The operating system parameters are tuned automatically
in the IBM® WebSphere® Application Server Hypervisor
Edition virtual image to optimize the performance of the included WebSphere Application Server
environment.
The Novell SLES 11 operating system included on your virtual images
have been tuned for increased performance. The following settings
and variables have been automatically set in the image:
- timeout_timewait parameter
- Linux file descriptors
(ulimit)
- The Linux file descriptors
specify the number of open files that are supported. The default setting
is typically sufficient for most applications. If the value set for
this parameter is too low, a file open error, a memory allocation
failure, or a connection establishment error might be displayed. Check
the UNIX reference pages on
the ulimit command for the syntax of different
shells. To set the ulimit command to 8192 for the
Korn shell (ksh), issue the ulimit -n 8192 command.
Use the ulimit -a command to display the current
values for all limitations on the system resources.
- Recommended value: 8192 files
- Connection backlog
- TCP_KEEPALIVE_INTERVAL parameter
- TCP_KEEPALIVE_PROBES parameter