cockroach workload

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CockroachDB comes with built-in load generators for simulating different types of client workloads, printing per-operation statistics and totals after a specific duration or max number of operations. To run one of these load generators, use the cockroach workload command as described below.

Warning:

The cockroach workload command is experimental. The interface and output are subject to change.

Synopsis

Create the schema for a workload:

$ cockroach workload init <workload> <flags> '<connection string>'

Run a workload:

$ cockroach workload run <workload> <flags> '<connection string>'

View help:

$ cockroach workload --help

$ cockroach workload init --help

$ cockroach workload init <workload> --help

$ cockroach workload run --help

$ cockroach workload run <workload> --help

Subcommands

Command Usage
init Load the schema for the workload. You run this command once for a given schema.
run Run a workload. You can run this command multiple times from different machines to increase concurrency. See Concurrency for more details.

Concurrency

There are two ways to increase the concurrency of a workload:

  • Increase the concurrency of a single workload instance by running cockroach workload run <workload> with the --concurrency flag set to a value higher than the default. Note that not all workloads support this flag.
  • Run multiple instances of a workload in parallel by running cockroach workload run <workload> multiple times from different terminals/machines.

Workloads

Workload Description
bank Models a set of accounts with currency balances.

For this workload, you run workload init to load the schema and then workload run to generate data.
intro Loads an intro database, with one table, mytable, with a hidden message.

For this workload, you run only workload init to load the data. The workload run subcommand is not applicable.
kv Reads and writes to keys spread (by default, uniformly at random) across the cluster.

For this workload, you run workload init to load the schema and then workload run to generate data.
movr Simulates a workload for the MovR example application.

For this workload, you run workload init to load the schema and then workload run to generate data.
startrek Loads a startrek database, with two tables, episodes and quotes.

For this workload, you run only workload init to load the data. The workload run subcommand is not applicable.
tpcc Simulates a transaction processing workload using a rich schema of multiple tables.

For this workload, you run workload init to load the schema and then workload run to generate data.
ycsb Simulates a high-scale key value workload, either read-heavy, write-heavy, or scan-based, with additional customizations.

For this workload, you run workload init to load the schema and then workload run to generate data.
Note:

New in v20.1: cockroach workload sets the application_name for its workload queries to the name of the workload that is used. You can filter queries on application_name on the Statements page of the Admin UI, or in a SHOW QUERIES statement.

Flags

Note:

The cockroach workload command does not support connection or security flags like other cockroach commands. Instead, you must use a connection string at the end of the command.

bank workload

Flag Description
--concurrency The number of concurrent workers.

Applicable commands: init or run
Default: 2 * number of CPUs
--db The SQL database to use.

Applicable commands: init or run
Default: bank
--display-every The frequency for printing per-operation statistics. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1s
--display-format The format for printing per-operation statistics (simple, incremental-json). When using incremental-json, note that totals are not printed at the end of the workload's duration.

Applicable command: run
Default: simple
--drop Drop the existing database, if it exists.

Applicable commands: init or run. For the run command, this flag must be used in conjunction with --init.
--duration The duration to run, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable commands: init or run
Default: 0, which means run forever.
--histograms The file to write per-op incremental and cumulative histogram data to.

Applicable command: run
--init Deprecated. Use the init command instead.

Applicable command: run
--max-ops The maximum number of operations to run.

Applicable command: run
--max-rate The maximum frequency of operations (reads/writes).

Applicable command: run
Default: 0, which means unlimited.
--payload-bytes The size of the payload field in each initial row.

Applicable commands: init or run
Default: 100
--ramp The duration over which to ramp up load.

Applicable command: run
--ranges The initial number of ranges in the bank table.

Applicable commands: init or run
Default: 10
--rows The initial number of accounts in the bank table.

Applicable commands: init or run
Default: 1000
--seed The key hash seed.

Applicable commands: init or run
Default: 1
--tolerate-errors Keep running on error.

Applicable command: run

intro and startrek workloads

Note:

These workloads generate data but do not offer the ability to run continuous load. Thus, only the init subcommand is supported.

