Date: Mon, 20 Apr 1998 13:10:23 -0500 From: Raul Zighelboim <rzig@verio.net> To: "'dg@root.com'" <dg@root.com>, Andrzej Bialecki <abial@nask.pl> Cc: "'David E. Cross'" <dec@phoenix.its.rpi.edu>, "'hackers@freebsd.org'" <hackers@FreeBSD.ORG> Subject: RE: 1 Gbyte of ram Message-ID: <A03CD00C69B1D01195AB00A024ECEB167F9DCF@kaori.communique.net>
next in thread | raw e-mail | index | archive | help
So, how do I handle: : kmem_malloc: kmem_map too small syncing disks... panic: kmem_malloc: kmem_map too small Automatic reboot in 15 seconds - press a key on the console to abort Rebooting... Thanks. ================================================== Raul Zighelboim rzig@verio.net > -----Original Message----- > From: David Greenman [SMTP:dg@root.com] > Sent: Monday, April 20, 1998 2:31 AM > To: Andrzej Bialecki > Cc: Raul Zighelboim; 'David E. Cross'; 'hackers@freebsd.org' > Subject: Re: 1 Gbyte of ram > > >> A patch is usually only required if you need to support a large > number of > >> TCP connections (and thus needs lots of mbuf clusters/kernel VM). > FreeBSD > >> 2.2.6, -stable, and -current should otherwise work out of the box > with 1GB > >> of RAM. > > > >And what with the "kmem_map too small" type errors? (I'm not getting > them, > >I'm just curious, because I remember this was an issue in 2.2.2 > days...). > > That is cause by the kernel malloc area being too small. The > parameter > that controls that is VM_KMEM_SIZE; the default is 32MB, and on > wcarchive > this is set to 96MB - but that may only be possible if the entire > kernel > virtual address space is increased (which is what the "patch" does > that > you're talking about). All of these values need to be carefully tuned > as a function of the type of load they will be expected to handle. > Someone > needs to write a book on how to tune everything properly... > > >BTW. I don't quite understand what's the problem with bounce buffers > - can > >they be made to work out-of-the-box with large RAMs or can't they??? > As it > >is now (and has been for some time), the boot.flp dies on machines > with >= > >512MB RAM, and IMHO this shouldn't happen... > > Well, that's interesting since I installed 2.2.6 on a machine with > 512MB > RAM myself a couple of weeks ago and I'm pretty sure that this was > also > tested by Jordan prior to the release. Are your sure it doesn't > install for > you with 512MB of RAM? > > -DG > > David Greenman > Co-founder/Principal Architect, The FreeBSD Project > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?A03CD00C69B1D01195AB00A024ECEB167F9DCF>