Re: Linux cannot use swap bigger then 460Mb ?

1998-12-04 Thread Raymond A. Ingles 
On Thu, 3 Dec 1998, Jan Krupa wrote:

 I have Pentium II, 512 Mb RAM, Linux debian 2.0,
 kernel 2.0.36
 I need quite big swap, so I created 7 swap partitions
 hda3,hda5,...,hda10, as seen below:
[...] 
 When the system is loading it prints that the 7 (seven)
 sawp partitions are activating, and that's mean that I have
 860Mb of swap.
 
 Unfortunately when the mathematica3.0 is running,
 after using (consuming) all RAM memory it can only 
 use up to 460Mb of swap and then it prints message:
 'out of memory' and exits the calculations

 Hmmm. You might want to ask on the [EMAIL PROTECTED] mailing
list. That's where the real kernel gurus hang out. I just saw today that
the 2.0.x kernels have problems with more than 960MB of RAM. The 2.1.X
kernels do better. The figure 512+460=972 is so close to that 960 number
that I wonder if they're related?

 I also know that Linux can't use more than 128MB of swap per partition,
but that doesn't seem to be your problem. I suppose you could see if maybe
there's a bad spot in one of the swap partitions - run mkswap again or
something.

 Beyond that, I can't really offer any suggestions. If it's any
consolation, I'm green with envy - I have a 486-100 with 64MB of RAM and
32MB of swap. :-

 Sincerely,

 Ray Ingles(248) 377-7735 [EMAIL PROTECTED]

 Economies don't like step functions. - Dr. Leonard Bieman

Linux cannot use swap bigger then 460Mb ?

1998-12-03 Thread Jan Krupa 
I have Pentium II, 512 Mb RAM, Linux debian 2.0,
kernel 2.0.36
I need quite big swap, so I created 7 swap partitions
hda3,hda5,...,hda10, as seen below:

/dev/hda1   *11  420  3175168+   7  OS/2 HPFS
/dev/hda2  421  421  438   1360806  DOS 16-bit =32M
/dev/hda3  439  439  456   136080   82  Linux swap
/dev/hda4  457  457  556   7560005  Extended
/dev/hda5  457  457  474   136048+  82  Linux swap
/dev/hda6  475  475  492   136048+  82  Linux swap
/dev/hda7  493  493  510   136048+  82  Linux swap
/dev/hda8  511  511  528   136048+  82  Linux swap
/dev/hda9  529  529  546   136048+  82  Linux swap
/dev/hda10 547  547  55675568+  82  Linux swap

When the system is loading it prints that the 7 (seven)
sawp partitions are activating, and that's mean that I have
860Mb of swap.


Unfortunately when the mathematica3.0 is running,
after using (consuming) all RAM memory it can only 
use up to 460Mb of swap and then it prints message:
'out of memory' and exits the calculations
(stop running the calculation) but it does not crush,
the front end of it and its kernel can be used further.
It is normal ? How can be the total swap amount (860Mb) used?
Does anybody have some idea, where could be reason
for such behaviour of Mathematica, Linux and swap?
(fault in kernel, my configurations of Linux, in Mathematica,
in my hard disk swap?) 

Here are some additional information
$ free
 total   used   free sharedbuffers cached
Mem:515772  57200 458572  32108   2444  32272
-/+ buffers/cache:  22484 493288
Swap:   860052   1300 858752

 fstab:
# /etc/fstab: static file system information.
#
# file system mount point type options  dump pass
/dev/hdc1 /  ext2 defaults,errors=remount-ro   0  1
/dev/hda3   noneswapsw  0   0
/dev/hda5   noneswapsw  0   0
/dev/hda6   noneswapsw  0   0
/dev/hda7   noneswapsw  0   0
/dev/hda8   noneswapsw  0   0
/dev/hda9   noneswapsw  0   0
/dev/hda10   noneswapsw  0   0
proc/proc   procdefaults0   0

I have tried to use kernel 2.1.126 but I could not compile
it although its configurations was  the same as
for the kernel 2.0.36 which was compiled successfully.

ps aux prints:
USER   PID %CPU %MEM  SIZE   RSS TTY STAT START   TIME COMMAND
daemon 111  0.0  0.0   792 0  ?  SW   11:42   0:00 (portmap)
daemon 134  0.0  0.0   84820  ?  S11:42   0:00 (atd)
krupa  148  0.0  0.2  1964  1268   3 S11:42   0:00 -bash
krupa  251  0.1  0.7  6100  3964   3 S12:19   0:00 emacs swap1
math   146  0.0  0.1  1936   712   1 S11:42   0:00 -bash
math   258  0.0  0.1   916   536   1 R12:29   0:00 ps aux
root 1  0.1  0.0   76896  ?  S11:42   0:03 init
root 2  0.0  0.0 0 0  ?  SW   11:42   0:00 (kflushd)
root 3  0.4  0.0 0 0  ?  SW  11:42   0:12 (kswapd)
root 4  0.0  0.0 0 0  ?  SW   11:42   0:00 (nfsiod)
root 5  0.0  0.0 0 0  ?  SW   11:42   0:00 (nfsiod)
root 6  0.0  0.0 0 0  ?  SW   11:42   0:00 (nfsiod)
root 7  0.0  0.0 0 0  ?  SW   11:42   0:00 (nfsiod)
root16  0.0  0.0   73228  ?  S11:42   0:00 update
root98  0.0  0.0   900   200  ?  S11:42   0:00 /sbin/syslogd
root   100  0.0  0.0   91272  ?  S11:42   0:00 (klogd)
root   107  0.0  0.0   75264  ?  S11:42   0:00 /sbin/kerneld
root   113  0.0  0.0   86816  ?  S11:42   0:00 (inetd)
root   117  0.0  0.0   760   132  ?  S11:42   
0:00 /usr/sbin/gpm -m /devroot   122  0.0  0.0   91224  ?  S
11:42   0:00 (lpd)
root   137  0.0  0.0   860   172  ?  S11:42   0:00 /usr/sbin/cron
root   147  0.0  0.2  1948  1248   2 S11:42   0:00 -bash
root   149  0.0  0.0   84444   4 S11:42   0:00 (getty)
root   150  0.0  0.0   844 8   5 S11:42   0:00 (getty)
root   151  0.0  0.0   84412   6 S11:42   0:00 (getty)


Please send the answer to '[EMAIL PROTECTED]'
because the mailing list is too busy to me so I could miss the answer.

Thanks in advance,

Jan Krupa

Re: Linux cannot use swap bigger then 460Mb ?

1998-12-03 Thread Blazej Sawionek 
Maybe you can find this useful:

Adrian Bridgett wrote:
  Linux can per default only handle swap-partitions = 128 MB
 The latest 2.1 kernels raise this to just shy of 2GB :-)
 
 You will need a new version of util-linux which I am about to do an NMU of -
 util-linux-2.9e-0.1 will be the name.

BTW: what about printing .ps files on your remote printer?

Blazej