Date: Tue, 17 Feb 2009 17:05:12 -0500 From: Mike Tancsa <mike@sentex.net> To: Luigi Rizzo <rizzo@iet.unipi.it>, Scott Long <scottl@samsco.org> Cc: freebsd-current@freebsd.org, freebsd-stable@freebsd.org Subject: Re: HEADS UP: Major CAM performance regression Message-ID: <200902172205.n1HM5IUf022092@pyroxene.sentex.ca> In-Reply-To: <20090217075742.GA69308@onelab2.iet.unipi.it> References: <499551B9.7050805@samsco.org> <gn3ssi$j1r$1@ger.gmane.org> <4995DFE5.1020205@samsco.org> <9bbcef730902131421r53efa13dq371658888747f387@mail.gmail.com> <4996D635.3000802@samsco.org> <20090217075742.GA69308@onelab2.iet.unipi.it>
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At 02:57 AM 2/17/2009, Luigi Rizzo wrote:
>On Sat, Feb 14, 2009 at 07:33:25AM -0700, Scott Long wrote:
>...
> > >I'll try your suggestion if you have one.
> >
> > I don't have a magic universal testing suite in my back pocket, sorry.
> > You need to look at your expected workload and develop tests to simulate
> > it. When I do testing during driver development, I try a lot of
> > different parallel, sequential, large i/o, and small i/o combinations.
>
>i just committed a port sysutils/fio that perhaps can help testing
>IO performance with various patterns.
Hi,
Do you have any suggestions as to what tests to run with fio ?
Am I right in assuming that the Areca is hit by this bug ?
0[releng7]# camcontrol tags da0
(pass0:arcmsr0:0:0:0): device openings: 1
0[releng7]#
---Mike
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