• 2019 Update 3
  • 03/07/2019
  • Public Content
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Contents

Syntax
PCTRACE-CACHE [on|off]
Variable
VT_PCTRACE_CACHE
Default
on
Description
When the reliable stack unwinding through
libunwind
is used, caching the previous stack back trace can reduce the number of times
libunwind
has to be called later on. When unwinding only a few levels this caching can negatively affect performance, therefore it can be turned off with this option.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804