Rusty Russell wrote: > From: Paul TBBle Hampson <[EMAIL PROTECTED]> > > This creates a file in $HOME/.lguest/ to directly back the RAM and DMA memory > mappings created by map_zeroed_pages. >
I created a test program recently that measured the latency of a reads/writes to an mmap() file in /dev/shm and in a normal filesystem. Even after unlinking the underlying file, the write latency was much better with a mmap()'d file in /dev/shm. /dev/shm is not really for general use. I think we'll want to have our own tmpfs mount that we use to create VM images. I also prefer to use a unix socket for communication, unlink the file immediately after open, and then pass the fd via SCM_RIGHTS to the other process. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
