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doris/be/src/runtime/memory/mem_tracker_limiter.cpp
Xinyi Zou 96f42ca20a [fix](memory) Independent count exec node memory profile (#22598) 
Independent count exec node memory profile, after #22582
2023-08-06 10:56:31 +08:00

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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "runtime/memory/mem_tracker_limiter.h"
#include <fmt/format.h>
#include <gen_cpp/types.pb.h>
#include <stdlib.h>
#include <functional>
#include <mutex>
#include <queue>
#include <utility>
#include "bvar/bvar.h"
#include "olap/memtable_memory_limiter.h"
#include "runtime/exec_env.h"
#include "runtime/fragment_mgr.h"
#include "runtime/task_group/task_group.h"
#include "service/backend_options.h"
#include "util/mem_info.h"
#include "util/perf_counters.h"
#include "util/pretty_printer.h"
#include "util/runtime_profile.h"
namespace doris {
bvar::Adder<int64_t> g_memtrackerlimiter_cnt("memtrackerlimiter_cnt");
// Save all MemTrackerLimiters in use.
// Each group corresponds to several MemTrackerLimiters and has a lock.
// Multiple groups are used to reduce the impact of locks.
std::vector<MemTrackerLimiter::TrackerLimiterGroup> MemTrackerLimiter::mem_tracker_limiter_pool(
MEM_TRACKER_GROUP_NUM);
std::atomic<bool> MemTrackerLimiter::_enable_print_log_process_usage {true};
// Reset before each free
static std::unique_ptr<RuntimeProfile> free_top_memory_task_profile {
std::make_unique<RuntimeProfile>("-")};
static RuntimeProfile::Counter* find_cost_time =
ADD_TIMER(free_top_memory_task_profile, "FindCostTime");
static RuntimeProfile::Counter* cancel_cost_time =
ADD_TIMER(free_top_memory_task_profile, "CancelCostTime");
static RuntimeProfile::Counter* freed_memory_counter =
ADD_COUNTER(free_top_memory_task_profile, "FreedMemory", TUnit::BYTES);
static RuntimeProfile::Counter* cancel_tasks_counter =
ADD_COUNTER(free_top_memory_task_profile, "CancelTasksNum", TUnit::UNIT);
MemTrackerLimiter::MemTrackerLimiter(Type type, const std::string& label, int64_t byte_limit) {
DCHECK_GE(byte_limit, -1);
_consumption = std::make_shared<MemCounter>();
_type = type;
_label = label;
_limit = byte_limit;
if (_type == Type::GLOBAL) {
_group_num = 0;
} else {
_group_num = random() % 999 + 1;
}
{
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[_group_num].group_lock);
_tracker_limiter_group_it = mem_tracker_limiter_pool[_group_num].trackers.insert(
mem_tracker_limiter_pool[_group_num].trackers.end(), this);
}
g_memtrackerlimiter_cnt << 1;
}
MemTrackerLimiter::~MemTrackerLimiter() {
if (_type == Type::GLOBAL) return;
consume(_untracked_mem);
// mem hook record tracker cannot guarantee that the final consumption is 0,
// nor can it guarantee that the memory alloc and free are recorded in a one-to-one correspondence.
// In order to ensure `consumption of all limiter trackers` + `orphan tracker consumption` = `process tracker consumption`
// in real time. Merge its consumption into orphan when parent is process, to avoid repetition.
