Container Service for Kubernetes:Performance testing for strmvol volumes

Comparison of data reading performance of strmvol volumes with different resourceLimit parameters

In this test, the node specification is ecs.g7nex.32xlarge, the operating system is Alibaba Cloud Linux 3, and the region is cn-beijing.

• In this example, the random read scenario for small files (100 KB image files) is used and the direct mode is enabled.

  Different resourceLimit settings affect only the performance upper limit. When the concurrency does not reach the upper limit, the performance is similar.

  Note

  The notes in the following table record the concurrency at which performance reaches the upper limit for different resourceLimit configurations. For operating systems other than Alibaba Cloud Linux 3, volumes with different resourceLimit parameters reach the read performance upper limit when performing 64 concurrent read operations.

  Test scenario	4 concurrent reads	8 concurrent reads	16 concurrent reads	32 concurrent reads	64 concurrent reads	128 concurrent reads	256 concurrent reads	512 concurrent reads	1024 concurrent reads
  Performance	11.53 MB/s 101.06 img/s	21.99 MB/s 192.62 img/s	48.01 MB/s 417.95 img/s	93.90 MB/s 817.45 img/s	180.88 MB/s 1577.12 img/s	312.82 MB/s 2727.48 img/s	513.54 MB/s 4475.20 img/s	974.47 MB/s 8491.96 img/s	1306.61 MB/s 11386.33 img/s
  Note	None	None	None	None	Upper limit of performance for non-Alibaba Cloud Linux 3 systems	2C4G mode performance upper limit	4C8G mode performance upper limit	8C16G mode performance upper limit	16C32G mode performance upper limit

• In this example, scenarios involving the sequential reading of large files in a single stream and sequential reading of small files (100 KB image files) are used and the direct mode is disabled.

  Resource limit	MB/s for sequential loading of 256 concurrent requests	MB/s for single-stream reading of large files
  2c4g	349.89 MB/s 2742.05 img/s	216
  4c8g	789.52 MB/s 6187.34 img/s	342
  8c16g	1446.17 MB/s 11333.37 img/s	548
  16c32g	2383.38 MB/s 18678.12 img/s	926

  Note

  The preset value ensures optimal performance for all data operations in general read-only scenarios.

  In the single-stream large file reading scenario, the 8c16g mode achieves a throughput of 2.5 to 2.7 GB/s. If your business has specific data reading characteristics, you can submit a ticket to request assistance.

Comparison of data reading performance across different solutions

In this test, the node specification is ecs.g8i.2xlarge, the operating system is Alibaba Cloud Linux 3, and the region is cn-beijing.

Test scenario:

• Use default configurations for ossfs. Direct read is enabled (memory pool is limited to 1 GB by default).

• The resource limits for strmvol are 2c4g and 4c8g.

• The direct mode is enabled only in scenarios where small files (128 KB text files) are randomly loaded.