Flag Description
--drop Drop the existing database, if it exists, before loading the dataset.

kv workload

Flag Description
--batch The number of blocks to insert in a single SQL statement.

Applicable commands: init or run
Default: 1
--concurrency The number of concurrent workers.

Applicable commands: init or run
Default: 8 --cycle-length
--db The SQL database to use.

Applicable commands: init or run
Default: kv
--display-every The frequency for printing per-operation statistics. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1s
--display-format The format for printing per-operation statistics (simple, incremental-json). When using incremental-json, note that totals are not printed at the end of the workload's duration.

Applicable command: run
Default: simple
--drop Drop the existing database, if it exists.

Applicable commands: init or run
--duration The duration to run, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 0, which means run forever.
--histograms The file to write per-op incremental and cumulative histogram data to.

Applicable command: run
--init Deprecated. Use the init command instead.

Applicable command: run
--max-block-bytes The maximum amount of raw data written with each insertion.

Applicable commands: init or run
Default: 2
--max-ops The maximum number of operations to run.

Applicable command: run
--max-rate The maximum frequency of operations (reads/writes).

Applicable command: run
Default: 0, which means unlimited.
--min-block-bytes The minimum amount of raw data written with each insertion.

Applicable commands: init or run
Default: 1
--ramp The duration over which to ramp up load.

Applicable command: run
--read-percent The percent (0-100) of operations that are reads of existing keys.

Applicable commands: init or run
--seed The key hash seed.

Applicable commands: init or run
Default: 1
--sequential Pick keys sequentially instead of randomly.

Applicable commands: init or run
--splits The number of splits to perform before starting normal operations.

Applicable commands: init or run
--tolerate-errors Keep running on error.

Applicable command: run
--use-opt Use cost-based optimizer.

Applicable commands: init or run
Default: true
--write-seq Initial write sequence value.

Applicable commands: init or run

movr workload

Flag Description
--data-loader How to load initial table data. Valid options are INSERT and IMPORT.

Applicable commands: init or run
Default: INSERT
--db The SQL database to use.

Applicable commands: init or run
Default: movr
--display-every The frequency for printing per-operation statistics. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1s
--display-format The format for printing per-operation statistics (simple, incremental-json). When using incremental-json, note that totals are not printed at the end of the workload's duration.

Applicable command: run
Default: simple
--drop Drop the existing database, if it exists.

Applicable commands: init or run
--duration The duration to run, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 0, which means run forever.
--histograms The file to write per-op incremental and cumulative histogram data to.

Applicable command: run
--histograms-max-latency Expected maximum latency of running a query, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1m40s
--max-ops The maximum number of operations to run.

Applicable command: run
--max-rate The maximum frequency of operations (reads/writes).

Applicable command: run
Default: 0, which means unlimited.
--method The SQL issue method (prepare, noprepare, simple).

Applicable commands: init or run
Default: prepare
--num-histories The initial number of ride location histories.

Applicable commands: init or run
Default: 1000
--num-promo-codes The initial number of promo codes.

Applicable commands: init or run
Default: 1000
--num-rides Initial number of rides.

Applicable commands: init or run
Default: 500
--num-users Initial number of users.

Applicable commands: init or run
Default: 50
--num-vehicles Initial number of vehicles.

Applicable commands: init or run
Default: 15
--ramp The duration over which to ramp up load.

Applicable command: run
--seed The random number generator seed.

Applicable commands: init or run
Default: 1
--tolerate-errors Keep running on error.

Applicable command: run

tpcc workload

Flag Description
--active-warehouses Run the load generator against a specific number of warehouses.

Applicable commands: init or run
Defaults: Value of --warehouses
--data-loader How to load initial table data. Valid options are INSERT and IMPORT.

Applicable commands: init or run
Default: INSERT
--db The SQL database to use.

Applicable commands: init or run
Default: tpcc
--display-every The frequency for printing per-operation statistics. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1s
--display-format The format for printing per-operation statistics (simple, incremental-json). When using incremental-json, note that totals are not printed at the end of the workload's duration.

