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Solaris Tunable Parameters Reference Manual - SCN Research

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Default<br />

Range<br />

Dynamic?<br />

When to Change<br />

Commitment Level<br />

1 (Enabled)<br />

0 (disabled) or 1 (enabled)<br />

Yes<br />

If you do not want this parameter enabled for debugging<br />

purposes or for any other reasons, disable it.<br />

Unstable<br />

Change History For information, see “ip_multidata_outbound (<strong>Solaris</strong> 9<br />

8/03)” on page 188.<br />

ip_squeue_worker_wait<br />

Description<br />

Default<br />

Range<br />

Dynamic?<br />

When to Change<br />

Governs the maximum delay in waking up a worker thread to<br />

process TCP/IP packets that are enqueued on an squeue. An<br />

squeue is a serialization queue that is used by the TCP/IP<br />

kernel code to process TCP/IP packets.<br />

10 milliseconds<br />

0 – 50 milliseconds<br />

Yes<br />

Consider tuning this parameter if latency is an issue, and<br />

network traffic is light. For example, if the machine serves<br />

mostly interactive network traffic.<br />

The default value usually works best on a network file server,<br />

a web server, or any server that has substantial network traffic.<br />

Commitment Level<br />

Unstable<br />

ip_squeue_write<br />

Description<br />

Default 2<br />

Range 0 to 2<br />

Governs the behavior of squeue operations while processing<br />

TCP/IP packets coming from the application.<br />

A value of 1 causes the running thread to process the current<br />

packet only. A value of 2 causes the running thread to process<br />

all packets that are queued on the squeue.<br />

Dynamic?<br />

Yes<br />

140 <strong>Solaris</strong> <strong>Tunable</strong> <strong>Parameters</strong> <strong>Reference</strong> <strong>Manual</strong> • June 2005

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