On 12/05/2016 08:56 AM, Stefan Hajnoczi wrote: <snip> > Karl: do you have time to run a bigger suite of benchmarks to identify a > reasonable default poll-max-ns value? Both aio=native and aio=threads > are important. > > If there is a sweet spot that improves performance without pathological > cases then we could even enable polling by default in QEMU. > > Otherwise we'd just document the recommended best polling duration as a > starting point for users. >
I have collected a baseline on the latest patches and am currently collecting poll-max-ns=16384. I can certainly throw in a few more scenarios. Do we want to stick with powers of 2 or some other strategy? -- Karl Rister <kris...@redhat.com>
