On Tue, Aug 20, 2019 at 11:16 AM Stefan Hajnoczi <stefanha@xxxxxxxxxx> wrote: > > On Thu, Aug 15, 2019 at 08:30:43AM +0800, wangyan wrote: > > Hi all, > > > > I met a performance problem when I tested buffer write compared with 9p. > > CCing Miklos, FUSE maintainer, since this is mostly a FUSE file system > writeback question. This is expected. FUSE contains lots of complexity in the buffered write path related to preventing DoS caused by the userspace server. This added complexity, which causes the performance issue, could be disabled in virtio-fs, since the server lives on a different kernel than the filesystem. I'll do a patch.. Thanks, Miklos
