Re: [PATCH v2 5/6] SUNRPC: Add a function to allow waiting for RPC transmission

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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.

-- 
Trond Myklebust
Linux NFS client maintainer, PrimaryData
trond.myklebust@xxxxxxxxxxxxxxx
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