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Diffstat (limited to 'src/zihintpause.tex')
| -rw-r--r-- | src/zihintpause.tex | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/zihintpause.tex b/src/zihintpause.tex index c739e61..fc77b98 100644 --- a/src/zihintpause.tex +++ b/src/zihintpause.tex @@ -22,6 +22,7 @@ polling for. The duration of a PAUSE instruction's effect may vary significantly within and among implementations. +In typical implementations this duration should be much less than the time to perform a context switch, probably more on the rough order of an on-chip cache miss latency or a cacheless access to main memory. Portable software should not use more than one PAUSE instruction before re-evaluating loop conditions, else performance might substantially degrade on other implementations, or even on some executions on the same implementation. |