ExecEnv::GetInstance()->orphan_mem_tracker()->consume(_consumption->current_value());
_consumption->set(0);
{
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[_group_num].group_lock);
if (_tracker_limiter_group_it != mem_tracker_limiter_pool[_group_num].trackers.end()) {
mem_tracker_limiter_pool[_group_num].trackers.erase(_tracker_limiter_group_it);
_tracker_limiter_group_it = mem_tracker_limiter_pool[_group_num].trackers.end();
}
}
g_memtrackerlimiter_cnt << -1;
}
MemTracker::Snapshot MemTrackerLimiter::make_snapshot() const {
Snapshot snapshot;
snapshot.type = type_string(_type);
snapshot.label = _label;
snapshot.limit = _limit;
snapshot.cur_consumption = _consumption->current_value();
snapshot.peak_consumption = _consumption->peak_value();
return snapshot;
}
void MemTrackerLimiter::refresh_global_counter() {
std::unordered_map<Type, int64_t> type_mem_sum = {
{Type::GLOBAL, 0}, {Type::QUERY, 0}, {Type::LOAD, 0}, {Type::COMPACTION, 0},
{Type::SCHEMA_CHANGE, 0}, {Type::CLONE, 0}}; // No need refresh Type::EXPERIMENTAL
for (unsigned i = 0; i < mem_tracker_limiter_pool.size(); ++i) {
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[i].group_lock);
for (auto tracker : mem_tracker_limiter_pool[i].trackers) {
type_mem_sum[tracker->type()] += tracker->consumption();
}
}
for (auto it : type_mem_sum) {
MemTrackerLimiter::TypeMemSum[it.first]->set(it.second);
}
}
void MemTrackerLimiter::make_process_snapshots(std::vector<MemTracker::Snapshot>* snapshots) {
MemTrackerLimiter::refresh_global_counter();
int64_t process_mem_sum = 0;
Snapshot snapshot;
for (auto it : MemTrackerLimiter::TypeMemSum) {
snapshot.type = type_string(it.first);
snapshot.label = "";
snapshot.limit = -1;
snapshot.cur_consumption = it.second->current_value();
snapshot.peak_consumption = it.second->peak_value();
(*snapshots).emplace_back(snapshot);
process_mem_sum += it.second->current_value();
}
snapshot.type = "tc/jemalloc_free_memory";
snapshot.label = "";
snapshot.limit = -1;
snapshot.cur_consumption = MemInfo::allocator_cache_mem();
snapshot.peak_consumption = -1;
(*snapshots).emplace_back(snapshot);
process_mem_sum += MemInfo::allocator_cache_mem();
snapshot.type = "process";
snapshot.label = "";
snapshot.limit = -1;
snapshot.cur_consumption = process_mem_sum;
snapshot.peak_consumption = -1;
(*snapshots).emplace_back(snapshot);
}
void MemTrackerLimiter::make_type_snapshots(std::vector<MemTracker::Snapshot>* snapshots,
MemTrackerLimiter::Type type) {
if (type == Type::GLOBAL) {
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[0].group_lock);
for (auto tracker : mem_tracker_limiter_pool[0].trackers) {
(*snapshots).emplace_back(tracker->make_snapshot());
MemTracker::make_group_snapshot(snapshots, tracker->group_num(), tracker->label());
}
} else {
for (unsigned i = 1; i < mem_tracker_limiter_pool.size(); ++i) {
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[i].group_lock);
for (auto tracker : mem_tracker_limiter_pool[i].trackers) {
if (tracker->type() == type) {
(*snapshots).emplace_back(tracker->make_snapshot());
MemTracker::make_group_snapshot(snapshots, tracker->group_num(),
tracker->label());
}
}
}
}
}
std::string MemTrackerLimiter::log_usage(MemTracker::Snapshot snapshot) {
return fmt::format(
"MemTrackerLimiter Label={}, Type={}, Limit={}({} B), Used={}({} B), Peak={}({} B)",
snapshot.label, snapshot.type, print_bytes(snapshot.limit), snapshot.limit,
