Oracle^® Solaris 11.3 Release Notes

Performance Issues

This section describes the performance issues in the Oracle Solaris 11.3 release.

Runnable Thread Occasionally Stays in Run Queue for a Longer Period (17697871)

Sometime transient threads stay longer on the CPU. Currently, the kernel has no mechanism to detect long-running transient threads. When this condition occurs, a single runnable thread on a CPU's run queue can starve, leading to various issues such as a drop in performance and node eviction.

Workaround: Disable transient threads by setting the following attributes in the /etc/system file:

thread_transience_kernel=0
thread_transience_user=0

SPARC: Multiple Memory DR Operations Might Trigger Limited Calls to the defdump_init() Function (19651809)

Because each memory dynamic reconfiguration (DR) operation might trigger multiple deferred dump reinitializations, DR operations might be slow.

Workaround: Disable deferred dump by running the following command:

# dumpadm -D off