From owner-freebsd-dtrace@freebsd.org Mon Dec 10 06:05:23 2018 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0B2151312DFC for ; Mon, 10 Dec 2018 06:05:23 +0000 (UTC) (envelope-from eugene@zhegan.in) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 58B888FB08 for ; Mon, 10 Dec 2018 06:05:22 +0000 (UTC) (envelope-from eugene@zhegan.in) Received: by mailman.ysv.freebsd.org (Postfix) id 127C51312DFB; Mon, 10 Dec 2018 06:05:22 +0000 (UTC) Delivered-To: dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 00C5E1312DFA for ; Mon, 10 Dec 2018 06:05:22 +0000 (UTC) (envelope-from eugene@zhegan.in) Received: from elf.hq.norma.perm.ru (mail.norma.perm.ru [IPv6:2a00:7540:1::5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.norma.perm.ru", Issuer "Vivat-Trade UNIX Root CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 7BC428FB07 for ; Mon, 10 Dec 2018 06:05:14 +0000 (UTC) (envelope-from eugene@zhegan.in) Received: from bsdrookie.norma.com. (asterisk.enaza.ru [91.237.76.254] (may be forged)) by elf.hq.norma.perm.ru (8.15.2/8.15.2) with ESMTPS id wBA659br021542 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 10 Dec 2018 11:05:10 +0500 (+05) (envelope-from eugene@zhegan.in) Subject: Re: iotop for iSCSI or zfs datasets To: dtrace@freebsd.org References: <67bc8f0a-8702-c6ee-9d37-3a5064709126@zhegan.in> From: "Eugene M. Zheganin" Message-ID: <5b23c43b-a00f-0703-60e1-00920d5dbe79@zhegan.in> Date: Mon, 10 Dec 2018 11:05:09 +0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Rspamd-Scan-Time: 0.46 X-Rspamd-Queue-Id: 58B888FB08 X-Spamd-Result: default: False [-6.67 / 15.00]; ARC_NA(0.00)[]; R_SPF_FAIL(0.00)[-all]; RCVD_COUNT_FIVE(0.00)[5]; FORGED_RECIPIENTS_FORWARDING(0.00)[]; FROM_HAS_DN(0.00)[]; FORWARDED(0.00)[dtrace@mailman.ysv.freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[zhegan.in]; SPF_FAIL_FORWARDING(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; MX_GOOD(-0.01)[cached: mail-backup.zhegan.in]; RCVD_IN_DNSWL_MED(-0.20)[5.0.0.0.0.5.0.0.0.0.0.0.0.0.0.0.a.6.0.2.4.5.2.2.0.0.9.1.1.0.0.2.list.dnswl.org : 127.0.9.2]; NEURAL_HAM_SHORT(-0.93)[-0.934,0]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; IP_SCORE(-3.53)[ip: (-9.87), ipnet: 2001:1900:2254::/48(-4.49), asn: 10310(-3.19), country: US(-0.09)]; ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US]; FORGED_RECIPIENTS(0.00)[dtrace@freebsd.org,freebsd-dtrace@freebsd.org]; MID_RHS_MATCH_FROM(0.00)[] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Dec 2018 06:05:23 -0000 Hello, On 07.12.2018 20:25, Alan Somers wrote: > >> I also can see the iotop in the context of network data transferred >> using trafshow, but this doesn't scale well to iops, and I would see >> reads/writes per second in terms that block devices use. >> >> >> Thanks. >> >> Eugene. > What's wrong with gstat? Use "gstat -a" to suppress idle devices. > -Alan Everything is wrong with gstat in this case. First of all, this is what's wrong - https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227465 , and gstat required zvols to be volmode=geom to use it this way. Second, volmode=dev is supposed to be more performing. Finally, I find hilarious that first answer in the dtrace@ was "don't use dtrace". Eugene. From owner-freebsd-dtrace@freebsd.org Tue Dec 11 15:42:10 2018 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4762B1335739 for ; Tue, 11 Dec 2018 15:42:10 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id B5C9C73B7E for ; Tue, 11 Dec 2018 15:42:09 +0000 (UTC) (envelope-from asomers@gmail.com) Received: by mailman.ysv.freebsd.org (Postfix) id 7909A1335738; Tue, 11 Dec 2018 15:42:09 +0000 (UTC) Delivered-To: dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3C6C01335737 for ; Tue, 11 Dec 2018 15:42:09 +0000 (UTC) (envelope-from asomers@gmail.com) Received: from mail-lj1-f173.google.com (mail-lj1-f173.google.com [209.85.208.