be/src/runtime/bufferpool/buffer-pool-counters.h

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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#ifndef IMPALA_RUNTIME_BUFFER_POOL_COUNTERS_H
#define IMPALA_RUNTIME_BUFFER_POOL_COUNTERS_H

#include "util/runtime-profile.h"

namespace impala {

/// A set of counters for each buffer pool client.
struct BufferPoolClientCounters {
 public:
  /// Total amount of time spent inside BufferAllocator::AllocateBuffer().
  RuntimeProfile::Counter* alloc_time;

  /// Total amount of time spent inside the system allocator (subset of 'alloc_time').
  RuntimeProfile::Counter* sys_alloc_time;

  /// Number of buffers allocated via BufferAllocator::AllocateBuffer().
  RuntimeProfile::Counter* cumulative_allocations;

  /// Bytes of buffers allocated via BufferAllocator::AllocateBuffer().
  RuntimeProfile::Counter* cumulative_bytes_alloced;

  /// Amount of time spent waiting for reads from disk to complete.
  RuntimeProfile::Counter* read_wait_time;

  /// Total number of read I/O operations issued.
  RuntimeProfile::Counter* read_io_ops;

  /// Total bytes read from disk.
  RuntimeProfile::Counter* bytes_read;

  /// Amount of time spent waiting for writes to disk to complete.
  RuntimeProfile::Counter* write_wait_time;

  /// Total number of write I/O operations issued.
  RuntimeProfile::Counter* write_io_ops;

  /// Total bytes written to disk.
  RuntimeProfile::Counter* bytes_written;

  /// The peak total size of unpinned pages.
  RuntimeProfile::HighWaterMarkCounter* peak_unpinned_bytes;
};

}

#endif