Re: [RFC PATCH 5/5] SUNRPC: Reduce the priority of the xprtiod queue

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On Fri, May 3, 2019 at 7:24 AM Trond Myklebust <trondmy@xxxxxxxxx> wrote:
>
> Allow more time for softirqd
>
> Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
> ---
>  net/sunrpc/sched.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
> index c7e81336620c..6b37c9a4b48f 100644
> --- a/net/sunrpc/sched.c
> +++ b/net/sunrpc/sched.c
> @@ -1253,7 +1253,7 @@ static int rpciod_start(void)
>                 goto out_failed;
>         rpciod_workqueue = wq;
>         /* Note: highpri because network receive is latency sensitive */
> -       wq = alloc_workqueue("xprtiod", WQ_UNBOUND|WQ_MEM_RECLAIM|WQ_HIGHPRI, 0);

I thought we needed UNBOUND otherwise there was performance
degradation for read IO.

> +       wq = alloc_workqueue("xprtiod", WQ_MEM_RECLAIM | WQ_UNBOUND, 0);
>         if (!wq)
>                 goto free_rpciod;
>         xprtiod_workqueue = wq;
> --
> 2.21.0
>



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