print_bytes(snapshot.cur_consumption), snapshot.cur_consumption,
print_bytes(snapshot.peak_consumption), snapshot.peak_consumption);
}
std::string MemTrackerLimiter::type_log_usage(MemTracker::Snapshot snapshot) {
return fmt::format("Type={}, Used={}({} B), Peak={}({} B)", snapshot.type,
print_bytes(snapshot.cur_consumption), snapshot.cur_consumption,
print_bytes(snapshot.peak_consumption), snapshot.peak_consumption);
}
std::string MemTrackerLimiter::type_detail_usage(const std::string& msg, Type type) {
std::string detail = fmt::format("{}, Type:{}, Memory Tracker Summary", msg, type_string(type));
for (unsigned i = 1; i < mem_tracker_limiter_pool.size(); ++i) {
std::lock_guard<std::mutex> l(mem_tracker_limiter_pool[i].group_lock);
for (auto tracker : mem_tracker_limiter_pool[i].trackers) {
if (tracker->type() == type) {
detail += "\n " + MemTrackerLimiter::log_usage(tracker->make_snapshot());
}
}
}
return detail;
}
void MemTrackerLimiter::print_log_usage(const std::string& msg) {
if (_enable_print_log_usage) {
_enable_print_log_usage = false;
std::string detail = msg;
detail += "\nProcess Memory Summary:\n " + MemTrackerLimiter::process_mem_log_str();
detail += "\nMemory Tracker Summary: " + log_usage();
std::string child_trackers_usage;
std::vector<MemTracker::Snapshot> snapshots;
MemTracker::make_group_snapshot(&snapshots, _group_num, _label);
for (const auto& snapshot : snapshots) {
child_trackers_usage += "\n " + MemTracker::log_usage(snapshot);
}
if (!child_trackers_usage.empty()) detail += child_trackers_usage;
LOG(WARNING) << detail;
}
}
std::string MemTrackerLimiter::log_process_usage_str() {
std::string detail;
detail += "\nProcess Memory Summary:\n " + MemTrackerLimiter::process_mem_log_str();
std::vector<MemTracker::Snapshot> snapshots;
MemTrackerLimiter::make_process_snapshots(&snapshots);
MemTrackerLimiter::make_type_snapshots(&snapshots, MemTrackerLimiter::Type::GLOBAL);
// Add additional tracker printed when memory exceeds limit.
snapshots.emplace_back(
ExecEnv::GetInstance()->memtable_memory_limiter()->mem_tracker()->make_snapshot());
detail += "\nMemory Tracker Summary:";
for (const auto& snapshot : snapshots) {
if (snapshot.label == "" && snapshot.parent_label == "") {
detail += "\n " + MemTrackerLimiter::type_log_usage(snapshot);
} else if (snapshot.parent_label == "") {
detail += "\n " + MemTrackerLimiter::log_usage(snapshot);
} else {
detail += "\n " + MemTracker::log_usage(snapshot);
}
}
return detail;
}
void MemTrackerLimiter::print_log_process_usage() {
// The default interval between two prints is 100ms (config::memory_maintenance_sleep_time_ms).
if (MemTrackerLimiter::_enable_print_log_process_usage) {
MemTrackerLimiter::_enable_print_log_process_usage = false;
LOG(WARNING) << log_process_usage_str();
}
}
bool MemTrackerLimiter::sys_mem_exceed_limit_check(int64_t bytes) {
// Limit process memory usage using the actual physical memory of the process in `/proc/self/status`.
// This is independent of the consumption value of the mem tracker, which counts the virtual memory
// of the process malloc.
// for fast, expect MemInfo::initialized() to be true.
//
// tcmalloc/jemalloc allocator cache does not participate in the mem check as part of the process physical memory.
// because `new/malloc` will trigger mem hook when using tcmalloc/jemalloc allocator cache,
// but it may not actually alloc physical memory, which is not expected in mem hook fail.
