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6871111: G1: remove the concurrent overhead tracker

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Removing the concurrent overhead tracker from G1, along with the GC overhead reporter and the G1AccountConcurrentOverhead (both of which rely on the the concurrent overhead tracker).

Reviewed-by: iveresov, johnc
This commit is contained in:
Antonios Printezis 2009-08-19 12:53:25 -04:00
parent ead860c069
commit 4d138cd094
19 changed files with 9 additions and 887 deletions
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18
hotspot/src/share/vm/gc_implementation/g1/g1MMUTracker.cpp
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@ -37,21 +37,7 @@
G1MMUTracker::G1MMUTracker(double time_slice, double max_gc_time) :
_time_slice(time_slice),
_max_gc_time(max_gc_time),
_conc_overhead_time_sec(0.0) { }
void
G1MMUTracker::update_conc_overhead(double conc_overhead) {
double conc_overhead_time_sec = _time_slice * conc_overhead;
if (conc_overhead_time_sec > 0.9 * _max_gc_time) {
// We are screwed, as we only seem to have <10% of the soft
// real-time goal available for pauses. Let's admit defeat and
// allow something more generous as a pause target.
conc_overhead_time_sec = 0.75 * _max_gc_time;
}
_conc_overhead_time_sec = conc_overhead_time_sec;
}
_max_gc_time(max_gc_time) { }
G1MMUTrackerQueue::G1MMUTrackerQueue(double time_slice, double max_gc_time) :
G1MMUTracker(time_slice, max_gc_time),
@ -128,7 +114,7 @@ double G1MMUTrackerQueue::longest_pause_internal(double current_time) {
while( 1 ) {
double gc_time =
calculate_gc_time(current_time + target_time) + _conc_overhead_time_sec;
calculate_gc_time(current_time + target_time);
double diff = target_time + gc_time - _max_gc_time;
if (!is_double_leq_0(diff)) {
target_time -= diff;