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2FF4673B76 for ; Tue, 11 Dec 2018 15:42:08 +0000 (UTC) (envelope-from asomers@gmail.com) Received: by mail-lj1-f173.google.com with SMTP id n18-v6so13362932lji.7 for ; Tue, 11 Dec 2018 07:42:08 -0800 (PST) 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=qNx/BeBlQzNR0eoOdS6B38mncwtG+VWxImO20w4TCFE=; b=QQA1H2CcEsJik66tNcbSHNloaM1NFF59SYzxQ+GRUA1juyteBPZ2lxG0jdr1Yf48Eb /5e5JzL2rZ2CwgUmKMCrfUd6giU9O/maRublreqF2uHoF0hCSUHeuBn89d7y7XyhiRUw xnXJmsoNzjU/DqP1Te5B080w2tXW/ZvoinN2SX4tSViCCzdJ+BRwQbYw5UQpHxCgd8MB rmK9Gc8F5auyXjfjUWyy2Nx4y9aR1ljiyOijI2Hp/DuWx+J3Gdoe24cRtnBkly0Sz/zu 79gM9FsRTl6VICEIUe/wU4P6YurmmQjS3Uy7uP6OEr37dBVFGAMU5CEC58qijE8vXa0g fxCg== X-Gm-Message-State: AA+aEWbZ7EQ2U7E41X+LwmjUjhBOMbUNmwkCk9907xI4q/IGCQZQxYF1 bpz+qi8Hm0U2VvLJs+fhX5ckvmhk/lnFPzTj8KWk4otU X-Google-Smtp-Source: AFSGD/U7Bs804RCt/unbIGodLZQK3sDQewOOKVUc3G06ysGFc51g0S4Fq8BFkx/Nh+yJmDs7PcqCWP3Bwf16M+lSyCI= X-Received: by 2002:a2e:b00a:: with SMTP id y10-v6mr9686211ljk.109.1544542477858; Tue, 11 Dec 2018 07:34:37 -0800 (PST) MIME-Version: 1.0 References: <67bc8f0a-8702-c6ee-9d37-3a5064709126@zhegan.in> <5b23c43b-a00f-0703-60e1-00920d5dbe79@zhegan.in> In-Reply-To: <5b23c43b-a00f-0703-60e1-00920d5dbe79@zhegan.in> From: Alan Somers Date: Tue, 11 Dec 2018 08:34:26 -0700 Message-ID: Subject: Re: iotop for iSCSI or zfs datasets To: "Eugene M. Zheganin" Cc: dtrace@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: B5C9C73B7E X-Spamd-Result: default: False [-6.70 / 15.00]; ARC_NA(0.00)[]; FORGED_RECIPIENTS_FORWARDING(0.00)[]; RCVD_COUNT_FIVE(0.00)[5]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; FORWARDED(0.00)[dtrace@mailman.ysv.freebsd.org]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.org]; R_SPF_SOFTFAIL(0.00)[~all]; NEURAL_HAM_SHORT(-0.97)[-0.974,0]; SPF_FAIL_FORWARDING(0.00)[]; FORGED_SENDER_FORWARDING(0.00)[]; RCVD_IN_DNSWL_MED(-0.20)[5.0.0.0.0.5.0.0.0.0.0.0.0.0.0.0.a.6.0.2.4.5.2.2.0.0.9.1.1.0.0.2.list.dnswl.org : 127.0.9.2]; RCPT_COUNT_TWO(0.00)[2]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; IP_SCORE(-3.51)[ip: (-9.87), ipnet: 2001:1900:2254::/48(-4.46), asn: 10310(-3.15), country: US(-0.09)]; FORGED_SENDER(0.00)[asomers@freebsd.org,asomers@gmail.com]; RCVD_NO_TLS_LAST(0.10)[]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:10310, ipnet:2001:1900:2254::/48, country:US]; FROM_NEQ_ENVFROM(0.00)[asomers@freebsd.org,asomers@gmail.com]; FORGED_RECIPIENTS(0.00)[eugene@zhegan.in ..,freebsd-dtrace@freebsd.org] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Dec 2018 15:42:10 -0000 On Sun, Dec 9, 2018 at 11:05 PM Eugene M. Zheganin wrote: > > Hello, > > On 07.12.2018 20:25, Alan Somers wrote: > > > >> I also can see the iotop in the context of network data transferred > >> using trafshow, but this doesn't scale well to iops, and I would see > >> reads/writes per second in terms that block devices use. > >> > >> > >> Thanks. > >> > >> Eugene. > > What's wrong with gstat? Use "gstat -a" to suppress idle devices. > > -Alan > > Everything is wrong with gstat in this case. > > First of all, this is what's wrong - > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227465 , and gstat > required zvols to be volmode=geom to use it this way. > > Second, volmode=dev is supposed to be more performing. > > Finally, I find hilarious that first answer in the dtrace@ was "don't > use dtrace". > > Eugene. It's too bad that you can't use volmode=geom. gstat is really ideal for this case. But since you asked nicely, here's a dtrace script to get you started. fbt:zfs:zvol_strategy:entry /args[0]->bio_cmd == 1/ { zv = (zvol_state_t*)(args[0]->bio_to->private); @reads[stringof(zv->zv_name), "read"] = count(); } fbt:zfs:zvol_strategy:entry /args[0]->bio_cmd == 2/ { zv = (zvol_state_t*)(args[0]->bio_to->private); @writes[stringof(zv->zv_name), "write"] = count(); } -Alan