if (MemInfo::proc_mem_no_allocator_cache() + bytes >= MemInfo::mem_limit() ||
MemInfo::sys_mem_available() < MemInfo::sys_mem_available_low_water_mark()) {
return true;
}
return false;
}
std::string MemTrackerLimiter::process_mem_log_str() {
return fmt::format(
"OS physical memory {}. Process memory usage {}, limit {}, soft limit {}. Sys "
"available memory {}, low water mark {}, warning water mark {}. Refresh interval "
"memory growth {} B",
PrettyPrinter::print(MemInfo::physical_mem(), TUnit::BYTES),
PerfCounters::get_vm_rss_str(), MemInfo::mem_limit_str(), MemInfo::soft_mem_limit_str(),
MemInfo::sys_mem_available_str(),
PrettyPrinter::print(MemInfo::sys_mem_available_low_water_mark(), TUnit::BYTES),
PrettyPrinter::print(MemInfo::sys_mem_available_warning_water_mark(), TUnit::BYTES),
MemInfo::refresh_interval_memory_growth);
}
std::string MemTrackerLimiter::process_limit_exceeded_errmsg_str() {
return fmt::format(
"process memory used {} exceed limit {} or sys mem available {} less than low "
"water mark {}",
PerfCounters::get_vm_rss_str(), MemInfo::mem_limit_str(),
MemInfo::sys_mem_available_str(),
PrettyPrinter::print(MemInfo::sys_mem_available_low_water_mark(), TUnit::BYTES));
}
std::string MemTrackerLimiter::process_soft_limit_exceeded_errmsg_str() {
return fmt::format(
"process memory used {} exceed soft limit {} or sys mem available {} less than warning "
"water mark {}.",
PerfCounters::get_vm_rss_str(), MemInfo::soft_mem_limit_str(),
MemInfo::sys_mem_available_str(),
PrettyPrinter::print(MemInfo::sys_mem_available_warning_water_mark(), TUnit::BYTES));
}
std::string MemTrackerLimiter::query_tracker_limit_exceeded_str(
const std::string& tracker_limit_exceeded, const std::string& last_consumer_tracker,
const std::string& executing_msg) {
return fmt::format(
"Memory limit exceeded:{}, exec node:<{}>, execute msg:{}. backend {} "
"process memory used {}, limit {}. Can `set "
"exec_mem_limit=8G` to change limit, details see be.INFO.",
tracker_limit_exceeded, last_consumer_tracker, executing_msg,
BackendOptions::get_localhost(), PerfCounters::get_vm_rss_str(),
MemInfo::mem_limit_str());
}
std::string MemTrackerLimiter::tracker_limit_exceeded_str() {
return fmt::format(
"exceeded tracker:<{}>, limit {}, peak "
"used {}, current used {}",
label(), print_bytes(limit()), print_bytes(_consumption->peak_value()),
print_bytes(_consumption->current_value()));
}
std::string MemTrackerLimiter::tracker_limit_exceeded_str(int64_t bytes) {
return fmt::format("failed alloc size {}, {}", print_bytes(bytes),
tracker_limit_exceeded_str());
}
int64_t MemTrackerLimiter::free_top_memory_query(int64_t min_free_mem,
const std::string& vm_rss_str,
const std::string& mem_available_str,
RuntimeProfile* profile, Type type) {
return free_top_memory_query(
min_free_mem, type, mem_tracker_limiter_pool,
[&vm_rss_str, &mem_available_str, &type](int64_t mem_consumption,
const std::string& label) {
return fmt::format(
"Process has no memory available, cancel top memory usage {}: "
"{} memory tracker <{}> consumption {}, backend {} "
"process memory used {} exceed limit {} or sys mem available {} "
"less than low water mark {}. Execute again after enough memory, "
"details see be.INFO.",
type_string(type), type_string(type), label, print_bytes(mem_consumption),
BackendOptions::get_localhost(), vm_rss_str, MemInfo::mem_limit_str(),
mem_available_str,
print_bytes(MemInfo::sys_mem_available_low_water_mark()));
},
profile);
}
template <typename TrackerGroups>
int64_t MemTrackerLimiter::free_top_memory_query(
int64_t min_free_mem, Type type, std::vector<TrackerGroups>& tracker_groups,
const std::function<std::string(int64_t, const std::string&)>& cancel_msg,
RuntimeProfile* profile) {
using MemTrackerMinQueue = std::priority_queue<std::pair<int64_t, std::string>,
std::vector<std::pair<int64_t, std::string>>,
std::greater<std::pair<int64_t, std::string>>>;
MemTrackerMinQueue min_pq;
// After greater than min_free_mem, will not be modified.
