[Libguestfs] Effect of memsize
Richard W.M. Jones
rjones at redhat.com
Thu Jun 30 16:53:28 UTC 2011
Marek, here are my results from a simple and small read-only test.
The test is to run the command below 3 times in a row for each memory
setting, and take the elapsed time of only the final run.
guestfish --ro -i -d F14x64 \
inspect-list-applications /dev/vg_f13x64/lv_root > /dev/null
The test machine is my laptop which has 4GB of RAM and is mostly idle.
257 0m14.908s [note 1]
500 0m14.773s [note 2]
8192 0m14.908s [note 3]
32768 0m17.580s [note 3]
Apart from the 32GB guest, those times are well within the margin of
variability. Essentially they all take the same amount of time except
for the last one.
 Minimum permitted size.
 Default setting.
 I had to enable Linux memory overcommit for this test.
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
More information about the Libguestfs