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Date:      Sun, 13 Jun 1999 22:02:13 -0300 (ADT)
From:      The Hermit Hacker <scrappy@hub.org>
To:        Matthew Dillon <dillon@apollo.backplane.com>
Cc:        "David E. Cross" <crossd@cs.rpi.edu>, freebsd-current@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG
Subject:   Re: MMAP() in STABLE/CURRENT ... 
Message-ID:  <Pine.BSF.4.05.9906132201400.49155-100000@thelab.hub.org>
In-Reply-To: <199906130459.VAA65612@apollo.backplane.com>

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On Sat, 12 Jun 1999, Matthew Dillon wrote:

> :Anyway, I have a simple program that mmap()s a 1Gig file into memory, 
> :madvise()s it that it will be doing random access.  If I quit and restart
> :this program a couple of times (yes, it close()s and munmap()s the segment),
> :my system will hard lock.  By dropping into DDB once I found that it was
> :stuck in 'vm_somethingorother_choosepage'.  Does this ring any bells?  Should
> :I try to stop my system again?
> :
> :--
> :David Cross                               | email: crossd@cs.rpi.edu 
> 
>     David, can you email this program to me please?
> 
>     Also, which FreeBSD release does this occur on?
> 
>     I've got about 6 mmap-related bugs on my plate at the moment.  3 of them
>     have been identified ( that is, I know why they deadlock the machine ),
>     but none have been fixed yet.

Matt, I'll volunteer myself as a tester for this code under 3.2-STABLE,
when you have it ready...

Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
Systems Administrator @ hub.org 
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org 



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