From nobody Mon Jan 2 11:00:44 2023 X-Original-To: freebsd-hackers@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 4NltGl62LWz2p6J8 for ; Mon, 2 Jan 2023 11:01:51 +0000 (UTC) (envelope-from Alexander@leidinger.net) Received: from mailgate.Leidinger.net (bastille.leidinger.net [89.238.82.207]) (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 ECDSA (P-256) client-digest SHA256) (Client CN "mailgate.leidinger.net", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4NltGk37qNz41RN for ; Mon, 2 Jan 2023 11:01:50 +0000 (UTC) (envelope-from Alexander@leidinger.net) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=leidinger.net header.s=outgoing-alex header.b=PfrdfxJo; spf=pass (mx1.freebsd.org: domain of Alexander@leidinger.net designates 89.238.82.207 as permitted sender) smtp.mailfrom=Alexander@leidinger.net; dmarc=pass (policy=quarantine) header.from=leidinger.net Received: from outgoing.leidinger.net (p5b165611.dip0.t-ipconnect.de [91.22.86.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-256) server-digest SHA256 client-signature ECDSA (P-256) client-digest SHA256) (Client CN "outgoing.leidinger.net", Issuer "R3" (verified OK)) by mailgate.Leidinger.net (Postfix) with ESMTPSA id C6EB33338C for ; Mon, 2 Jan 2023 12:01:21 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leidinger.net; s=outgoing-alex; t=1672657290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to; bh=ydjhhgQ9UdlVsyi3T+e0vB29JOIFP6hyWGVBSsJQMbg=; b=PfrdfxJoMTQB6jLN6ZlKNCUBgmInVxr5UVRns0knppxINcm0VLuCFQxtOUqDnqR+P25c30 Pe70Chgw7lmNLYsZoYSIffz9ALmjq1Zg4YyB85C/ytvwx5sbJ85713RXF77HWnkECWPb/U oopi752HHvjjG7Yqg0NstBV5XHOxURubz7GS7hNq7wBHp4Wf8XFRwM56IRSq0GFH2BO+Et ePBND0UOegZSGDeQqf7crL/m5TO/WuJaRiHCjui0stATLWY02KxW8+weHmmsYW6tA0X9YA Bo/mU3uQ7nlzeAIutfNn2xnB62Jo5MF8iG9inF7ioQbfy3ssSrNrbVDa3HYrDg== Received: from webmail.leidinger.net (localhost [127.0.0.1]) by outgoing.leidinger.net (Postfix) with ESMTP id 8B62F4A97 for ; Mon, 2 Jan 2023 12:00:45 +0100 (CET) Received: from www (uid 80) (envelope-from Alexander@leidinger.net) id 811e4 by webmail.leidinger.net (DragonFly Mail Agent v0.13+ on webmail.leidinger.net); Mon, 02 Jan 2023 12:00:45 +0100 Date: Mon, 02 Jan 2023 12:00:44 +0100 Message-ID: <20230102120044.Horde.iouHjGhaxepeEKAbm7pBGb4@webmail.leidinger.net> From: Alexander Leidinger To: George Mitchell Cc: FreeBSD Hackers Subject: Re: What is "zio->i"? In-Reply-To: Accept-Language: de,en Content-Type: multipart/signed; boundary="=_qyArmExEM8xHaKs6o2nsGnr"; protocol="application/pgp-signature"; micalg=pgp-sha256 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 X-Spamd-Result: default: False [-5.09 / 15.00]; SIGNED_PGP(-2.