From owner-freebsd-hackers  Sun Mar 31 12:51:35 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id MAA26940
          for hackers-outgoing; Sun, 31 Mar 1996 12:51:35 -0800 (PST)
Received: from shell.aros.net (shell.aros.net [205.164.111.19])
          by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id MAA26935
          for <hackers@FreeBSD.ORG>; Sun, 31 Mar 1996 12:51:33 -0800 (PST)
Received: (from angio@localhost) by shell.aros.net (8.7.5/Unknown) id NAA28795; Sun, 31 Mar 1996 13:53:54 -0700 (MST)
From: Dave Andersen <angio@shell.aros.net>
Message-Id: <199603312053.NAA28795@shell.aros.net>
Subject: Re: "active" (INND14unoff4,shared) gets corrupted
To: imb@scgt.oz.au (michael butler)
Date: Sun, 31 Mar 1996 13:53:54 -0700 (MST)
Cc: rashid@rk.ios.com, hackers@FreeBSD.ORG
In-Reply-To: <199603311506.BAA21645@asstdc.scgt.oz.au> from michael butler at "Apr 1, 96 01:06:21 am"
X-Mailer: ELM [version 2.4ME+ PL13 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

Baffling -- I use both sharedactive and MMAP and get perfect performance 
out of both, especially sharedactive.  We're using unoff2 with 
sharedactive, and the memory usage is *heavenly*, and the readers are 
100% reliable.

     -Dave Andersen

Lo and behold, michael butler once said:
> Rashid  Karimov writes:
> 
> > I have INND1.4seunoff4 installed on 3 computers here - 
> > 2 P6-200 and one P-166, all under FreeBSD 2.1-Release.
> > In one case(P-166) I use shared active patch and ccd driver
> > to max the HDs perf.
> 
> Disable MMAP .. it doesn't work in 2.1-R and I have my doubts if it works
> in either -stable or -current. This _will_ corrupt your active file.
> 
> I had no success with the shared-active patch with -stable .. occasionally a
> reader (nnrpd) will just sit there and chew ~100% of the available CPU. The
> same goes for the "robustness" patch for innxmit .. don't use it either. It
> displays very similar symptoms if the network connection is broken in an
> untimely fashion.
> 
> I haven't had the time to check why both of these patches do simialr things
> but I suspect a rapid select call loop :-(
> 
> 	michael
> 


-- 
angio@aros.net                Complete virtual hosting and business-oriented
system administration         Internet services.  (WWW, FTP, email)
http://www.aros.net/          http://www.aros.net/about/virtual/
  "There are only two industries that refer to thier customers as 'users'."