| // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. |
| // This source code is licensed under both the GPLv2 (found in the |
| // COPYING file in the root directory) and Apache 2.0 License |
| // (found in the LICENSE.Apache file in the root directory). |
| |
| package org.rocksdb; |
| |
| public enum HistogramType { |
| |
| DB_GET((byte) 0x0), |
| |
| DB_WRITE((byte) 0x1), |
| |
| COMPACTION_TIME((byte) 0x2), |
| |
| SUBCOMPACTION_SETUP_TIME((byte) 0x3), |
| |
| TABLE_SYNC_MICROS((byte) 0x4), |
| |
| COMPACTION_OUTFILE_SYNC_MICROS((byte) 0x5), |
| |
| WAL_FILE_SYNC_MICROS((byte) 0x6), |
| |
| MANIFEST_FILE_SYNC_MICROS((byte) 0x7), |
| |
| /** |
| * TIME SPENT IN IO DURING TABLE OPEN. |
| */ |
| TABLE_OPEN_IO_MICROS((byte) 0x8), |
| |
| DB_MULTIGET((byte) 0x9), |
| |
| READ_BLOCK_COMPACTION_MICROS((byte) 0xA), |
| |
| READ_BLOCK_GET_MICROS((byte) 0xB), |
| |
| WRITE_RAW_BLOCK_MICROS((byte) 0xC), |
| |
| STALL_L0_SLOWDOWN_COUNT((byte) 0xD), |
| |
| STALL_MEMTABLE_COMPACTION_COUNT((byte) 0xE), |
| |
| STALL_L0_NUM_FILES_COUNT((byte) 0xF), |
| |
| HARD_RATE_LIMIT_DELAY_COUNT((byte) 0x10), |
| |
| SOFT_RATE_LIMIT_DELAY_COUNT((byte) 0x11), |
| |
| NUM_FILES_IN_SINGLE_COMPACTION((byte) 0x12), |
| |
| DB_SEEK((byte) 0x13), |
| |
| WRITE_STALL((byte) 0x14), |
| |
| SST_READ_MICROS((byte) 0x15), |
| |
| /** |
| * The number of subcompactions actually scheduled during a compaction. |
| */ |
| NUM_SUBCOMPACTIONS_SCHEDULED((byte) 0x16), |
| |
| /** |
| * Value size distribution in each operation. |
| */ |
| BYTES_PER_READ((byte) 0x17), |
| BYTES_PER_WRITE((byte) 0x18), |
| BYTES_PER_MULTIGET((byte) 0x19), |
| |
| /** |
| * number of bytes compressed. |
| */ |
| BYTES_COMPRESSED((byte) 0x1A), |
| |
| /** |
| * number of bytes decompressed. |
| * |
| * number of bytes is when uncompressed; i.e. before/after respectively |
| */ |
| BYTES_DECOMPRESSED((byte) 0x1B), |
| |
| COMPRESSION_TIMES_NANOS((byte) 0x1C), |
| |
| DECOMPRESSION_TIMES_NANOS((byte) 0x1D), |
| |
| READ_NUM_MERGE_OPERANDS((byte) 0x1E), |
| |
| HISTOGRAM_ENUM_MAX((byte) 0x1F); |
| |
| private final byte value; |
| |
| HistogramType(final byte value) { |
| this.value = value; |
| } |
| |
| public byte getValue() { |
| return value; |
| } |
| } |