Applicable command: run
Default: simple
--drop Drop the existing database, if it exists.

Applicable commands: init or run. For the run command, this flag must be used in conjunction with --init.
--duration The duration to run, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 0, which means run forever.
--fks Add foreign keys.

Applicable commands: init or run
Default: true
--histograms The file to write per-op incremental and cumulative histogram data to.

Applicable command: run
--init Deprecated. Use the init command instead.

Applicable command: run
--interleaved Use interleaved tables.

Applicable commands: init or run
--max-ops The maximum number of operations to run.

Applicable command: run
--max-rate The maximum frequency of operations (reads/writes).

Applicable command: run
Default: 0, which means unlimited.
--mix Weights for the transaction mix.

Applicable commands: init or run
Default: newOrder=10,payment=10,orderStatus=1,delivery=1,stockLevel=1, which matches the TPC-C specification.
--partition-affinity Run the load generator against a specific partition. This flag must be used in conjunction with --partitions.

Applicable commands: init or run
Default: -1
--partitions Partition tables. This flag must be used in conjunction with --split.

Applicable commands: init or run
--ramp The duration over which to ramp up load.

Applicable command: run
--scatter Scatter ranges.

Applicable commands: init or run
--seed The random number generator seed.

Applicable commands: init or run
Default: 1
--serializable Force serializable mode. CockroachDB only supports SERIALIZABLE isolation, so this flag is not necessary.

Applicable command: init
--split Split tables.

Applicable commands: init or run
--tolerate-errors Keep running on error.

Applicable command: run
--wait Run in wait mode, i.e., include think/keying sleeps.

Applicable commands: init or run
Default: true
--warehouses The number of warehouses for loading initial data, at approximately 200 MB per warehouse.

Applicable commands: init or run
Default: 1
--workers The number of concurrent workers.

Applicable commands: init or run
Default: --warehouses * 10
--zones The number of replication zones for partitioning. This number should match the number of --partitions and the zones used to start the cluster.

Applicable command: init

ycsb workload

Flag Description
--concurrency The number of concurrent workers.

Applicable commands: init or run
Default: 8
--data-loader How to load initial table data. Valid options are INSERT and IMPORT.

Applicable commands: init or run
Default: INSERT
--db The SQL database to use.

Applicable commands: init or run
Default: ycsb
--display-every The frequency for printing per-operation statistics. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 1s
--display-format The format for printing per-operation statistics (simple, incremental-json). When using incremental-json, note that totals are not printed at the end of the workload's duration.

Applicable command: run
Default: simple
--drop Drop the existing database, if it exists.

Applicable commands: init or run. For the run command, this flag must be used in conjunction with --init.
--duration The duration to run, with a required time unit suffix. Valid time units are ns, us, ms, s, m, and h.

Applicable command: run
Default: 0, which means run forever.
--families Place each column in its own column family.

Applicable commands: init or run
--histograms The file to write per-op incremental and cumulative histogram data to.

Applicable command: run
--init Deprecated. Use the init command instead.

Applicable command: run
--insert-count Number of rows to sequentially insert before beginning random number generation.

Applicable commands: init or run
Default: 10000
--json Use JSONB rather than relational data.

Applicable commands: init or run
--max-ops The maximum number of operations to run.

Applicable command: run
--max-rate The maximum frequency of operations (reads/writes).

Applicable command: run
Default: 0, which means unlimited.
--method The SQL issue method (prepare, noprepare, simple).

Applicable commands: init or run
Default: prepare
--ramp The duration over which to ramp up load.

Applicable command: run
--request-distribution Distribution for the random number generator (zipfian, uniform).

Applicable commands: init or run.
Default: zipfian
--seed The random number generator seed.

Applicable commands: init or run
Default: 1
--splits Number of splits to perform before starting normal operations.

Applicable commands: init or run
--tolerate-errors Keep running on error.

Applicable command: run
--workload The type of workload to run (A, B, C, D, or F). For details about these workloads, see YCSB Workloads.

