From owner-freebsd-fs@freebsd.org Thu Mar 25 15:50:47 2021 Return-Path: Delivered-To: freebsd-fs@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 2C7175C1FFC for ; Thu, 25 Mar 2021 15:50:47 +0000 (UTC) (envelope-from matt.churchyard@userve.net) Received: from smtp-a.userve.net (smtp-outbound.userve.net [217.196.1.22]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "*.userve.net", Issuer "Sectigo RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F5qM96FlBz3mcD; Thu, 25 Mar 2021 15:50:45 +0000 (UTC) (envelope-from matt.churchyard@userve.net) Received: from owa.usd-group.com (owa.usd-group.com [217.196.1.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp-a.userve.net (Postfix) with ESMTPS id EE2422383AE; Thu, 25 Mar 2021 15:50:42 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=userve.net; s=uk1; t=1616687443; bh=yfBOHLjgPbZ7WS93/oEfcPFu5uSTD6bkcCKI2erEbcc=; h=From:To:CC:Subject:Date:References:In-Reply-To; b=JejJSMYGIrkaPrIBldu3arFsw/sgE7jFIz4TmmAKLdAvL7al0puBnd3fPa97oaIvI xWj5iTlzQAJ7Yq5lrkniUfLZKApTXKOQgSANn9YNO4ki/zv0TQQz2EgR/wX3Zh3a85 gruHECmtHq+O9HAOBQGRnxmnxXbKLKOL4NrenMJ4= Received: from SERVER.ad.usd-group.com (192.168.0.1) by SERVER.ad.usd-group.com (192.168.0.1) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 25 Mar 2021 15:50:42 +0000 Received: from SERVER.ad.usd-group.com ([fe80::b19d:892a:6fc7:1c9]) by SERVER.ad.usd-group.com ([fe80::b19d:892a:6fc7:1c9%12]) with mapi id 15.00.1497.012; Thu, 25 Mar 2021 15:50:42 +0000 From: Matt Churchyard To: Andriy Gapon , Mathieu Chouquet-Stringer CC: "freebsd-fs@freebsd.org" Subject: RE: Scrub incredibly slow with 13.0-RC3 (as well as RC1 & 2) Thread-Topic: Scrub incredibly slow with 13.0-RC3 (as well as RC1 & 2) Thread-Index: AQHXHwShBASzm+41FEaFBtPr0Iszi6qQHmJQgAAGqYCAAJNmAIAAmgKAgAHCrO+AAAe4AIABSsvggABzGoCAAAAwUA== Date: Thu, 25 Mar 2021 15:50:41 +0000 Message-ID: References: <202103221515.12MFFHRK015188@higson.cam.lispworks.com> <202103241230.12OCUqur030001@higson.cam.lispworks.com> <33eb78e2de404a77b271880dbee4c22e@SERVER.ad.usd-group.com> <13825648-7965-8a95-67a2-262cb50c2d71@FreeBSD.org> In-Reply-To: <13825648-7965-8a95-67a2-262cb50c2d71@FreeBSD.org> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [192.168.0.10] Content-Type: text/plain; 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