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Maintaining Novell eDirectory
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Tuning the Solaris Kernel
To optimize the performance of eDirectory on Solaris, set the following kernel variables in the /etc/
system:
Tuning the Solaris Network
You can enhance LDAP search performance using the Solaris ndd command. The following
command syntax allows you to analyze and modify tunable parameters that affect networking
operation and behavior:
ndd -set /dev/tcp
variable_name
variable_value
The recommended values for the variables are listed in the following table:
Fine-Tuning the Solaris File System
Novell eDirectory performance on Solaris can be improved if the Solaris file system is adequately
tuned, especially for bulk loading data into the directory. File system tuning for eDirectory is similar
to tuning for a database. See the
Sunworld* Web site (http://www.sunworld.com/sunworldonline)
for more information on the Solaris file system.
Parameter
Description
set maxphys=1048576
Maximum number of bytes that can be transferred
per SCSI transaction.
set md_maxphys=1048576
Maximum number of bytes that can be transferred
per SCSI transaction if you are using disksuite,
vol_maxio, or vxvm.
set ufs:ufs_LW=
1/128_of_available_memory
Barrier for the number of outstanding bytes on a
single file below which the condition variable on
which other sleeping processes are toggled.
set ufs:ufs_HW=
1/64_of_available_memory
Number of bytes outstanding on a single fail barrier
value.
ctcp:
tcp_conn_hash_size
=8192
Number of connection hash entries that are allocated
to quickly locate the kernel data structures that are
associated with TCP connection. (This can be
increased to 262144, based on the number of LDAP
clients.)
Parameter
Description
tcp_conn_req_max_q: 1024
The “q” stands for queue, which is the completed socket
holding pen where sockets remain until the application issues
accept.
tcp_time_wait_interval: 60000
Sets (in this case lowers) the time wait interval.
tcp_xmit_hiwat: 64000
tcp_xmit_lowat: 64000
Adjusts the minimum and maximum TCP send window size.
tcp_slow_start_initial: 2
Adjusts the number of first transmission packets from 1 to 2.
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