Date: Thu, 31 Mar 2005 02:19:21 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Ronald Klop <ronald-freebsd8@klop.yi.org> Cc: freebsd-stable@freebsd.org Subject: Re: syscons options and memory use Message-ID: <20050331081921.GF46288@dan.emsphone.com> In-Reply-To: <opsohr79r68527sy@smtp.local> References: <opsohplwph8527sy@smtp.local> <20050331070409.GD46288@dan.emsphone.com> <opsohr79r68527sy@smtp.local>
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In the last episode (Mar 31), Ronald Klop said: > On Thu, 31 Mar 2005 01:04:10 -0600, Dan Nelson <dnelson@allantgroup.com> > wrote: > >In the last episode (Mar 31), Ronald Klop said: > >>The syscons manual page says: > >>" The following options will remove some features from the syscons > >> driver and save kernel memory. > >> [...] > >> SC_NO_SYSMOUSE > >> This option removes mouse support in the syscons driver. > >> The mouse daemon moused(8) will fail if this option is > >> defined. This option implies the SC_NO_CUTPASTE option > >> too. > >>" > >> > >>How much memory does this save (or how can I discover that)? Is it worth > >>it on a 96MB PentiumII laptop? > > > >I would guess that the memory savings is probably on the order of > >kilobytes. Useful if you're trying to prevent excessive swapping on an > >8MB system. Not worth disabling on your system. > > How can I see the size of my kernel? > I know vmstat -m and netstat -m, but from that info I don't see if I > reduced the memory footprint after disabling an option or device. For the kernel size itself, just "ls -l /boot/kernel/kernel" :) A more interesting number might be the output of "sysctl hw.usermem", which I believe is the amount of memory available to user processes. -- Dan Nelson dnelson@allantgroup.com
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