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.993]; DMARC_POLICY_ALLOW(-0.50)[leidinger.net,quarantine]; R_SPF_ALLOW(-0.20)[+mx]; R_DKIM_ALLOW(-0.20)[leidinger.net:s=outgoing-alex]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; MID_RHS_MATCH_FROMTLD(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; RCPT_COUNT_TWO(0.00)[2]; TO_DN_ALL(0.00)[]; ASN(0.00)[asn:34240, ipnet:89.238.64.0/18, country:DE]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; DKIM_TRACE(0.00)[leidinger.net:+]; TAGGED_RCPT(0.00)[freebsd]; RCVD_COUNT_THREE(0.00)[4]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_TLS_LAST(0.00)[] X-Rspamd-Queue-Id: 4NltGk37qNz41RN X-Spamd-Bar: ----- X-ThisMailContainsUnwantedMimeParts: N This message is in MIME format and has been PGP signed. --=_qyArmExEM8xHaKs6o2nsGnr Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Quoting George Mitchell (from Sun, 1 Jan 2023=20= =20 12:52:20=20-0500): > FreeBSD 13.1-RELEASE-p5, using SCHED_4BSD. > > What is "top" telling me when a process is in "zio->i" state? Every > so often, either firefox or thunderbird seemingly sits there > contemplating its own navel in that state for up to a minute or two. > It recovers of its own accord, of course, but I wish I knew what it > meant. Just a few months ago, I moved my /usr partition from UFS to > ZFS, saving myself some fsck aggravation (rarely necessary, but very > slow when needed). "top" also reports some pretty big ARC numbers > -- specifically, bigger than free memory, but not big enough to > consume any swap space: > > Mem: 1232M Active, 1577M Inact, 27M Laundry, 2675M Wired, 175M Buf, 317M = Free > ARC: 1823M Total, 283M MFU, 1515M MRU, 16K Anon, 5117K Header, 13M Other > 1712M Compressed, 2135M Uncompressed, 1.25:1 Ratio > Swap: 8192M Total, 8192M Free An incomplete list of wait channels is here:=20=20 https://wiki.freebsd.org/WaitChannels In=20your case it means most probably that it waits for some ZFS IO to fini= sh. Happy new year, Alexander. --=20 http://www.Leidinger.net=20Alexander@Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild@FreeBSD.org : PGP 0x8F31830F9F2772BF --=_qyArmExEM8xHaKs6o2nsGnr Content-Type: application/pgp-signature Content-Description: Digitale PGP-Signatur Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIzBAABCAAdFiEER9UlYXp1PSd08nWXEg2wmwP42IYFAmOyuVwACgkQEg2wmwP4 2IbY4xAAiiy7WI/vdwl505QpJbjVac3Od62Mh7Rc+3XwT6a/dt150fdGqhloA3P8 5LaODEnHaJtTBreKOGNuFSk/3ZctzZNg5cTHhDiMwEzNvP+LNug3bLhEJLqAJ/h1 QFizHZvbuSqGoWiedZmgqiS0wa/kv7P5RyojEnWYD0pppWb7BKOLhBBcE7IOQ/pm anhGLiebW8VZGlXJGW8LxJIfqaEd+c7Ih3UPtTpmq6/Me6nXFlD+C6ovWTZZvd67 yyfw8IRhw/M2LHIxxxTlQAcvQVLZt0rLN51Q/8g9LSRrwWa9l7WGVNFXdgZ7GLJB iY3ss8XM5OCiXWIZhrrbygtl5PN325XZgPDcL2JIlpMTErfMYokvpLHHeC+R9m0b qbpzsKVG5ba/tMiPfLIkf+GZZT2e0413OfMfKjTNqsSHoTq+cxX5ySfGglKRBP2a iaDm6U80gBGLJilcVa2HUxqTsYAuE0ls06En14zbXoQ88kpLS7grQ3Y+q+I9vGgJ trTB5xhYbho/lSPnyegUFtuBEXlC2uKseRttPsoIQUMLSiNUcoisAUBDUxXKeLi4 uPoL7nWlt7SUIkLy1e4b++r0QK3s/XcQNfzbBLXi4eRZ6/Brdz7mKUySijkfpytf MZqxZV7gAj4PfzKyMTdfcT4t0pjKY+j+OEWKKqPdyod6+orVSvo= =xWbP -----END PGP SIGNATURE----- --=_qyArmExEM8xHaKs6o2nsGnr--