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reboot when I rebuilt an outdated port and on the main console was checking the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.
>