ceph/src/rocksdb/java/src/main/java/org/rocksdb/HistogramType.java

   1 // Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under both the GPLv2 (found in the
   3 //  COPYING file in the root directory) and Apache 2.0 License
   4 //  (found in the LICENSE.Apache file in the root directory).
   5
   6 package org.rocksdb;
   7
   8 public enum HistogramType {
   9
  10   DB_GET((byte) 0x0),
  11
  12   DB_WRITE((byte) 0x1),
  13
  14   COMPACTION_TIME((byte) 0x2),
  15
  16   SUBCOMPACTION_SETUP_TIME((byte) 0x3),
  17
  18   TABLE_SYNC_MICROS((byte) 0x4),
  19
  20   COMPACTION_OUTFILE_SYNC_MICROS((byte) 0x5),
  21
  22   WAL_FILE_SYNC_MICROS((byte) 0x6),
  23
  24   MANIFEST_FILE_SYNC_MICROS((byte) 0x7),
  25
  26   /**
  27    * TIME SPENT IN IO DURING TABLE OPEN.
  28    */
  29   TABLE_OPEN_IO_MICROS((byte) 0x8),
  30
  31   DB_MULTIGET((byte) 0x9),
  32
  33   READ_BLOCK_COMPACTION_MICROS((byte) 0xA),
  34
  35   READ_BLOCK_GET_MICROS((byte) 0xB),
  36
  37   WRITE_RAW_BLOCK_MICROS((byte) 0xC),
  38
  39   STALL_L0_SLOWDOWN_COUNT((byte) 0xD),
  40
  41   STALL_MEMTABLE_COMPACTION_COUNT((byte) 0xE),
  42
  43   STALL_L0_NUM_FILES_COUNT((byte) 0xF),
  44
  45   HARD_RATE_LIMIT_DELAY_COUNT((byte) 0x10),
  46
  47   SOFT_RATE_LIMIT_DELAY_COUNT((byte) 0x11),
  48
  49   NUM_FILES_IN_SINGLE_COMPACTION((byte) 0x12),
  50
  51   DB_SEEK((byte) 0x13),
  52
  53   WRITE_STALL((byte) 0x14),
  54
  55   SST_READ_MICROS((byte) 0x15),
  56
  57   /**
  58    * The number of subcompactions actually scheduled during a compaction.
  59    */
  60   NUM_SUBCOMPACTIONS_SCHEDULED((byte) 0x16),
  61
  62   /**
  63    * Value size distribution in each operation.
  64    */
  65   BYTES_PER_READ((byte) 0x17),
  66   BYTES_PER_WRITE((byte) 0x18),
  67   BYTES_PER_MULTIGET((byte) 0x19),
  68
  69   /**
  70    * number of bytes compressed.
  71    */
  72   BYTES_COMPRESSED((byte) 0x1A),
  73
  74   /**
  75    * number of bytes decompressed.
  76    *
  77    * number of bytes is when uncompressed; i.e. before/after respectively
  78    */
  79   BYTES_DECOMPRESSED((byte) 0x1B),
  80
  81   COMPRESSION_TIMES_NANOS((byte) 0x1C),
  82
  83   DECOMPRESSION_TIMES_NANOS((byte) 0x1D),
  84
  85   READ_NUM_MERGE_OPERANDS((byte) 0x1E),
  86
  87   HISTOGRAM_ENUM_MAX((byte) 0x1F);
  88
  89   private final byte value;
  90
  91   HistogramType(final byte value) {
  92     this.value = value;
  93   }
  94
  95   public byte getValue() {
  96     return value;
  97   }
  98 }