henry ritzlmayr wrote:
Am Mittwoch, den 11.06.2008, 10:06 -0700 schrieb MHR:
On Wed, Jun 11, 2008 at 8:36 AM, Ruslan Sivak <russ@xxxxxxxxxx> wrote:
I guess it has something to do with the ballooning driver for Dom0. It
looks like I just tried to allocation too much memory to DomU and the box
went down hard. I think there's a setting in xen to the min amount of
memory to go down to, but I'm not sure why Dom0 is using 600mb of RAM. Is
there a mini installation of CentOS that I can do that would use less RAM?
I've already unchecked all the boxes when installing CentOS. I would like
Dom0 to be as small as possible, both due to RAM usage and from a security
perspective.
I've not familiarized myself with xen yet, but have you considered
VMware Server? I haven't had any serious problems with it, and none
at all since v1.0.5 came out (1.0.6 is the current one). Works
nicely, stays within its memory allocation, and top et al work as
you'd expect them to.
HTH
mhr
I evaluated VMware Server myself (v1.0.3) and at that time, Disk I/O was
pretty bad within a virtual machine. The only solution I found was XEN
with paravirtualization. Has there been any progress on that with later
releases?
For example:
dd if=/dev/md5 of=/dev/null bs=1M count=1000 on bare metal gave 272 MB/s
same within VMware gave only 47,9 MB/s
I know that dd is not a benchmark - but for measuring sequential reads
within a system its fair enough for me.
Henry
This was another reason that I went with Xen, although my testing method
at the time was flawed. I've been using hdtune to measure windows
performance, but it was giving me 70mb/s across the board. I'm using
IOmeter now and I will try to reinstall VMWare to see what the
performance difference is.
Russ
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