Installation guide

• maxcallouts
• nclist
• nquota
• nvnode
• ndquot
• task_max
5.6.1.7 Maximum Number of clists
The nclist keyword is based on the maxusers keyword and defines the
number of clists available on the system. Each clist is a buffer for terminal
I/O. The nclist keyword overrides the default value for nclist in the
param.c file. The default value should be sufficient for most
configurations. Exceptions include third-party asynchronous boards and
layered products that perform terminal emulation.
5.6.1.8 Maximum Number of Open Files
The max_vnodes keyword defines the maximum number of VFS files that
can be open at a given time system-wide. Each open file is associated with
a vnode. If more vnodes are available on the system, more files can be
open. However, more system memory is consumed.
On 24 MB systems, this keyword is defined to 1000 by default. For larger
systems, the default value is calculated based on system memory size and
the percentage of total memory that can be used for vnodes (5 percent by
default).
The following example shows the max_vnodes keyword set to 1000:
max_vnodes 1000
5.6.1.9 Maximum Number of Threads
The maxuthreads keyword defines the maximum number of threads per
task. This limit applies to nonprivileged tasks. A task running with
superuser privilege can exceed the maxuthreads limit.
5.6.1.10 Maximum Number of System Threads
The threadmax keyword defines the maximum number of threads that can
be allocated on the system. This limit is systemwide. The following
Configuring the Kernel 5–43