On Sat, Sep 19, 2020 at 6:36 AM Vivek Goyal <vgo...@redhat.com> wrote: > > Hi All, > > virtiofsd default thread pool size is 64. To me it feels that in most of > the cases thread pool size 1 performs better than thread pool size 64. > > I ran virtiofs-tests. > > https://github.com/rhvgoyal/virtiofs-tests > > And here are the comparision results. To me it seems that by default > we should switch to 1 thread (Till we can figure out how to make > multi thread performance better even when single process is doing > I/O in client). >
FWIW, we've observed the same behavior in crosvm. Using a thread pool for the virtiofs server consistently gave us worse performance than using a single thread. Chirantan
