At 12:48 PM +1100 9/8/00, Andrew Vincent wrote:
>Does anyone know how to change the value of virtual memory? I am 
>getting a virtual memory exhausted error. I know how to find the 
>values for bash "ulimit

Is this a process error, or a system error?  If the problem is 
system-wide exhaustion of available VM then you need to add swap 
space, not play with process limits.

If it's really a process limit then man sh under built-ins shows:

      ulimit [-H | -S] [-a | -tfdscmlpn [value]]
             Inquire about or set the hard or soft limits on processes or set
             new limits. The choice between hard limit (which no process is al-
             lowed to violate, and which may not be raised once it has been
             lowered) and soft limit (which causes processes to be signaled but
             not necessarily killed, and which may be raised) is made with
             these flags:

             -H          set or inquire about hard limits

             -S          set or inquire about soft limits. If neither -H nor -S
                         is specified, the soft limit is displayed or both lim-
                         its are set. If both are specified, the last one wins.

             The limit to be interrogated or set, then, is chosen by specifying
             any one of these flags:

             -a          show all the current limits

             -t          show or set the limit on CPU time (in seconds)

             -f          show or set the limit on the largest file that can be
                         created (in 512-byte blocks)

             -d          show or set the limit on the data segment size of a
                         process (in kilobytes)

             -s          show or set the limit on the stack size of a process
                         (in kilobytes)

             -c          show or set the limit on the largest core dump size
                         that can be produced (in 512-byte blocks)

             -m          show or set the limit on the total physical memory
                         that can be in use by a process (in kilobytes)

             -l          show or set the limit on how much memory a process can
                         lock with mlock(2) (in kilobytes)

             -p          show or set the limit on the number of processes this
                         user can have at one time

             -n          show or set the limit on the number files a process
                         can have open at once

             If none of these is specified, it is the limit on file size that
             is shown or set. If value is specified, the limit is set to that
             number; otherwise the current limit is displayed.

             Limits of an arbitrary process can be displayed or set using the
             sysctl(8) utility.

And you might need to change -d, -s, or -m.


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