From owner-freebsd-hackers@freebsd.org Wed Nov 20 04:36:45 2019 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C8D091C7C0B for ; Wed, 20 Nov 2019 04:36:45 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47Hqf473Cfz4K2N for ; Wed, 20 Nov 2019 04:36:44 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: by mail-io1-xd33.google.com with SMTP id 1so26129762iou.4 for ; Tue, 19 Nov 2019 20:36:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=+6OZm7Oz2nUaKqWuFFjv2ZsWp59XlRVr9usgysExpyQ=; b=bxPeQLMZzAIix+PVu3CJxWlip9YV0ARlkzuKyKuSRbO62N9Rcv5x+9YukgNIYC91pk EmbUX9dK7GgQDtZ7nKrGRWRG5Qfc3OknU/ASX4S2BLjghBU7j3u178Y5yYLjDFH2Gp87 EcAgBZsL00827IkFOLK//jZR17ElyJFyG5y9vF3e25Ripwn4g/dHWgehrLo4k9oYDVnE 2rtRTvJOCuSxpWYID/d17BaoO00jgGMtoH1L2hGpKciLapYkkZYRH2JE71H6Gb8oUqg2 bz6IwLtKDJq1VD6wat03ovRA0vsSt4Mg/NohOhfYSkXXKuH92SS8SCP7+fdO54jrvxF3 MIiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=+6OZm7Oz2nUaKqWuFFjv2ZsWp59XlRVr9usgysExpyQ=; b=ejWu91x74XFWZGzoE1mrc8q6asaZTWdid4PTW6KgM5qHg0/amlzNt86i/An0aPL3GV smbRPuVhj557yEvpt4T5Yf/tnGAL/IVWrDd1JI2tRTq2EMar5ZEpSALh4tDNPu0hnErk TXiZIP6B8juDrinx9aR55xVMD9mrE8rp26m+5V4oXb00iq+qjvpXJbYrbG2sQkMyJivj Wu3rR9OpMNrPHAYWrc4G7RuKfdJjI3/wKsVCPe3Ftyr4xje/5Ke+oVACvB/JAZlAfg0G IhIDeYDS4Geg1/KDiVjmYXFHQgyYMpisHVlPN+6dxjy/bcxrxGc+MXN0IV5jxopHfsDb ayFw== X-Gm-Message-State: APjAAAWzEuqt3bWyUXlekPivGzG1lMdlEgpDtoJxfPW7NNzdemhmw1JR xdveDfQzKqcYE/x9bxFp4cjQ3JhKTZ4kruvWtjUS43FJ X-Google-Smtp-Source: APXvYqx0KGW2bytNk7JMLLNHcZJteFYD3HRnQCxql8dVKRk8q0ovID2tBBT+uUMvS9IuUM2/tZEal0kwLRjrwUZrWzI= X-Received: by 2002:a05:6638:34b:: with SMTP id x11mr1393153jap.128.1574224603750; Tue, 19 Nov 2019 20:36:43 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Adam Date: Tue, 19 Nov 2019 22:36:34 -0600 Message-ID: Subject: Re: geom_ssdcache To: Wojciech Puchar Cc: FreeBSD Hackers X-Rspamd-Queue-Id: 47Hqf473Cfz4K2N X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=bxPeQLMZ; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of amvandemore@gmail.com designates 2607:f8b0:4864:20::d33 as permitted sender) smtp.mailfrom=amvandemore@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[3.3.d.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; IP_SCORE(0.00)[ip: (-5.06), ipnet: 2607:f8b0::/32(-2.30), asn: 15169(-1.97), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Nov 2019 04:36:45 -0000 On Tue, Nov 19, 2019 at 6:06 AM Wojciech Puchar wrote: > > But my question is really on UFS. I would like to know in geom layer if > read/write operation is inode/directory/superblock write or regular data > write - so i would give the first time higher priority. Regular data would > not be cached at all, or only when read size will be less than defined > value. > > Isn't this what geom_journal already does? Not sure, I don't use it but it has some caching in too. -- Adam