Applicable commands: init or run
Default: B

Logging

By default, the cockroach workload command logs errors to stderr.

If you need to troubleshoot this command's behavior, you can change its logging behavior.

Examples

These examples assume that you have already started an insecure cluster locally:

icon/buttons/copy 
$ cockroach start \
--insecure \
--listen-addr=localhost

Run the bank workload

  1. Load the initial schema:

    icon/buttons/copy 
    $ cockroach workload init bank \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Run the workload for 1 minute:

    icon/buttons/copy 
    $ cockroach workload run bank \
--duration=1m \
'postgresql://root@localhost:26257?sslmode=disable'

    You'll see per-operation statistics print to standard output every second:

    _elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
      1s        0         1608.6         1702.2      4.5      7.3     12.6     65.0 transfer
      2s        0         1725.3         1713.8      4.5      7.9     13.1     19.9 transfer
      3s        0         1721.1         1716.2      4.5      7.3     11.5     21.0 transfer
      4s        0         1328.7         1619.2      5.5     10.5     17.8     39.8 transfer
      5s        0         1389.3         1573.3      5.2     11.5     16.3     23.1 transfer
      6s        0         1640.0         1584.4      5.0      7.9     12.1     16.3 transfer
      7s        0         1594.0         1585.8      5.0      7.9     10.5     15.7 transfer
      8s        0         1652.8         1594.2      4.7      7.9     11.5     29.4 transfer
      9s        0         1451.9         1578.4      5.2     10.0     15.2     26.2 transfer
     10s        0         1653.3         1585.9      5.0      7.6     10.0     18.9 transfer
...

    After the specified duration (1 minute in this case), the workload will stop and you'll see totals printed to standard output:

    _elapsed___errors_____ops(total)___ops/sec(cum)__avg(ms)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)__result
   60.0s        0          84457         1407.6      5.7      5.5     10.0     15.2    167.8

Run the kv workload

  1. Load the initial schema:

    icon/buttons/copy 
    $ cockroach workload init kv \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Run the workload for 1 minute:

    icon/buttons/copy 
    $ cockroach workload run kv \
--duration=1m \
'postgresql://root@localhost:26257?sslmode=disable'

    You'll see per-operation statistics print to standard output every second:

    _elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
      1s        0         5095.8         5123.7      1.5      2.5      3.3      7.3 write
      2s        0         4795.4         4959.6      1.6      2.8      3.5      8.9 write
      3s        0         3456.5         4458.5      2.0      4.5      7.3     24.1 write
      4s        0         2787.9         4040.8      2.4      6.3     12.6     30.4 write
      5s        0         3558.7         3944.4      2.0      4.2      6.8     11.5 write
      6s        0         3733.8         3909.3      1.9      4.2      6.0     12.6 write
      7s        0         3565.6         3860.1      2.0      4.7      7.9     25.2 write
      8s        0         3469.3         3811.4      2.0      5.0      6.8     22.0 write
      9s        0         3937.6         3825.4      1.8      3.7      7.3     29.4 write
     10s        0         3822.9         3825.1      1.8      4.7      8.9     37.7 write
...

    After the specified duration (1 minute in this case), the workload will stop and you'll see totals printed to standard output:

    _elapsed___errors_____ops(total)___ops/sec(cum)__avg(ms)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)__result
   60.0s        0         276067         4601.0      1.7      1.6      3.1      5.2     96.5

