From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8E377C433FE for ; Sat, 19 Nov 2022 08:49:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233179AbiKSItl (ORCPT ); Sat, 19 Nov 2022 03:49:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233423AbiKSIte (ORCPT ); Sat, 19 Nov 2022 03:49:34 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB4736B9ED for ; Sat, 19 Nov 2022 00:49:27 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4EBB56009E for ; Sat, 19 Nov 2022 08:49:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5AEB3C433D6; Sat, 19 Nov 2022 08:49:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1668847766; bh=UVCfR3anyQssNbga8oJ+NA2adZ5isywkxGYwWPbPgQQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VAhl2tmZTRkke5JgfIumxAtjUqC4brzImyR2zWapBhnFUD+AfsLFdwJezVqzgywH0 jVZaijSnnFy2DviiqoXsGm5WIUb/2HyglBB9gwXz8lY7v1sUlsq94mRzmEoQ8ORDyN CB4H70m8XpOMk8oYxu1yFqECTlSVYU56bLX2LYz0= Date: Sat, 19 Nov 2022 09:49:24 +0100 From: Greg KH To: Anjali Kulkarni Cc: linux-kernel@vger.kernel.org Subject: Re: [RFC] Add a new generic system call which has better performance, to get /proc data, than existing mechanisms Message-ID: References: <20221118191202.2357801-1-anjali.k.kulkarni@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221118191202.2357801-1-anjali.k.kulkarni@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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