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From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
To: Hans Reiser <reiser@namesys.com>
Cc: Steve French <smfrench@austin.rr.com>,
	cliff white <cliffw@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: cifs large write performance improvements to Samba
Date: Thu, 16 Dec 2004 14:30:44 -0200	[thread overview]
Message-ID: <20041216163044.GG9986@logos.cnet> (raw)
In-Reply-To: <41C1DABF.2050004@namesys.com>

On Thu, Dec 16, 2004 at 10:58:07AM -0800, Hans Reiser wrote:
> Marcelo Tosatti wrote:
> 
> >
> >>I have not seen anyone 
> >>doing that on Linux in an automated fashion (e.g running iozone 
> >>automated every time a new 2.6.x.rc on a half a dozen of the fs - simply 
> >>to verify that things had not gotten drastically worse on a particular 
> >>fs due to a bug or sideffect of a global VFS change).
> >>   
> >>
> >
> >Yes, we definately need that.
> >
> > 
> >
> Andrew Morton is saying that iozone does things real apps don't do, that 
> is, it dirties mmap'd pages enough to swamp the machine.
> 
> Do you guys agree or disagree with that?
> 
> Reiser4 needs iozone optimization work which we haven't bothered with yet.

I'm not really familiar with iozone's behaviour, sorry. 

Steve, Andrew?

PS: Yep, another important part (to me at least) of all this automated performance 
testing effort is a detailed understanding of the tests being performed.

  reply	other threads:[~2004-12-16 19:26 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-13 16:56 cifs large write performance improvements to Samba Steve French
2004-12-13 17:20 ` cliff white
2004-12-13 18:34   ` Steve French
2004-12-13 18:43     ` Steve French
2004-12-16 12:11       ` Marcelo Tosatti
2004-12-16 16:39         ` automated filesystem testing for multiple Linux fs Steve French
2004-12-17  0:27           ` Michael Clark
2004-12-17  0:51             ` Steve French
2004-12-17  2:23               ` Michael Clark
2004-12-16 18:58         ` cifs large write performance improvements to Samba Hans Reiser
2004-12-16 16:30           ` Marcelo Tosatti [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-12-13  5:45 Steve French
2004-12-13 14:38 ` bert hubert
     [not found]   ` <41BDC911.9010600@austin.rr.com>
2004-12-22 14:56     ` bert hubert

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