Date: Mon, 22 Jul 2013 10:29:55 +0200 From: =?ISO-8859-1?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com> To: Jeroen van der Ham <jeroen@dckd.nl> Cc: "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>, "Justin T. Gibbs" <gibbs@freebsd.org>, xen-devel <xen-devel@lists.xen.org>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>, "xen-users@lists.xen.org" <xen-users@lists.xen.org> Subject: Re: FreeBSD PVHVM call for testing Message-ID: <51ECED83.9020905@citrix.com> In-Reply-To: <4A595D02-7B79-4C6C-9356-55FA9E45EDDC@dckd.nl> References: <519131D8.9010307@citrix.com> <519E54DE.5090304@citrix.com> <51B5E730.6070007@citrix.com> <51B9FF53.2020901@citrix.com> <4A595D02-7B79-4C6C-9356-55FA9E45EDDC@dckd.nl>
next in thread | previous in thread | raw e-mail | index | archive | help
On 22/07/13 09:18, Jeroen van der Ham wrote: > Hi, > > After some more testing I thought it would be good to put this into production for my personal server. I've used pvhvm_v19 and built it without debugging options and installed it on a FreeBSD 9.1 system. > > I've run into some hiccups with 9.1 user land and a 10-CURRENT kernel, but that's all solvable[0]. > > My VPS has some very limited memory (256M), but I've compensated with swap space (1G) Is your guest running a 32bit or a 64bit kernel? Could you also provide the config file used to launch your guest and the Xen and Dom0 kernel versions? > > Now anytime I'm putting the system under stress, by building ports or by running a git clone on the kernel repository here, I'm seeing a lot of messages about swap_pager: > >> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 132545, size: 4096 > > The system also becomes very sluggish and sometimes unresponsive. > The weird thing was that one of these messages happened right after a reboot when I rebuilt an outdated port and on the main console was checking the swap memory: > >> jeroen:~/ $ swapinfo [8:13:29] >> Device 1K-blocks Used Avail Capacity >> /dev/ada0p2 524288 2484 521804 0% >> /dev/md0 1048576 2364 1046212 0% >> Total 1572864 4848 1568016 0% >> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 131424, size: 4096 > > > Is anyone else seeing something similar? Could you also try a HEAD XENHVM kernel (without my patches), to see if the issue is related to my changes or to some bug already present in HEAD? > I certainly did not experience something like this on 9.0 with a XENHVM kernel. > > If necessary I can rebuild a kernel with debugging support and do some more recording of what is actually going on. > > Jeroen. > > > [0]: I have edited bsd.port.mk to always apply the FBSD10_FIX, and for version checking I am running "pkg version" with UNAME_r=9.1-RELEASE. >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?51ECED83.9020905>