My domU''s memory usage is around 512 MB , but it is alloted with 4GB of memory. When i try to xm mem-set and reduce memory on a domU, the memory doesnt decrease to the value specified ( even though the domU is idle and memory is not used up at all ) here is my xen version .. [root@unixfoo ~]# xm info host : unixfoo release : 2.6.18-xen version : #1 SMP Thu Mar 22 14:12:23 PDT 2007 machine : i686 nr_cpus : 1 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 1 threads_per_core : 1 cpu_mhz : 2394 hw_caps : bfebfbff:00000000:00000000:00000080:00004400 total_memory : 503 free_memory : 53 xen_major : 3 xen_minor : 0 xen_extra : -unstable xen_caps : xen-3.0-x86_32p xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xf5800000 xen_changeset : unavailable cc_compiler : gcc version 3.4.6 20060404 (Red Hat 3.4.6-3.1) cc_compile_by : root cc_compile_domain : localhost cc_compile_date : Thu Mar 22 14:12:26 PDT 2007 xend_config_format : 3 [root@unixfoo0~]# any pointers? un1xf00 http://unixfoo.blogspot.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com