reduce-lock-contention
reduce-lock-contention
Examine specified annotated sites
for opportunities to reduce lock contention or find deadlocks in a Suitability
report.
GUI Equivalent
Syntax
--reduce-lock-contention
=
<string>
Arguments
<string>
is a comma-separated
list of annotated sites (no spaces).
Default
No default argument
Actions Modified
report
=suitability
Usage
Lock contention is the time one thread spends waiting
for a lock to be released while another thread holds that lock (as opposed to
lock overhead, which is the time spent creating, destroying, acquiring, and
releasing locks). You can reduce lock contention by using different locks for
unrelated data when you convert to a parallel framework.
Usage of this option simulates parallel execution with
the assumption that lock contention is zero for a specified site.
Example
Generate a Suitability report. Examine the annotated
sites
myAnnotatedSiteJ
and
myAnnotatedSiteX
for opportunities to reduce lock
contention. Write the report to
stdout
.
advisor --report=suitability --reduce-lock-contention=myAnnotatedSiteJ,myAnnotatedSiteX --project-dir=./advi_results