Load the intro dataset

  1. Load the dataset:

    icon/buttons/copy 
    $ cockroach workload init intro \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Launch the built-in SQL client to view it:

    icon/buttons/copy 
    $ cockroach sql --insecure
    icon/buttons/copy 
    > SHOW TABLES FROM intro;

      table_name
+------------+
  mytable
(1 row)
    icon/buttons/copy 
    $ SELECT * FROM intro.mytable WHERE (l % 2) = 0;

      l  |                          v
+----+------------------------------------------------------+
   0 | !__aaawwmqmqmwwwaas,,_        .__aaawwwmqmqmwwaaa,,
   2 | !"VT?!"""^~~^"""??T$Wmqaa,_auqmWBT?!"""^~~^^""??YV^
   4 | !                    "?##mW##?"-
   6 | !  C O N G R A T S  _am#Z??A#ma,           Y
   8 | !                 _ummY"    "9#ma,       A
  10 | !                vm#Z(        )Xmms    Y
  12 | !              .j####mmm#####mm#m##6.
  14 | !   W O W !    jmm###mm######m#mmm##6
  16 | !             ]#me*Xm#m#mm##m#m##SX##c
  18 | !             dm#||+*$##m#mm#m#Svvn##m
  20 | !            :mmE=|+||S##m##m#1nvnnX##;     A
  22 | !            :m#h+|+++=Xmm#m#1nvnnvdmm;     M
  24 | ! Y           $#m>+|+|||##m#1nvnnnnmm#      A
  26 | !  O          ]##z+|+|+|3#mEnnnnvnd##f      Z
  28 | !   U  D       4##c|+|+|]m#kvnvnno##P       E
  30 | !       I       4#ma+|++]mmhvnnvq##P`       !
  32 | !        D I     ?$#q%+|dmmmvnnm##!
  34 | !           T     -4##wu#mm#pw##7'
  36 | !                   -?$##m####Y'
  38 | !             !!       "Y##Y"-
  40 | !
(21 rows)

Load the startrek dataset

  1. Load the dataset:

    icon/buttons/copy 
    $ cockroach workload init startrek \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Launch the built-in SQL client to view it:

    icon/buttons/copy 
    $ cockroach sql --insecure
    icon/buttons/copy 
    > SHOW TABLES FROM startrek;

      table_name
+------------+
  episodes
  quotes
(2 rows)
    icon/buttons/copy 
    > SELECT * FROM startrek.episodes WHERE stardate > 5500;

      id | season | num |               title               | stardate
+----+--------+-----+-----------------------------------+----------+
  60 |      3 |   5 | Is There in Truth No Beauty?      |   5630.7
  62 |      3 |   7 | Day of the Dove                   |   5630.3
  64 |      3 |   9 | The Tholian Web                   |   5693.2
  65 |      3 |  10 | Plato's Stepchildren              |   5784.2
  66 |      3 |  11 | Wink of an Eye                    |   5710.5
  69 |      3 |  14 | Whom Gods Destroy                 |   5718.3
  70 |      3 |  15 | Let That Be Your Last Battlefield |   5730.2
  73 |      3 |  18 | The Lights of Zetar               |   5725.3
  74 |      3 |  19 | Requiem for Methuselah            |   5843.7
  75 |      3 |  20 | The Way to Eden                   |   5832.3
  76 |      3 |  21 | The Cloud Minders                 |   5818.4
  77 |      3 |  22 | The Savage Curtain                |   5906.4
  78 |      3 |  23 | All Our Yesterdays                |   5943.7
  79 |      3 |  24 | Turnabout Intruder                |   5928.5
(14 rows)

Load the movr dataset

  1. Load the dataset:

    icon/buttons/copy 
    $ cockroach workload init movr \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Launch the built-in SQL client to view it:

    icon/buttons/copy 
    $ cockroach sql --insecure
    icon/buttons/copy 
    > SHOW TABLES FROM movr;

            table_name
+----------------------------+
promo_codes
rides
user_promo_codes
users
vehicle_location_histories
vehicles
(6 rows)
    icon/buttons/copy 
    > SELECT * FROM movr.users WHERE city='new york';

                   id                  |   city   |       name       |           address           | credit_card
+--------------------------------------+----------+------------------+-----------------------------+-------------+
00000000-0000-4000-8000-000000000000 | new york | Robert Murphy    | 99176 Anderson Mills        | 8885705228
051eb851-eb85-4ec0-8000-000000000001 | new york | James Hamilton   | 73488 Sydney Ports Suite 57 | 8340905892
0a3d70a3-d70a-4d80-8000-000000000002 | new york | Judy White       | 18580 Rosario Ville Apt. 61 | 2597958636
0f5c28f5-c28f-4c00-8000-000000000003 | new york | Devin Jordan     | 81127 Angela Ferry Apt. 8   | 5614075234
147ae147-ae14-4b00-8000-000000000004 | new york | Catherine Nelson | 1149 Lee Alley              | 0792553487
(5 rows)