int64_t prepare_free_mem = 0;
std::vector<std::string> canceling_task;
COUNTER_SET(cancel_cost_time, (int64_t)0);
COUNTER_SET(find_cost_time, (int64_t)0);
COUNTER_SET(freed_memory_counter, (int64_t)0);
COUNTER_SET(cancel_tasks_counter, (int64_t)0);
auto cancel_top_query = [&cancel_msg, type, profile](auto& min_pq,
auto& canceling_task) -> int64_t {
std::vector<std::string> usage_strings;
{
SCOPED_TIMER(cancel_cost_time);
while (!min_pq.empty()) {
TUniqueId cancelled_queryid = label_to_queryid(min_pq.top().second);
if (cancelled_queryid == TUniqueId()) {
min_pq.pop();
continue;
}
ExecEnv::GetInstance()->fragment_mgr()->cancel_query(
cancelled_queryid, PPlanFragmentCancelReason::MEMORY_LIMIT_EXCEED,
cancel_msg(min_pq.top().first, min_pq.top().second));
COUNTER_UPDATE(freed_memory_counter, min_pq.top().first);
COUNTER_UPDATE(cancel_tasks_counter, 1);
usage_strings.push_back(fmt::format("{} memory usage {} Bytes", min_pq.top().second,
min_pq.top().first));
min_pq.pop();
}
}
profile->merge(free_top_memory_task_profile.get());
LOG(INFO) << "Process GC Free Top Memory Usage " << type_string(type) << ": "
<< join(usage_strings, ",")
<< ". previous canceling task: " << join(canceling_task, ",");
return freed_memory_counter->value();
};
{
SCOPED_TIMER(find_cost_time);
for (unsigned i = 1; i < tracker_groups.size(); ++i) {
std::lock_guard<std::mutex> l(tracker_groups[i].group_lock);
for (auto tracker : tracker_groups[i].trackers) {
if (tracker->type() == type) {
if (tracker->is_query_cancelled()) {
canceling_task.push_back(fmt::format("{}:{} Bytes", tracker->label(),
tracker->consumption()));
continue;
}
if (tracker->consumption() > min_free_mem) {
MemTrackerMinQueue min_pq_single;
min_pq_single.emplace(tracker->consumption(), tracker->label());
return cancel_top_query(min_pq_single, canceling_task);
} else if (tracker->consumption() + prepare_free_mem < min_free_mem) {
min_pq.emplace(tracker->consumption(), tracker->label());
prepare_free_mem += tracker->consumption();
} else if (tracker->consumption() > min_pq.top().first) {
min_pq.emplace(tracker->consumption(), tracker->label());
prepare_free_mem += tracker->consumption();
while (prepare_free_mem - min_pq.top().first > min_free_mem) {
prepare_free_mem -= min_pq.top().first;
min_pq.pop();
}
}
}
}
}
}
return cancel_top_query(min_pq, canceling_task);
}
int64_t MemTrackerLimiter::free_top_overcommit_query(int64_t min_free_mem,
const std::string& vm_rss_str,
const std::string& mem_available_str,
RuntimeProfile* profile, Type type) {
return free_top_overcommit_query(
min_free_mem, type, mem_tracker_limiter_pool,
[&vm_rss_str, &mem_available_str, &type](int64_t mem_consumption,
const std::string& label) {
return fmt::format(
"Process has less memory, cancel top memory overcommit {}: "
"{} memory tracker <{}> consumption {}, backend {} "
"process memory used {} exceed soft limit {} or sys mem available {} "
"less than warning water mark {}. Execute again after enough memory, "
"details see be.INFO.",
type_string(type), type_string(type), label, print_bytes(mem_consumption),
BackendOptions::get_localhost(), vm_rss_str, MemInfo::soft_mem_limit_str(),
mem_available_str,
print_bytes(MemInfo::sys_mem_available_warning_water_mark()));
},
profile);
}
template <typename TrackerGroups>
int64_t MemTrackerLimiter::free_top_overcommit_query(
int64_t min_free_mem, Type type, std::vector<TrackerGroups>& tracker_groups,
const std::function<std::string(int64_t, const std::string&)>& cancel_msg,
RuntimeProfile* profile) {
std::priority_queue<std::pair<int64_t, std::string>> max_pq;
std::unordered_map<std::string, int64_t> query_consumption;
std::vector<std::string> canceling_task;
COUNTER_SET(cancel_cost_time, (int64_t)0);
COUNTER_SET(find_cost_time, (int64_t)0);
COUNTER_SET(freed_memory_counter, (int64_t)0);
COUNTER_SET(cancel_tasks_counter, (int64_t)0);
{
SCOPED_TIMER(find_cost_time);
for (unsigned i = 1; i < tracker_groups.size(); ++i) {
std::lock_guard<std::mutex> l(tracker_groups[i].group_lock);
for (auto tracker : tracker_groups[i].trackers) {
if (tracker->type() == type) {
// 32M small query does not cancel
if (tracker->consumption() <= 33554432 ||
tracker->consumption() < tracker->limit()) {
continue;
}
if (tracker->is_query_cancelled()) {
canceling_task.push_back(fmt::format("{}:{} Bytes", tracker->label(),
tracker->consumption()));
continue;
}
int64_t overcommit_ratio =
(static_cast<double>(tracker->consumption()) / tracker->limit()) *
10000;
max_pq.emplace(overcommit_ratio, tracker->label());
query_consumption[tracker->label()] = tracker->consumption();
}
}
}
}
// Minor gc does not cancel when there is only one query.
