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- // Copyright 2015 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "components/metrics/system_memory_stats_recorder.h"
- #include "base/metrics/histogram_macros.h"
- #include "base/process/process_metrics.h"
- #include "build/build_config.h"
- namespace metrics {
- // Record a size in megabytes, a potential interval from 250MB up to 32 GB.
- #define UMA_HISTOGRAM_ALLOCATED_MEGABYTES(name, sample) \
- UMA_HISTOGRAM_CUSTOM_COUNTS(name, sample, 250, 32768, 50)
- // Records a statistics |sample| for UMA histogram |name|
- // using a linear distribution of buckets.
- #define UMA_HISTOGRAM_LINEAR(name, sample, max, buckets) \
- STATIC_HISTOGRAM_POINTER_BLOCK( \
- name, Add(sample), \
- base::LinearHistogram::FactoryGet( \
- name, \
- 1, /* Minimum. The 0 bin for underflow is automatically added. */ \
- max + 1, /* Ensure bucket size of |maximum| / |bucket_count|. */ \
- buckets + 2, /* Account for the underflow and overflow bins. */ \
- base::Histogram::kUmaTargetedHistogramFlag))
- #define UMA_HISTOGRAM_MEGABYTES_LINEAR(name, sample) \
- UMA_HISTOGRAM_LINEAR(name, sample, 2500, 50)
- void RecordMemoryStats(RecordMemoryStatsType type) {
- #if BUILDFLAG(IS_CHROMEOS)
- // Record graphics GEM object size in a histogram with 50 MB buckets.
- int mem_gpu_mb = 0;
- bool mem_gpu_result = false;
- base::GraphicsMemoryInfoKB gpu_memory;
- mem_gpu_result = base::GetGraphicsMemoryInfo(&gpu_memory);
- if (mem_gpu_result) {
- mem_gpu_mb = gpu_memory.gpu_memory_size / 1024 / 1024;
- switch (type) {
- case RECORD_MEMORY_STATS_CONTENTS_OOM_KILLED:
- UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Contents.MemGraphicsMB",
- mem_gpu_mb);
- break;
- case RECORD_MEMORY_STATS_EXTENSIONS_OOM_KILLED:
- UMA_HISTOGRAM_MEGABYTES_LINEAR(
- "Memory.OOMKill.Extensions.MemGraphicsMB", mem_gpu_mb);
- break;
- }
- }
- #endif
- base::SystemMemoryInfoKB memory;
- if (base::GetSystemMemoryInfo(&memory)) {
- // On Intel, graphics objects are in anonymous pages, but on ARM they are
- // not. For a total "allocated count" add in graphics pages on ARM.
- int mem_allocated_mb = (memory.active_anon + memory.inactive_anon) / 1024;
- #if BUILDFLAG(IS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
- mem_allocated_mb += mem_gpu_mb;
- #endif
- int mem_available_mb =
- (memory.active_file + memory.inactive_file + memory.free) / 1024;
- switch (type) {
- case RECORD_MEMORY_STATS_CONTENTS_OOM_KILLED: {
- UMA_HISTOGRAM_ALLOCATED_MEGABYTES(
- "Memory.OOMKill.Contents.MemAllocatedMB", mem_allocated_mb);
- UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.OOMKill.Contents.MemAvailableMB",
- mem_available_mb);
- break;
- }
- case RECORD_MEMORY_STATS_EXTENSIONS_OOM_KILLED: {
- UMA_HISTOGRAM_ALLOCATED_MEGABYTES(
- "Memory.OOMKill.Extensions.MemAllocatedMB", mem_allocated_mb);
- UMA_HISTOGRAM_LARGE_MEMORY_MB(
- "Memory.OOMKill.Extensions.MemAvailableMB", mem_available_mb);
- break;
- }
- }
- #if BUILDFLAG(IS_CHROMEOS)
- // Record shared memory (used by renderer/GPU buffers).
- int mem_shmem_mb = memory.shmem / 1024;
- switch (type) {
- case RECORD_MEMORY_STATS_CONTENTS_OOM_KILLED:
- UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Contents.MemShmemMB",
- mem_shmem_mb);
- break;
- case RECORD_MEMORY_STATS_EXTENSIONS_OOM_KILLED:
- UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Extensions.MemShmemMB",
- mem_shmem_mb);
- break;
- }
- #endif
- }
- }
- } // namespace metrics
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