VAC Conflict - What Is It, What Can It Effect
(Doc ID 1008355.1)
Last updated on AUGUST 15, 2019
Applies to:Solaris Operating System - Version 8.0 and later
"VAC conflict" or "Virtual Address Cache conflict" is a situation that can happen when a page of memory is explicitly mapped by a program to a virtual address that conflicts with the virtual addresses of other mappings to the same
page of memory. The situation causes the Solaris[TM] operating system to have to work very hard to avoid data corruption. Visible symptoms are many CPU xcalls, mutex contention on an anon_array mutex, slow memory accesses
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