Date: Sat, 12 Jun 1999 21:59:15 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: "David E. Cross" <crossd@cs.rpi.edu> Cc: The Hermit Hacker <scrappy@hub.org>, freebsd-current@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG, crossd@cs.rpi.edu Subject: Re: MMAP() in STABLE/CURRENT ... Message-ID: <199906130459.VAA65612@apollo.backplane.com> References: <199906091754.NAA34746@cs.rpi.edu>
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: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
Matthew Dillon
<dillon@backplane.com>
:Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd
:Rensselaer Polytechnic Institute, | Ph: 518.276.2860
:Department of Computer Science | Fax: 518.276.4033
:I speak only for myself. | WinNT:Linux::Linux:FreeBSD
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