jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp@c96030fff130 (annotated)

src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp@c96030fff130 (annotated)

src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp

Thu, 20 Nov 2008 16:56:09 -0800

author: ysr
date: Thu, 20 Nov 2008 16:56:09 -0800
changeset 888: c96030fff130
parent 435: a61af66fc99e
child 1040: 98cb887364d3
permissions: -rw-r--r--

6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa

 /*
  * Copyright 2004-2005 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 // CMSGCAdaptivePolicyCounters is a holder class for performance counters
 // that track the data and decisions for the ergonomics policy for the
 // concurrent mark sweep collector
 class CMSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {
   friend class VMStructs;
  private:
   // Capacity of tenured generation recorded at the end of
   // any collection.
   PerfVariable* _cms_capacity_counter; // Make this common with PS _old_capacity
   // Average stop-the-world pause time for both initial and
   // remark pauses sampled at the end of the checkpointRootsFinalWork.
   PerfVariable* _avg_cms_STW_time_counter;
   // Average stop-the-world (STW) GC cost for the STW pause time
   // _avg_cms_STW_time_counter.
   PerfVariable* _avg_cms_STW_gc_cost_counter;
 #ifdef NOT_PRODUCT
   // These are useful to see how the most recent values of these
   // counters compare to their respective averages but
   // do not control behavior.
   PerfVariable* _initial_pause_counter;
   PerfVariable* _remark_pause_counter;
 #endif
   // Average of the initial marking pause for a concurrent collection.
   PerfVariable* _avg_initial_pause_counter;
   // Average of the remark pause for a concurrent collection.
   PerfVariable* _avg_remark_pause_counter;
   // Average for the sum of all the concurrent times per collection.
   PerfVariable* _avg_concurrent_time_counter;
   // Average for the time between the most recent end of a
   // concurrent collection and the beginning of the next
   // concurrent collection.
   PerfVariable* _avg_concurrent_interval_counter;
   // Average of the concurrent GC costs based on _avg_concurrent_time_counter
   // and _avg_concurrent_interval_counter.
   PerfVariable* _avg_concurrent_gc_cost_counter;
   // Average of the free space in the tenured generation at the
   // end of the sweep of the tenured generation.
   PerfVariable* _avg_cms_free_counter;
   // Average of the free space in the tenured generation at the
   // start of the sweep of the tenured genertion.
   PerfVariable* _avg_cms_free_at_sweep_counter;
   // Average of the free space in the tenured generation at the
   // after any resizing of the tenured generation at the end
   // of a collection of the tenured generation.
   PerfVariable* _avg_cms_promo_counter;
   // Average of  the mark-sweep-compact (MSC) pause time for a collection
   // of the tenured generation.
   PerfVariable* _avg_msc_pause_counter;
   // Average for the time between the most recent end of a
   // MSC collection and the beginning of the next
   // MSC collection.
   PerfVariable* _avg_msc_interval_counter;
   // Average for the GC cost of a MSC collection based on
   // _avg_msc_pause_counter and _avg_msc_interval_counter.
   PerfVariable* _msc_gc_cost_counter;
   // Average of  the mark-sweep (MS) pause time for a collection
   // of the tenured generation.
   PerfVariable* _avg_ms_pause_counter;
   // Average for the time between the most recent end of a
   // MS collection and the beginning of the next
   // MS collection.
   PerfVariable* _avg_ms_interval_counter;
   // Average for the GC cost of a MS collection based on
   // _avg_ms_pause_counter and _avg_ms_interval_counter.
   PerfVariable* _ms_gc_cost_counter;
   // Average of the bytes promoted per minor collection.
   PerfVariable* _promoted_avg_counter;
   // Average of the deviation of the promoted average
   PerfVariable* _promoted_avg_dev_counter;
   // Padded average of the bytes promoted per minor colleciton
   PerfVariable* _promoted_padded_avg_counter;
   // See description of the _change_young_gen_for_maj_pauses
   // variable recently in cmsAdaptiveSizePolicy.hpp.
   PerfVariable* _change_young_gen_for_maj_pauses_counter;
   // See descriptions of _remark_pause_old_slope, _initial_pause_old_slope,
   // etc. variables recently in cmsAdaptiveSizePolicy.hpp.
   PerfVariable* _remark_pause_old_slope_counter;
   PerfVariable* _initial_pause_old_slope_counter;
   PerfVariable* _remark_pause_young_slope_counter;
   PerfVariable* _initial_pause_young_slope_counter;
   CMSAdaptiveSizePolicy* cms_size_policy() {
     assert(_size_policy->kind() ==
       AdaptiveSizePolicy::_gc_cms_adaptive_size_policy,
       "Wrong size policy");
     return (CMSAdaptiveSizePolicy*)_size_policy;
   }
   inline void update_avg_cms_STW_time_counter() {
     _avg_cms_STW_time_counter->set_value(
       (jlong) (cms_size_policy()->avg_cms_STW_time()->average() *
       (double) MILLIUNITS));
   }
   inline void update_avg_cms_STW_gc_cost_counter() {
     _avg_cms_STW_gc_cost_counter->set_value(
       (jlong) (cms_size_policy()->avg_cms_STW_gc_cost()->average() * 100.0));
   }
   inline void update_avg_initial_pause_counter() {
     _avg_initial_pause_counter->set_value(
       (jlong) (cms_size_policy()->avg_initial_pause()->average() *
       (double) MILLIUNITS));
