> On Aug 16, 2017, at 4:02 PM, Trond Myklebust <trondmy@xxxxxxxxxxxxxxx> wrote: > > On Wed, 2017-08-16 at 12:43 -0400, Chuck Lever wrote: >>> On Aug 16, 2017, at 12:19 PM, Trond Myklebust <trond.myklebust@prim >>> arydata.com> wrote: >>> >>> Sometimes, we only want to know that the RPC message is in the >>> process >>> of being transmitted. Add a function to allow that. >> >> The last time I tried these last two, they resulted in a significant >> performance regression. Is there anything I can do to help track >> that down? > > If they are the root cause of a performance regression, then I'll just > drop them. I've been rebasing to ensure that I keep them at the end of > the queue precisely because I was unsure of their effect on overall > performance. My experience was applying the whole stack of the original 20 resulted in some performance degradations (fio). Popping these two from that stack restored performance across the suite of tests I was doing. -- Chuck Lever -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
