[kde-solaris] ... people are running KDE3 on systems with as
little as 64MB for daily use.
maeder at mathconsult.ch
Wed Jan 28 15:44:00 CET 2004
> > Additionally, the '/tmp' file system (by
> > default) is allocated from the space of available memory.
> This is what i am not sure about. My understanding is that, on
> Solaris, if /tmp is not mounted on its separate disk partition, the
> kernel will create a TMPFS partition on /tmp when mounting swap, at
> boot time, and mount swap on it -- if this is not true, and i am
> being bogus, please say so. :-)
if you have a line like
swap - /tmp tmpfs - yes -
in your /etc/vfstab, it will use swap for /tmp. This is in
/etc/init.d/buildmnttab. You can also tell by doing a "df /tmp";
this will tell you where it's mounted from. Additionally it mounts swap
> With this configuration, this
> explains why, when rebooting Solaris, the files in /tmp are gone, and
> /tmp is re-created.
Solaris (8) always erases /tmp on boot, whether on disk or swap space.
This is in /etc/init.d/RMTMPFILES
I find the swapping behaviour of Solaris (8) quite reasonable. At the
moment I have, on an old UltraSPARC 2, 768MB of RAM; total virtual
address space used is 488MB (KDE plus StarOffice), together with 140MB
in /tmp this still leaves me some RAM. Indeed the system never even
touched the swap partitions since the last boot. You can tell by looking
at "swap -l"
swapfile dev swaplo blocks free
/dev/dsk/c0t1d0s1 32,9 16 2068400 2068400
/dev/dsk/c0t0d0s1 32,1 16 2068400 2068400
the last column will permanently go down, if it ever pages stuff to disk.
If you have a separate partition for /tmp, get rid of it and assign all
to swap, and mount it on /tmp; This makes better use of disk space and
speeds up everything (you may have to use TMPDIR=/tmp for some programs
that by default use /var/tmp).
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