Bug #102505 hw_memory in kBytes instead of in bytes on Linux

• Submitted: 6 Feb 2021 18:23
• Modified: 17 Feb 2021 17:39
• Reporter: Mikael Ronström
• Status: Closed
• Category: MySQL Cluster: Cluster (NDB) storage engine
• Severity: S3 (Non-critical)
• Version: 8.0.23
• OS: Ubuntu
• CPU Architecture: Any

[6 Feb 2021 18:23] Mikael Ronström

Description:
The NdbHW.cpp calculates the available memory on Linux
using /proc/meminfo. /proc/meminfo reports memory size
in kBytes, however NdbHW.cpp wants the memory size in
bytes.

How to repeat:
Read code

Suggested fix:
Multiply hw_memory_size on Linux by 1024.

[7 Feb 2021 6:47] MySQL Verification Team

Hello Mikael,

Thank you for the report and feedback.

Sincerely,
Umesh

[17 Feb 2021 17:39] Jon Stephens

Documented fix as follows in the NDB 8.0.24 changelog:

    On Linux systems, NDB interpreted memory sizes obtained from
    /proc/meminfo as being supplied in bytes rather than in 
    kilobytes.

Closed.

Tack för hjälpen!