively):
> xen_shm_map: ENOMEM
> xen_shm_map: ENOMEM1
> xvif3.0: can't map packet page
> The first two are debugging, I believe, but the third looks
> The kernels are 3.1_STABLE from 20th Nov 2006. Have there been
> pullups that fix this, i.e. should I be updating? I'm not in a
> position to upgrade to NetBSD 4.0/Xen3 at the moment.
I've seen the same console messages, repeatedly, in a Xen2/NetBSD
4.0beta2 environment (both DOM0 and DOMU) from Dec'06/Jan'07.
I've not noticed the extreme slowness of the DOMUs though, but have
not looked for it either.
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