Run the movr workload

  1. Load the initial schema:

    icon/buttons/copy 
    $ cockroach workload init movr \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Initialize and run the workload for 1 minute:

    icon/buttons/copy 
    $ cockroach workload run movr \
--duration=1m \
'postgresql://root@localhost:26257?sslmode=disable'

    You'll see per-operation statistics print to standard output every second:

    _elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
    1.0s        0           31.9           32.0      0.5      0.6      1.4      1.4 addUser
    1.0s        0            6.0            6.0      1.2      1.4      1.4      1.4 addVehicle
    1.0s        0           10.0           10.0      2.2      6.3      6.3      6.3 applyPromoCode
    1.0s        0            2.0            2.0      0.5      0.6      0.6      0.6 createPromoCode
    1.0s        0            9.0            9.0      0.9      1.6      1.6      1.6 endRide
    1.0s        0         1407.5         1407.8      0.3      0.5      0.7      4.1 readVehicles
    1.0s        0           27.0           27.0      2.1      3.1      4.7      4.7 startRide
    1.0s        0           86.8           86.9      4.7      8.4     11.5     15.2 updateActiveRides
    2.0s        0           26.0           29.0      0.5      1.1      1.4      1.4 addUser
    2.0s        0            8.0            7.0      1.2      2.8      2.8      2.8 addVehicle
    2.0s        0            2.0            6.0      2.6      2.8      2.8      2.8 applyPromoCode
    2.0s        0            0.0            1.0      0.0      0.0      0.0      0.0 createPromoCode
    2.0s        0            6.0            7.5      0.8      1.7      1.7      1.7 endRide
    2.0s        0         1450.4         1429.1      0.3      0.6      0.9      2.6 readVehicles
    2.0s        0           17.0           22.0      2.1      3.3      5.5      5.5 startRide
    2.0s        0           59.0           72.9      6.3     11.5     11.5     14.2 updateActiveRides
...

    After the specified duration (1 minute in this case), the workload will stop and you'll see totals printed to standard output:

    _elapsed___errors_____ops(total)___ops/sec(cum)__avg(ms)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)__result
   60.0s        0          85297         1421.6      0.7      0.3      2.6      7.1     30.4

Run the tpcc workload

  1. Load the initial schema and data:

    icon/buttons/copy 
    $ cockroach workload init tpcc \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Run the workload for 10 minutes:

    icon/buttons/copy 
    $ cockroach workload run tpcc \
--duration=10m \
'postgresql://root@localhost:26257?sslmode=disable'

    You'll see per-operation statistics print to standard output every second:

    _elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
      1s        0         1443.4         1494.8      4.7      9.4     27.3     67.1 transfer
      2s        0         1686.5         1590.9      4.7      8.1     15.2     28.3 transfer
      3s        0         1735.7         1639.0      4.7      7.3     11.5     28.3 transfer
      4s        0         1542.6         1614.9      5.0      8.9     12.1     21.0 transfer
      5s        0         1695.9         1631.1      4.7      7.3     11.5     22.0 transfer
      6s        0         1569.2         1620.8      5.0      8.4     11.5     15.7 transfer
      7s        0         1614.6         1619.9      4.7      8.1     12.1     16.8 transfer
      8s        0         1344.4         1585.6      5.8     10.0     15.2     31.5 transfer
      9s        0         1351.9         1559.5      5.8     10.0     16.8     54.5 transfer
     10s        0         1514.8         1555.0      5.2      8.1     12.1     16.8 transfer
...