   }
 #ifdef NOT_PRODUCT
   inline void update_avg_remark_pause_counter() {
     _avg_remark_pause_counter->set_value(
       (jlong) (cms_size_policy()-> avg_remark_pause()->average() *
       (double) MILLIUNITS));
   }
   inline void update_initial_pause_counter() {
     _initial_pause_counter->set_value(
       (jlong) (cms_size_policy()->avg_initial_pause()->average() *
       (double) MILLIUNITS));
   }
 #endif
   inline void update_remark_pause_counter() {
     _remark_pause_counter->set_value(
       (jlong) (cms_size_policy()-> avg_remark_pause()->last_sample() *
       (double) MILLIUNITS));
   }
   inline void update_avg_concurrent_time_counter() {
     _avg_concurrent_time_counter->set_value(
       (jlong) (cms_size_policy()->avg_concurrent_time()->last_sample() *
       (double) MILLIUNITS));
   }
   inline void update_avg_concurrent_interval_counter() {
     _avg_concurrent_interval_counter->set_value(
       (jlong) (cms_size_policy()->avg_concurrent_interval()->average() *
       (double) MILLIUNITS));
   }
   inline void update_avg_concurrent_gc_cost_counter() {
     _avg_concurrent_gc_cost_counter->set_value(
       (jlong) (cms_size_policy()->avg_concurrent_gc_cost()->average() * 100.0));
   }
   inline void update_avg_cms_free_counter() {
     _avg_cms_free_counter->set_value(
       (jlong) cms_size_policy()->avg_cms_free()->average());
   }
   inline void update_avg_cms_free_at_sweep_counter() {
     _avg_cms_free_at_sweep_counter->set_value(
       (jlong) cms_size_policy()->avg_cms_free_at_sweep()->average());
   }
   inline void update_avg_cms_promo_counter() {
     _avg_cms_promo_counter->set_value(
       (jlong) cms_size_policy()->avg_cms_promo()->average());
   }
   inline void update_avg_old_live_counter() {
     _avg_old_live_counter->set_value(
       (jlong)(cms_size_policy()->avg_old_live()->average())
     );
   }
   inline void update_avg_msc_pause_counter() {
     _avg_msc_pause_counter->set_value(
       (jlong) (cms_size_policy()->avg_msc_pause()->average() *
       (double) MILLIUNITS));
   }
   inline void update_avg_msc_interval_counter() {
     _avg_msc_interval_counter->set_value(
       (jlong) (cms_size_policy()->avg_msc_interval()->average() *
       (double) MILLIUNITS));
   }
   inline void update_msc_gc_cost_counter() {
     _msc_gc_cost_counter->set_value(
       (jlong) (cms_size_policy()->avg_msc_gc_cost()->average() * 100.0));
   }
   inline void update_avg_ms_pause_counter() {
     _avg_ms_pause_counter->set_value(
       (jlong) (cms_size_policy()->avg_ms_pause()->average() *
       (double) MILLIUNITS));
   }
   inline void update_avg_ms_interval_counter() {
     _avg_ms_interval_counter->set_value(
       (jlong) (cms_size_policy()->avg_ms_interval()->average() *
       (double) MILLIUNITS));
   }
   inline void update_ms_gc_cost_counter() {
     _ms_gc_cost_counter->set_value(
       (jlong) (cms_size_policy()->avg_ms_gc_cost()->average() * 100.0));
   }
   inline void update_major_gc_cost_counter() {
     _major_gc_cost_counter->set_value(
       (jlong)(cms_size_policy()->cms_gc_cost() * 100.0)
     );
   }
   inline void update_mutator_cost_counter() {
     _mutator_cost_counter->set_value(
       (jlong)(cms_size_policy()->mutator_cost() * 100.0)
     );
   }
   inline void update_avg_promoted_avg(CMSGCStats* gc_stats) {
     _promoted_avg_counter->set_value(
       (jlong)(gc_stats->avg_promoted()->average())
     );
   }
   inline void update_avg_promoted_dev(CMSGCStats* gc_stats) {
     _promoted_avg_dev_counter->set_value(
       (jlong)(gc_stats->avg_promoted()->deviation())
     );
   }
   inline void update_avg_promoted_padded_avg(CMSGCStats* gc_stats) {
     _promoted_padded_avg_counter->set_value(
       (jlong)(gc_stats->avg_promoted()->padded_average())
     );
   }
   inline void update_remark_pause_old_slope_counter() {
     _remark_pause_old_slope_counter->set_value(
       (jlong)(cms_size_policy()->remark_pause_old_slope() * 1000)
     );
   }
   inline void update_initial_pause_old_slope_counter() {
     _initial_pause_old_slope_counter->set_value(
       (jlong)(cms_size_policy()->initial_pause_old_slope() * 1000)
     );
   }
   inline void update_remark_pause_young_slope_counter() {
     _remark_pause_young_slope_counter->set_value(
       (jlong)(cms_size_policy()->remark_pause_young_slope() * 1000)
     );
   }
   inline void update_initial_pause_young_slope_counter() {
     _initial_pause_young_slope_counter->set_value(
       (jlong)(cms_size_policy()->initial_pause_young_slope() * 1000)
     );
   }
   inline void update_change_young_gen_for_maj_pauses() {
     _change_young_gen_for_maj_pauses_counter->set_value(
       cms_size_policy()->change_young_gen_for_maj_pauses());
   }
  public:
   CMSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,
                               AdaptiveSizePolicy* size_policy);
   // update counters
   void update_counters();
   void update_counters(CMSGCStats* gc_stats);
   void update_counters_from_policy();
   inline void update_cms_capacity_counter(size_t size_in_bytes) {
     _cms_capacity_counter->set_value(size_in_bytes);
   }
   virtual GCPolicyCounters::Name kind() const {
     return GCPolicyCounters::CMSGCAdaptivePolicyCountersKind;
   }
 };

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp@c96030fff130 (annotated)

src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp