Hi, I am trying to make some modifications to the live migration part of Xen code. As a first step in this direction i want to figure out how many pages were dirtied in each round of live migration. I compiled the latest xen-unstable-4.2 version. Through some effort i have been able to figure out that the sending part of live migration code resides in xen-unstable/tools/libxc/xc_domain_save.c. This file has a number of DPRINTF statements in it, but i don''t see these statements in either /var/log/xen/xend.log or xend-debug.log. Where do these DPRINTF statements go ? How do i turn these DPRINTF statements on ? Thanking you, Rahul.