https://lists.debian.org/debian-hurd/2014/09/msg00070.html.
For some reason, the system has become more unstable recently. I’ve seen it freeze as soon as swapping memory out. I suspect it’s because of recent changes on the ext2 file system. These changes are good but they expose existing bugs we didn’t suffer from in the past. In order to cope with that, I’ve been using a kernel with no VM object cache, and completely synchronous file system accesses.