ken mays wrote:
[snip]
Mark Martin wrote:
[snip]
Assuming you only use UFS and cut-down some system
tuneables Solaris can
run on a 64MB machine (my Ultra5 only has 128MB now after
one of the
DIMMs failed and it still works fine with CDE). The
problems start if
you want to run some of the memory-hogs, e.g. ZFS, JAVA or
a X11 server
- then you either need a swap device or much more memory.
You should take to the 32MB of RAM level. How about playback of MPEG-2
streams or MP3 audio using OpenSolaris in a 32 MB RAM embedded
environment solution.
Booting plain OpenSolaris with a 32MB machine may be possible (remember
original versions of Solaris 2.x had no problems with that) ... but
MPEG-2 video stream playback will itself consume lots of memory since
you have to do buffering, including I frames, data for the P/B frames
etc. ... and system stream playback (system stream == interleaved
video+audio streams) will require even more memory. I don't know whether
this is possible...
I did perform some low memory test experiments and I can tell you ( with
plenty of data ) that a Solaris machine pushed to do any work with low
memory will rapidly become a space heater. You may get a response from the
console ... or not.
Either way, 1GB of memory should be seen as the rock bottom minimal config
these days.
$ su -
Password:
Feb 25 12:53:45 aequitas su: 'su root' succeeded for dclarke on /dev/console
Sun Microsystems Inc. SunOS 5.11 gazelle Dec. 12, 2007
SunOS Internal Development: dclarke 2007-12-12 [gazelle]
bfu'ed from /export/gazelle/archives/i386/nightly on 2007-12-12
Sun Microsystems Inc. SunOS 5.11 snv_70b October 2007
# mdb -k
Loading modules: [ unix genunix specfs cpu.generic uppc pcplusmp scsi_vhci
ufs
ip hook neti sctp arp usba uhci fctl nca lofs zfs random fcip logindmux
ptm sppp ]
pageout_new_spread/X
pageout_new_spread:
pageout_new_spread: 27702
handspreadpages/X
handspreadpages:
handspreadpages:5b3e
lotsfree/X
lotsfree:
lotsfree: 2d9
deficit/X
deficit:
deficit:0
slowscan/X
slowscan:
slowscan: 64
fastscan/X
fastscan:
fastscan: 5b3e
minfree/X
minfree:
minfree:b6
Please take note of lotsfree, fastscan and minfree there.
Here comes the situation after attempting to compile the ON kernel after
40 days of non-stop load with 192MB of memory :
[ I hope this doesn't line wrap at 72 chars ]
::kmastat
cache bufbufbufmemory alloc alloc
name size in use totalin use succeed fail
- -- -- -- -- - -
kmem_magazine_1 8 19507 12288B123304 0
kmem_magazine_3 16 80 1143 36864B904298 0
kmem_magazine_7 32 77 1134 73728B 2126812 0
kmem_magazine_1564 61341 45056B 7193629 0
kmem_magazine_31 128 0 0 0B 0 0
kmem_magazine_47 192 0 0 0B 0 0
kmem_magazine_63 256 0 0 0B 0 0
kmem_magazine_95 384 0 0 0B 0 0
kmem_magazine_143 576 0 0 0B 0 0
kmem_slab_cache 28 15151 15288745472B825744 0
kmem_bufctl_cache 12 4127 4096B 4 0
kmem_bufctl_audit_cache100 558650 558657 69341184B 23614865 0
kmem_va_4096 4096 9439 9440 38666240B 50389 0
kmem_va_8192 8192454496 4063232B 43692 0
kmem_va_1228812288546970 12713984B 55116 0
kmem_va_1638416384 6 8131072B 7 0
kmem_va_2048020480 65 78 1703936B 511 0
kmem_va_2457624576 0 0 0B 0 0
kmem_va_2867228672 8 8262144B12 0
kmem_va_3276832768 0 0 0B 0 0
kmem_alloc_8 8 9639 15130364544B 24894004 0
kmem_alloc_16 16 10197 13952446464B 8540073 0
kmem_alloc_24 24 7830 13260532480B 32802752 0
kmem_alloc_32 32 10916 17340835584B 11617539 0
kmem_alloc_40 40 8786 12118679936B 13100776 0
kmem_alloc_48 48 7278 10752688128B 2209134 0
kmem_alloc_56 56 2146 5320389120B 1782146 0
kmem_alloc_64 64936 3168405504B 47759338 0
kmem_alloc_80 80 4305 5964581632B 2309670 0
kmem_alloc_96 96 1311 2016229376B279376 0
kmem_alloc_112 112177448 57344B733256 0
kmem_alloc_128 128117189 36864B 3054652 0
kmem_alloc_160 160 4744 5129913408B 374585519 0
kmem_alloc_192 192 92144 36864B 1091937 0
kmem_alloc_224 224158
