From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 21460 invoked from network); 18 Nov 2021 23:36:33 -0000 Received: from 4ess.inri.net (216.126.196.42) by inbox.vuxu.org with ESMTPUTF8; 18 Nov 2021 23:36:33 -0000 Received: from mail-pf1-f177.google.com ([209.85.210.177]) by 4ess; Thu Nov 18 18:28:16 -0500 2021 Received: by mail-pf1-f177.google.com with SMTP id x5so7660503pfr.0 for <9front@9front.org>; Thu, 18 Nov 2021 15:28:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-transfer-encoding; bh=c1sCnwtR4oPojVRIIPKYFx34NGMsjPb1iKaf4Hk7rFw=; b=MfKsr61Dhg+z6gQMCy34KtUvSUMFUAT6xNxMo7EPetPyORAN8yRjL2CsfB3Hk2E09o tjvyJ7aXAGaRQaMKKxfT3p57FGSiuM/ySyFbeOZDNr8VQB1SPBXs1i9stwz5A4RlWFk+ r77RnEtId0nATzufLhv+KTPi5Vf3Te5Ad5p2rRey7q+iP2wbkaLzDFxN7yhyhUQPot51 IhBYnT33ZPcKk5PbKhPo41iNeLQIx7HMCQvYXeGvDiuzFf9+AwYGz0YPQ3R+0sIeKXXW yq1M8f3LMorRsD/TwpH7PqxPA3yrElq59SwQf4qbqGHhUj4g3kgQ8gNYLyuHlKQVJU5H fyrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-transfer-encoding; bh=c1sCnwtR4oPojVRIIPKYFx34NGMsjPb1iKaf4Hk7rFw=; b=CYe/BRtOHlRq2hSZ0r6f8Ww7PzH2dE/xpyzwEb2DUgYX/0S+2ASO7Qp0rmP3GmN3rj qIqxjbSBCzPZxqO4g6p+69KSfsbVoh8UdbfqDd+ukrAW8gpVNNmaSsPmgg7/FaTVnFkD 5+jdMvDRjcuww/AAxyXyER/8B0hGXTOQv8PKneNbGSWw6uKpvZCZrvQYpwL37rFB8OtG 9sGKHibR/1HncpDV8yb4ZjvDMdwmhiYUDwP+Kv0JqSpfCIpABb3EhL/4btgvLf2bfjfK VPFg5bdbJEpOdjd/mSHUdua0dMeK6cHaDoBQJT7dZxeJpq3k6ZD6lKtzhLN4qaxdOk4i VBmw== X-Gm-Message-State: AOAM532nfpcM/GAyofi7gDauKpzlMApjGf+Eb+7nDOrJikujGnEZWqEX ss98J0QCxfjmeEW09D3Vogiy3JPjsaB1nEB2yIPGS+BL X-Google-Smtp-Source: ABdhPJzPE56iQVFbUiaxeR7MCFHCrcWtdYoED3yMr2+kJhap/F1XVSA+vRipwcqiAvW8QFIiP9EZ9kr8EYYwwZdyqVc= X-Received: by 2002:a05:6122:2090:: with SMTP id i16mr110948875vkd.18.1637277690708; Thu, 18 Nov 2021 15:21:30 -0800 (PST) MIME-Version: 1.0 Received: by 2002:a59:ab8c:0:b0:248:ba1c:c015 with HTTP; Thu, 18 Nov 2021 15:21:30 -0800 (PST) In-Reply-To: <4A0B108C-C61D-48F4-9550-6394823096F1@quintile.net> References: <4A0B108C-C61D-48F4-9550-6394823096F1@quintile.net> From: hiro <23hiro@gmail.com> Date: Fri, 19 Nov 2021 00:21:30 +0100 Message-ID: To: 9front@9front.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable List-ID: <9front.9front.org> List-Help: X-Glyph: ➈ X-Bullshit: virtual hardware content-driven configuration-aware layer Subject: Re: [9front] cfs, aan and network recommendations Reply-To: 9front@9front.org Precedence: bulk it is only done with filesystems, with other synthetic files we cannot seek= . http://git.9front.org/plan9front/plan9front/6617c63a374f7211b41252d3957e8a8= 9061b8a49/commit.html later it got changed to only apply to disk-filesystems, can't find that commit right now On 11/18/21, Steve Simon wrote: > > i am interested, where is the readahead? in cwfs, in the 9p kernel? in > page(1)? > > -Steve > > > On 18 Nov 2021, at 10:12 am, hiro <23hiro@gmail.com> wrote: > > =EF=BB=BF >> >> However, when reading static files like pdfs and images (big filesize to >> protocol ratio) it's really a benefit. >> > > i doubt that, we have readahead, so unless you're bandwidth limited > the 9p latency shouldn't matter. that is when the mountpoint that > supplies the file is cwfs and it didn't get re-exported by something > else... >