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kvtimings

    +
    Provides low-level timings from the underlying KV storage system.

    Syntax

    Request syntax:

    cbstats [hostname]:11210 kvtimings

    Description

    This command is useful to understand various states of the storage system.

    Table 1. Couchstore database engine stats
    Stat Description

    backend_type

    Type of backend database engine

    close

    Number of database close operations.

    failure_get

    Number of failed get operations.

    failure_open

    Number of failed open operations.

    failure_set

    Number of failed set operations.

    failure_vbset

    Number of failed vbucket set operation

    lastCommDocs

    Number of docs in the last commit.

    numLoadedVb

    Number of Vbuckets loaded into memory.

    open

    Number of database open operations.

    Options

    None

    Example

    Request

    cbstats 10.5.2.54:11210 kvtimings

    Sample histogram

     rw_3:commit (50457 total)
        1ms - 2ms     : (  0.34%)   173
        2ms - 4ms     : ( 10.52%)  5136 ##############
        4ms - 8ms     : ( 67.06%) 28528 ##############################################################################
        8ms - 16ms    : ( 97.09%) 15152 #########################################
        16ms - 32ms   : ( 99.93%)  1432 ###
        32ms - 65ms   : ( 99.98%)    27
        65ms - 131ms  : ( 99.99%)     6
        131ms - 262ms : (100.00%)     1
        262ms - 524ms : (100.00%)     2
        Avg           : (    5ms)