mc support perf drive

The mc support perf drive command measures the read/write speed of the drives in a cluster.

Use this command to identify potential drive performance bottlenecks in your deployment.

Syntax

Example Syntax

The command has the following syntax:

mc [GLOBALFLAGS] support perf drive  \
                 ALIAS               \
                 [--concurrent]      \
                 [--verbose, -v]     \
                 [--filesize]        \
                 [--blocksize]       \
                 [--serial]          \
                 [--airgap]

Brackets [] indicate optional parameters.
Parameters sharing a line are mutually dependent.
Parameters separated using the pipe | operator are mutually exclusive.

Copy the example to a text editor and modify as needed before running the command in the terminal/shell.

Parameters

ALIAS

Required

The alias of the AIStor deployment.

--airgap

Optional

Use in environments without network access to SUBNET (for example, airgapped, firewalled, or similar configuration).

If the deployment is airgapped, but the local device where you are using the AIStor Client has network access, you do not need to use the --airgap flag.

--blocksize

Optional

Specify the read/write block size.

If not specified, the default value is 4MiB.

Use --blocksize <value> where <value> is a number and a storage unit, using standard storage unit abbreviations.

--concurrent

Optional

Specify the number of concurrent requests to test per server.

If not specified, the default value is 32.

Use --concurrent <value> where <value> is a number.

--filesize

Optional

Specify the total size of data to read or write to each drive.

If not specified, the default value is 1GiB.

Use --filesize <value> where <value> is a number and storage unit, KiB, MiB, or GiB.

--serial

Optional

Run performance tests on drive(s) one by one.

--verbose, -v

Optional

Show per-server stats in the output.

Global flags

This command supports any of the global flags.

Examples

Test speed of all drives on all nodes with default specifications

Run drive read/write performance measurements on all drives on all nodes for a cluster with alias myaistor. The command does not specify the blocksize, so the default of 4MiB is used.

mc support perf drive myaistor

Test drive speed measurements with custom specifications

Run drive read/write performance measurements on a cluster with alias myaistor specifying a blocksize of 64KiB and data read/written from each drive of 2GiB.

mc support perf drive myaistor --blocksize 64KiB --filesize 2GiB