Date: Wed, 28 May 1997 14:17:20 -0400 (EDT) From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: rodigue@ibm.net, ponds!freefall.cdrom.com!freebsd-bugs Subject: Re: kern/3674: NFS in 2.2 RELEASE hangs. Message-ID: <199705281817.OAA06044@lakes.water.net>
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> > The following reply was made to PR kern/3674; it has been noted by GNATS. > > From: Jose A Rodriguez <rodigue@ibm.net> > To: freebsd-gnats-submit@freebsd.org, dfr@nlsystems.com > Cc: Subject: Re: kern/3674: NFS in 2.2 RELEASE hangs. > Date: Tue, 27 May 1997 22:04:16 -0400 > > When I read that the problem might be caused by a fast server > overwhelming a slower client, I did the following to prevent IP > fragmentation: > > mount -t nfs -o -r=1024 remote_machine:/remote_directory /mnt > > Then I did > > cp /mnt/remote_file local_file > > and after a few seconds I started to get kernel panics ! (Page faults > while in kernel mode, LRU queue inconsistent, and other nasty messages). > > By the way, the client's network card is AMD PCNET (pci & isa), > at least this is what Win95 reports. > If I'm not mistaken - 'cp' using mmap to actually copy the file. You could have an mmap or other VM problem here. I recall similar problems in the 1.1.5 time frame. At that time, it was decided to not use mmap in 'cp'... - Dave Rivers -
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