linux-kernel - Re: [RFC] Add a new generic system call which has better performance, to get /proc data, than existing mechanisms

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Date:   Sat, 19 Nov 2022 09:49:24 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Anjali Kulkarni <anjali.k.kulkarni@...cle.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [RFC] Add a new generic system call which has better
 performance, to get /proc data, than existing mechanisms

On Fri, Nov 18, 2022 at 11:12:02AM -0800, Anjali Kulkarni wrote:
> Hi Greg,
> I was looking up your readfile() system call and this seems something
> useful to us - is this something expected to go into mainline any time
> soon?

Can you test it to see if it actually helps your workload?  All of the
ones I played with were just very minor improvements or lots in the
noise.

Also, look into using io_uring as that can probably do the same thing,
right?

thanks,

greg k-h