From nobody Sun Oct 16 22:07:00 2022 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4MrDkG57qsz4gC2l for ; Sun, 16 Oct 2022 22:07:02 +0000 (UTC) (envelope-from mjguzik@gmail.com) Received: from mail-oa1-x2f.google.com (mail-oa1-x2f.google.com [IPv6:2001:4860:4864:20::2f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4MrDkG0g86z3WrK for ; Sun, 16 Oct 2022 22:07:02 +0000 (UTC) (envelope-from mjguzik@gmail.com) Received: by mail-oa1-x2f.google.com with SMTP id 586e51a60fabf-132af5e5543so11554666fac.8 for ; Sun, 16 Oct 2022 15:07:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:references:in-reply-to :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=/7jVyhOoKphFDQ/YwB459pNuoaNCKM4mDjRmNIsov1s=; b=YZ76ueYO2mtBBhXjLUocG9FWYx90lQXqENxtrFOTjKTToL7D3rWcXtMJbJdd6TCipY zlPn1734fUE9WMFKauGJkEUFJpWJ5fclwmyS5VHyBl9lw/0cIY1nSt7MUPf+pfKcMv/p 7EYyPFuc6l+8kpkYsTYlH5YvTfIDjYLUzlQzLCAP9afO/t5VvZKnSRHHa4VE/gO2hIqm FQGwqYKV0qUnHNOz/n+YqkgVsgKsNZTT9UNcpd+E9IOqqdIjvnUcvQflrGAO0AzWRQF6 +0lIxT3ZoEHIVYJ+c5Su9TBpfEUH0o981KOD2qPi6MGYo3o8+PsTUNKoRKwEoXAb+pw1 Aedw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:references:in-reply-to :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=/7jVyhOoKphFDQ/YwB459pNuoaNCKM4mDjRmNIsov1s=; b=5Dj7e8kS/x48TtmJc58bvgWIgpdrTuUeYB4sSRJ3WnaFHUM47u2EiDQ25Gm1z+MsFy i5ca+6LwB2bV6M3+9iyo+2QZaJayKXENXa+J4QGKgZWE0Oas4VSwFlsR3TllsJrIr3PU AOp0ESYEhkthEkfAFDllfsIYmVaGKDbkMMgUbed/ekAaI5n2RN5nhsHq3DSYsqCMYg21 x8+wGksZUwTCl4ETrm0uJ7Rs95MICAcxq+drJ9OxVqrmsdsT3YjEo0BLYsBVnljfpR6Q ToI0+8BAKl76sqQShlXbR+pGumDVu87E0raRvDZ4jnKPwtQT5aTlaqkf7qWayev3pP/6 UjEA== X-Gm-Message-State: ACrzQf3k2exzGbLsQZIyBdvg25gJ+P2dvOmf1su0YWlyUyadOPpb33GB PU68t7dtONEvN4PTgD6/4hJWXmocEhKDw4wWTISD4Jwu X-Google-Smtp-Source: AMsMyM6hjg/d71n+xG6eNhI/YGN+OBkDTqC/iDChnJ/Teg1qN98h+6EMJb7bOryx2BGyd5Osm8OrM33mtXLFAipzRlk= X-Received: by 2002:a05:6870:a7a4:b0:136:7c39:979e with SMTP id x36-20020a056870a7a400b001367c39979emr4323301oao.96.1665958021251; Sun, 16 Oct 2022 15:07:01 -0700 (PDT) List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 Received: by 2002:a8a:351:0:b0:478:5e54:a9c8 with HTTP; Sun, 16 Oct 2022 15:07:00 -0700 (PDT) In-Reply-To: <76faacf1-6307-47af-adb6-200486d63137@app.fastmail.com> References: <76faacf1-6307-47af-adb6-200486d63137@app.fastmail.com> From: Mateusz Guzik Date: Mon, 17 Oct 2022 00:07:00 +0200 Message-ID: Subject: Re: zfs with operations like rm -rf takes a very long time recently To: void Cc: freebsd-fs Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4MrDkG0g86z3WrK X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b=YZ76ueYO; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of mjguzik@gmail.com designates 2001:4860:4864:20::2f as permitted sender) smtp.mailfrom=mjguzik@gmail.com X-Spamd-Result: default: False [-3.69 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.69)[-0.691]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2001:4860:4000::/36:c]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; MIME_GOOD(-0.10)[text/plain]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; FROM_HAS_DN(0.00)[]; ASN(0.00)[asn:15169, ipnet:2001:4860:4864::/48, country:US]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; FREEMAIL_FROM(0.00)[gmail.com]; RCVD_IN_DNSWL_NONE(0.00)[2001:4860:4864:20::2f:from]; TO_DN_ALL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; DKIM_TRACE(0.00)[gmail.com:+]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_TO(0.00)[f-m.fm]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org] X-ThisMailContainsUnwantedMimeParts: N On 10/17/22, void wrote: > On Sun, 16 Oct 2022, at 19:55, Mateusz Guzik wrote: > >> Just in case, can you test with this: sysctl >> vfs.zfs.per_txg_dirty_frees_percent=5 >> >> As in, can you repeat the test multiple times, flipping >> vfs.zfs.per_txg_dirty_frees_percent between 5 and 30. > > After setting this and starting the rm -rf, it completed!!! before I had > time to set up the other tests :D > > Maybe this'll solve the problem? > No, it was flipped because the smaller value was causing a performance problem the other way elsewhere. This needs to be investigated. > > -- Mateusz Guzik