if (query_consumption.size() <= 1) {
return 0;
}
std::vector<std::string> usage_strings;
{
SCOPED_TIMER(cancel_cost_time);
while (!max_pq.empty()) {
TUniqueId cancelled_queryid = label_to_queryid(max_pq.top().second);
if (cancelled_queryid == TUniqueId()) {
max_pq.pop();
continue;
}
int64_t query_mem = query_consumption[max_pq.top().second];
ExecEnv::GetInstance()->fragment_mgr()->cancel_query(
cancelled_queryid, PPlanFragmentCancelReason::MEMORY_LIMIT_EXCEED,
cancel_msg(query_mem, max_pq.top().second));
usage_strings.push_back(fmt::format("{} memory usage {} Bytes, overcommit ratio: {}",
max_pq.top().second, query_mem,
max_pq.top().first));
COUNTER_UPDATE(freed_memory_counter, query_mem);
COUNTER_UPDATE(cancel_tasks_counter, 1);
if (freed_memory_counter->value() > min_free_mem) {
break;
}
max_pq.pop();
}
}
profile->merge(free_top_memory_task_profile.get());
LOG(INFO) << "Process GC Free Top Memory Overcommit " << type_string(type) << ": "
<< join(usage_strings, ",")
<< ". previous canceling task: " << join(canceling_task, ",");
return freed_memory_counter->value();
}
int64_t MemTrackerLimiter::tg_memory_limit_gc(
int64_t need_free_mem, int64_t used_memory, uint64_t id, const std::string& name,
int64_t memory_limit, std::vector<taskgroup::TgTrackerLimiterGroup>& tracker_limiter_groups,
RuntimeProfile* profile) {
if (need_free_mem <= 0) {
return 0;
}
int64_t freed_mem = 0;
constexpr auto query_type = MemTrackerLimiter::Type::QUERY;
auto cancel_str = [id, &name, memory_limit, used_memory](int64_t mem_consumption,
const std::string& label) {
return fmt::format(
"Resource group id:{}, name:{} memory exceeded limit, cancel top memory {}: "
"memory tracker <{}> consumption {}, backend {}, "
"resource group memory used {}, memory limit {}.",
id, name, MemTrackerLimiter::type_string(query_type), label,
MemTracker::print_bytes(mem_consumption), BackendOptions::get_localhost(),
MemTracker::print_bytes(used_memory), MemTracker::print_bytes(memory_limit));
};
if (config::enable_query_memory_overcommit) {
freed_mem += MemTrackerLimiter::free_top_overcommit_query(
need_free_mem - freed_mem, query_type, tracker_limiter_groups, cancel_str, profile);
}
if (freed_mem < need_free_mem) {
freed_mem += MemTrackerLimiter::free_top_memory_query(
need_free_mem - freed_mem, query_type, tracker_limiter_groups, cancel_str, profile);
}
LOG(INFO) << fmt::format(
"task group {} finished gc, memory_limit: {}, used_memory: {}, freed_mem: {}.", name,
memory_limit, used_memory, freed_mem);
return freed_mem;
}
} // namespace doris
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