Installation guide

• Section 2.4.2.4, “File Descriptors”

2.4.2.1. Perl Prerequisites

On Solaris systems, Red Hat Directory Server is installed with a Perl package, RHATperlx, that

must be used. This package contains a 64-bit version of Perl 5.8. It is not possible to use the

Perl version installed in /usr/bin/perl on Solaris because it is 32 bit and will not work with

Directory Server's 64-bit components.

2.4.2.2. TCP Tuning

Edit the Solaris TCP configuration Directory Server can access local system ports better. If

tuned properly, this may enhance network connection speeds. The maximum achievable

throughput for a single TCP connection is determined by several factors, including the maximum

bandwidth on the slowest link on the path, bit errors that limit connections, and the total

round-trip time.

The configuration that must be edited is in the /dev/tcp directory. Reset the following

parameters:

• tcp_time_wait_interval determines the time (in milliseconds) that a TCP connection

remains in a kernel's table after being closed. If its value is above 30000 (or 30 seconds) and

the directory is being used in a LAN, MAN, or other network connection, reduce the value by

modifying the /etc/init.d/inetinit file:

ndd -set /dev/tcp tcp_time_wait_interval 30000

• The tcp_conn_req_max_q0 and tcp_conn_req_max_q parameters control the connection's

maximum backlog that gets accepted by the kernel. If a directory is used by a large number of

client hosts simultaneously, increase these values by at least 1024. Edit the

/etc/init.d/inetinit file:

ndd -set /dev/tcp tcp_conn_req_max_q0 1024

ndd -set /dev/tcp tcp_conn_req_max_q 1024

• The tcp_keepalive_interval setting determines the duration (in seconds) between the

keepalive packets sent for each open TCP connection. Edit this setting to remove client

connections that disconnect from the network.

• Check the tcp_rexmit_interval_initial parameter value for server maintenance testing

on a high speed LAN, MAN, or other network connection. For wide area networks, you do not

have to change the tcp_rexmit_interval_initial value.

• The tcp_smallest_anon_port setting determines the number of simultaneous server

Chapter 2. System Requirements