Re: [PATCH-v3 0/5] random: replace urandom pool with a CRNG

2016-05-30 Thread Theodore Ts'o
On Mon, May 30, 2016 at 10:53:22AM -0700, Andi Kleen wrote: > > It should work the same on larger systems, the solution scales > naturally to lots of sockets. It's not clear it'll help enough on systems > with a lot more cores per socket, like a Xeon Phi. But for now it should > be good enough. O

Re: [PATCH-v3 0/5] random: replace urandom pool with a CRNG

2016-05-30 Thread Andi Kleen
> In addition, on NUMA systems we make the CRNG state per-NUMA socket, to > address the NUMA locking contention problem which Andi Kleen has been > complaining about. I'm not entirely sure this will work well on the > crazy big SGI systems, but they are rare. Whether they are rarer than It shoul

[PATCH-v3 0/5] random: replace urandom pool with a CRNG

2016-05-29 Thread Theodore Ts'o
By using a CRNG to replace the urandom pool, we address a number of complaints which Stephan Mueller has been concerned about. We now use a much more aggressive interrupt sampling system to quickly initialize a CRNG which gets used in place of the original non-blocking pool. This tends to get init