On 03/08/2012 06:29 PM, Akshay Karle wrote: > Hi, > > We are undergraduate engineering students of Maharashtra Academy of > Engineering, Pune, India and we are working on a project entitled > 'Transcendent Memory on KVM' as a part of our academics. > The project members are: > 1. Ashutosh Tripathi > 2. Shreyas Mahure > 3. Nishant Gulhane > 4. Akshay Karle > > --- > Project Description: > What is Transcendent Memory(tmem in short)? > Transcendent Memory is a memory optimization technique for the > virtualized environment. It collects the underutilized memory of the > guests and the unassigned(fallow) memory of the host and places it into > a central tmem pool. Indirect access to this pool is then provided to the guests. > For further information on tmem, please refer the article on lwn by Dr. > Dan Magenheimer: > http://lwn.net/Articles/454795/ > > Since kvm is one of the most popular hypervisors available, > we decided to implement this technique for kvm. > > Any comments/feedback would be appreciated and will help us a lot with our work. > One of the potential problems with tmem is reduction in performance when the cache hit rate is low, for example when streaming. Can you test this by creating a large file, for example with dd < /dev/urandom > file bs=1M count=100000 and then measuring the time to stream it, using time dd < file > /dev/null with and without the patch? Should be done on a cleancache enabled guest filesystem backed by a virtio disk with cache=none. It would be interesting to compare kvm_stat during the streaming, with and without the patch. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