    After the specified duration (10 minutes in this case), the workload will stop and you'll see totals printed to standard output:

    _elapsed___errors_____ops(total)___ops/sec(cum)__avg(ms)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)__result
  600.0s        0         823902         1373.2      5.8      5.5     10.0     15.2    209.7

Run the ycsb workload

  1. Load the initial schema and data:

    icon/buttons/copy 
    $ cockroach workload init ycsb \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Run the workload for 10 minutes:

    icon/buttons/copy 
    $ cockroach workload run ycsb \
--duration=10m \
'postgresql://root@localhost:26257?sslmode=disable'

    You'll see per-operation statistics print to standard output every second:

    _elapsed___errors__ops/sec(inst)___ops/sec(cum)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)
      1s        0         9258.1         9666.6      0.7      1.3      2.0      8.9 read
      1s        0          470.1          490.9      1.7      2.9      4.1      5.0 update
      2s        0        10244.6         9955.6      0.7      1.2      2.0      6.6 read
      2s        0          559.0          525.0      1.6      3.1      6.0      7.3 update
      3s        0         9870.8         9927.4      0.7      1.4      2.4     10.0 read
      3s        0          500.0          516.6      1.6      4.2      7.9     15.2 update
      4s        0         9847.2         9907.3      0.7      1.4      2.4     23.1 read
      4s        0          506.8          514.2      1.6      3.7      7.6     17.8 update
      5s        0        10084.4         9942.6      0.7      1.3      2.1      7.1 read
      5s        0          537.2          518.8      1.5      3.5     10.0     15.2 update
...

    After the specified duration (10 minutes in this case), the workload will stop and you'll see totals printed to standard output:

    _elapsed___errors_____ops(total)___ops/sec(cum)__avg(ms)__p50(ms)__p95(ms)__p99(ms)_pMax(ms)__result
  600.0s        0        4728286         7880.2      1.0      0.9      2.2      5.2    268.4

Customize the frequency and format of per-operation statistics

To customize the frequency of per-operation statistics, use the --display-every flag, with ns, us, ms, s, m, and h as valid time units. To customize the format of per-operation statistics, use the --display-format flag, with incremental-json or simple (default) as options.

  1. Load the initial schema and data:

    icon/buttons/copy 
    $ cockroach workload init ycsb \
'postgresql://root@localhost:26257?sslmode=disable'

  2. Run the workload for 1 minute, printing the output every 5 seconds as JSON:

    icon/buttons/copy 
    $ cockroach workload run ycsb \
--duration=1m \
--display-every=5s \
--display-format=incremental-json \
'postgresql://root@localhost:26257?sslmode=disable'

    {"time":"2019-09-13T03:25:03.950621Z","errs":0,"avgt":8434.5,"avgl":8471.0,"p50l":0.8,"p95l":1.6,"p99l":3.1,"maxl":19.9,"type":"read"}
{"time":"2019-09-13T03:25:03.950621Z","errs":0,"avgt":438.1,"avgl":440.0,"p50l":1.5,"p95l":2.8,"p99l":4.5,"maxl":14.7,"type":"update"}
{"time":"2019-09-13T03:25:08.95061Z","errs":0,"avgt":7610.6,"avgl":8040.8,"p50l":0.8,"p95l":2.0,"p99l":4.2,"maxl":65.0,"type":"read"}
{"time":"2019-09-13T03:25:08.95061Z","errs":0,"avgt":391.8,"avgl":415.9,"p50l":1.6,"p95l":3.5,"p99l":5.8,"maxl":21.0,"type":"update"}
{"time":"2019-09-13T03:25:13.950727Z","errs":0,"avgt":7242.0,"avgl":7774.5,"p50l":0.8,"p95l":2.2,"p99l":4.7,"maxl":75.5,"type":"read"}
{"time":"2019-09-13T03:25:13.950727Z","errs":0,"avgt":382.0,"avgl":404.6,"p50l":1.6,"p95l":4.7,"p99l":10.5,"maxl":24.1,"type":"update"}
...

    When using incremental-json, note that totals are not printed at the end of the workload's duration.

See also


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