From owner-freebsd-stable@FreeBSD.ORG Thu Nov 25 20:28:38 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 04746106566C; Thu, 25 Nov 2010 20:28:38 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 5D0F38FC19; Thu, 25 Nov 2010 20:28:36 +0000 (UTC) Received: by fxm16 with SMTP id 16so181586fxm.13 for ; Thu, 25 Nov 2010 12:28:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=F3mKmPPA/oMclj1o5hdnnsOHmI0wbNLgMFMKEiloAkI=; b=rnBYQobyqWabYJ9WFCCChrXrKGxImcBJBG0BhHSoJM5hJNG1OjP+2KZt7dIOoodYK/ e1Cd94aQsqgKxAaNrLd+mcVM2XBfrbGQamNmrLztcbnX0SjAlbUqEz7GgctGBoRcpbnk +Rb4Uirjuyo5UB19rI2vYAZF96ZddwTTLG1MM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=rH0iUzOaYvY7SKVf8Sg4FEn702qNuEDTa1zQoiHbN85h0rrQUMRCKCsgFXCJS/RY7e v+YVY6Y2nvWjsCAQhZ/dNTK+kuboAwn22AjCfDyS3wOLAvq9vxsy7kceSn9SzkcaR0uu /F7JLTKf/YednUouEq9cKsx8UBjXmCPgaKLXM= MIME-Version: 1.0 Received: by 10.223.53.68 with SMTP id l4mr1243664fag.44.1290716915648; Thu, 25 Nov 2010 12:28:35 -0800 (PST) Received: by 10.223.121.138 with HTTP; Thu, 25 Nov 2010 12:28:35 -0800 (PST) In-Reply-To: <20101125200813.GA56066@icarus.home.lan> References: <4CEE88D9.4070200@DataIX.net> <20101125200813.GA56066@icarus.home.lan> Date: Thu, 25 Nov 2010 14:28:35 -0600 Message-ID: From: Adam Vande More To: Jeremy Chadwick Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-stable@freebsd.org, Andriy Gapon Subject: Re: top io mode X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Nov 2010 20:28:38 -0000 On Thu, Nov 25, 2010 at 2:08 PM, Jeremy Chadwick wrote: > > Well the top bug didn't seem to resolve my actual issue and yes it it a > > complete ZFS system. Problem is that the HD activity indicator light is > > constantly flickering even though should be minimal activity. top still > > shows no activity around the blinks, and there's no swapping happening > > although gstat does seem to roughly match the blinks. I can't tell what > > your patch does, would it enable me to see what's touching the disk? > > Please try using gstat(8) instead. > Like I said gstat shows activity, but I have no way find what process is causing the activity unless there is some hidden gstat option I'm unaware of. to be more clear, if I have top -m io in one terminal, I see no movement in the READ/WRITE columns. while polling gstat output I captured an IO "spike" http://pastebin.com/f84nuzxt the percent busy is at 0.00 for every entry with the exception of these spikes. -- Adam Vande More