diff -r d6e7180abab5 -r 6aa49042b101 src/share/vm/runtime/sweeper.cpp --- a/src/share/vm/runtime/sweeper.cpp Thu Dec 19 06:09:16 2013 +0100 +++ b/src/share/vm/runtime/sweeper.cpp Thu Dec 19 14:08:02 2013 +0100 @@ -129,6 +129,7 @@ nmethod* NMethodSweeper::_current = NULL; // Current nmethod long NMethodSweeper::_traversals = 0; // Stack scan count, also sweep ID. +long NMethodSweeper::_total_nof_code_cache_sweeps = 0; // Total number of full sweeps of the code cache long NMethodSweeper::_time_counter = 0; // Virtual time used to periodically invoke sweeper long NMethodSweeper::_last_sweep = 0; // Value of _time_counter when the last sweep happened int NMethodSweeper::_seen = 0; // Nof. nmethod we have currently processed in current pass of CodeCache @@ -143,13 +144,16 @@ // 1) alive -> not_entrant // 2) not_entrant -> zombie // 3) zombie -> marked_for_reclamation +int NMethodSweeper::_hotness_counter_reset_val = 0; -int NMethodSweeper::_total_nof_methods_reclaimed = 0; // Accumulated nof methods flushed -Tickspan NMethodSweeper::_total_time_sweeping; // Accumulated time sweeping -Tickspan NMethodSweeper::_total_time_this_sweep; // Total time this sweep -Tickspan NMethodSweeper::_peak_sweep_time; // Peak time for a full sweep -Tickspan NMethodSweeper::_peak_sweep_fraction_time; // Peak time sweeping one fraction -int NMethodSweeper::_hotness_counter_reset_val = 0; +long NMethodSweeper::_total_nof_methods_reclaimed = 0; // Accumulated nof methods flushed +long NMethodSweeper::_total_nof_c2_methods_reclaimed = 0; // Accumulated nof methods flushed +size_t NMethodSweeper::_total_flushed_size = 0; // Total number of bytes flushed from the code cache +Tickspan NMethodSweeper::_total_time_sweeping; // Accumulated time sweeping +Tickspan NMethodSweeper::_total_time_this_sweep; // Total time this sweep +Tickspan NMethodSweeper::_peak_sweep_time; // Peak time for a full sweep +Tickspan NMethodSweeper::_peak_sweep_fraction_time; // Peak time sweeping one fraction + class MarkActivationClosure: public CodeBlobClosure { @@ -292,6 +296,7 @@ // We are done with sweeping the code cache once. if (_sweep_fractions_left == 0) { + _total_nof_code_cache_sweeps++; _last_sweep = _time_counter; // Reset flag; temporarily disables sweeper _should_sweep = false; @@ -378,6 +383,7 @@ _total_time_sweeping += sweep_time; _total_time_this_sweep += sweep_time; _peak_sweep_fraction_time = MAX2(sweep_time, _peak_sweep_fraction_time); + _total_flushed_size += freed_memory; _total_nof_methods_reclaimed += _flushed_count; EventSweepCodeCache event(UNTIMED); @@ -509,6 +515,9 @@ tty->print_cr("### Nmethod %3d/" PTR_FORMAT " (marked for reclamation) being flushed", nm->compile_id(), nm); } freed_memory = nm->total_size(); + if (nm->is_compiled_by_c2()) { + _total_nof_c2_methods_reclaimed++; + } release_nmethod(nm); _flushed_count++; } else { @@ -547,6 +556,9 @@ SWEEP(nm); // No inline caches will ever point to osr methods, so we can just remove it freed_memory = nm->total_size(); + if (nm->is_compiled_by_c2()) { + _total_nof_c2_methods_reclaimed++; + } release_nmethod(nm); _flushed_count++; } else { @@ -634,3 +646,13 @@ xtty->end_elem(); } } + +void NMethodSweeper::print() { + ttyLocker ttyl; + tty->print_cr("Code cache sweeper statistics:"); + tty->print_cr(" Total sweep time: %1.0lfms", (double)_total_time_sweeping.value()/1000000); + tty->print_cr(" Total number of full sweeps: %ld", _total_nof_code_cache_sweeps); + tty->print_cr(" Total number of flushed methods: %ld(%ld C2 methods)", _total_nof_methods_reclaimed, + _total_nof_c2_methods_reclaimed); + tty->print_cr(" Total size of flushed methods: " SIZE_FORMAT "kB", _total_flushed_size/K); +}