Hi, In a previous post (1), I mentioned issues seen while ballooning a large amount of memory. In the current code, the ballooning process only has 33 seconds to complete, or the xl operation (i.e. domain create) will fail. When a lot of ballooning is required, or the host is very slow to balloon memory, this delay is not sufficient.
The code involved is tools/libxl/xl_cmdimpl.c:freemem. This function retries 3 times, and each retry includes a 10 second delay in libxl_wait_for_free_memory and a 1 second delay in libxl_wait_for_memory_target. Is there a better approach, which would account for ballooning operations that take a much longer time to complete? The easiest option is to simply increase the retry count, but that would again leave us with a fixed window of time for an operation to complete. It seems like something that monitors the balloon process, and continues to wait if it is progressing, might be a better approach. Any ideas? Thanks, Mike 1. http://lists.xen.org/archives/html/xen-devel/2014-12/msg01443.html _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
