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8282484: G1: Predicted old time in log always zero

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Reviewed-by: ayang, iwalulya
This commit is contained in:
Thomas Schatzl 2022-03-03 09:26:41 +00:00
parent b1f935c1d0
commit d4d1fbc27a
1 changed files with 3 additions and 4 deletions
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7
src/hotspot/share/gc/g1/g1Policy.cpp
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@ -1313,7 +1313,6 @@ void G1Policy::calculate_old_collection_set_regions(G1CollectionSetCandidates* c
num_optional_regions = 0;
uint num_expensive_regions = 0;
double predicted_old_time_ms = 0.0;
double predicted_initial_time_ms = 0.0;
double predicted_optional_time_ms = 0.0;
@ -1344,7 +1343,7 @@ void G1Policy::calculate_old_collection_set_regions(G1CollectionSetCandidates* c
time_remaining_ms = MAX2(time_remaining_ms - predicted_time_ms, 0.0);
// Add regions to old set until we reach the minimum amount
if (num_initial_regions < min_old_cset_length) {
predicted_old_time_ms += predicted_time_ms;
predicted_initial_time_ms += predicted_time_ms;
num_initial_regions++;
// Record the number of regions added with no time remaining
if (time_remaining_ms == 0.0) {
@ -1358,7 +1357,7 @@ void G1Policy::calculate_old_collection_set_regions(G1CollectionSetCandidates* c
} else {
// Keep adding regions to old set until we reach the optional threshold
if (time_remaining_ms > optional_threshold_ms) {
predicted_old_time_ms += predicted_time_ms;
predicted_initial_time_ms += predicted_time_ms;
num_initial_regions++;
} else if (time_remaining_ms > 0) {
// Keep adding optional regions until time is up.
@ -1382,7 +1381,7 @@ void G1Policy::calculate_old_collection_set_regions(G1CollectionSetCandidates* c
}
log_debug(gc, ergo, cset)("Finish choosing collection set old regions. Initial: %u, optional: %u, "
"predicted old time: %1.2fms, predicted optional time: %1.2fms, time remaining: %1.2f",
"predicted initial time: %1.2fms, predicted optional time: %1.2fms, time remaining: %1.2f",
num_initial_regions, num_optional_regions,
predicted_initial_time_ms, predicted_optional_time_ms, time_remaining_ms);
}