From owner-freebsd-scsi Tue Oct 31 20:57:32 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from misery.sdf.com (misery.sdf.com [204.244.213.49]) by hub.freebsd.org (Postfix) with ESMTP id 2616537B479 for ; Tue, 31 Oct 2000 20:57:30 -0800 (PST) Received: from tom (helo=localhost) by misery.sdf.com with local-esmtp (Exim 2.12 #1) id 13qpZl-0000P0-00; Tue, 31 Oct 2000 20:32:37 -0800 Date: Tue, 31 Oct 2000 20:32:36 -0800 (PST) From: Tom Samplonius To: The Hermit Hacker Cc: freebsd-scsi@freebsd.org Subject: Re: iostat: tps for SCSI drives ... In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Wed, 1 Nov 2000, The Hermit Hacker wrote: > On Tue, 31 Oct 2000, Tom Samplonius wrote: > > > > > On Tue, 31 Oct 2000, The Hermit Hacker wrote: > > > > > Okay, how do I read this: > > > > > > pgsql# camcontrol tags da0 -v > > > (pass0:ahc0:0:0:0): dev_openings 41 > > > (pass0:ahc0:0:0:0): dev_active 0 > > > (pass0:ahc0:0:0:0): devq_openings 41 > > > (pass0:ahc0:0:0:0): devq_queued 0 > > > (pass0:ahc0:0:0:0): held 0 > > > (pass0:ahc0:0:0:0): mintags 2 > > > (pass0:ahc0:0:0:0): maxtags 255 > > > > I wonder why dev_openings is lower than maxtags? > > anything I can look at/check to find out? Don't know... do you get kernel messages that the kernel is reducing openings? Lots of stuff in the archives about how the kernel can reduce openings if a drive reports errors. If openings is getting lower, that must be happening. See what it is like after a fresh boot. Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message