Date: Tue, 12 Dec 1995 21:06:39 +1100 From: Bruce Evans <bde@zeta.org.au> To: hackers@FreeBSD.org, marc@bowtie.nl Subject: Re: Silent Reboot of 2.1 Message-ID: <199512121006.VAA26332@godzilla.zeta.org.au>
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>I just experienced the first silent reboot of Fbsd 2.1. I was working >with GIMP, and to use it more effectively I changed the shared >memory size to 16MB: >shminfo: > shmmax: 16777216 (max shared memory segment size) > shmmin: 1 (min shared memory segment size) > shmmni: 32 (max number of shared memory identifiers) > shmseg: 8 (max shared memory segments per process) > shmall: 4096 (max amount of shared memory in pages) >I accomplished this by editing /sys/i386/include/vmparam.h and >changing SHMMAXPGS from 1024 to 4096. >This is the only thing I can think of that might have caused this. >Could it? Yes, shared memory pages are allocated in a submap of the kernel map, so if too many are allocated then malloc() may fail and bad things may happen. Bruce
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