sparc m12-2s zfs MEMORY 320GB KERNEL PARAMETER

sparc m12-2s zfs MEMORY 320GB KERNEL PARAMETER

 

 

 

[PDF] Datasheet Fujitsu SPARC M12-2S Server

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[PDF] SPARC M12-2/M12-2S サービスマニュアル - device.report

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SPARC M12-2 - Oracle | Hardware | 제품안내 | System Associates

 

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답변

The Fujitsu SPARC M12-2S server supports a maximum memory configuration of up to 3 TB using 64 GB DDR4 DIMMs14. To configure 320 GB of memory, you would need to use a combination of available DIMM sizes (16 GB, 32 GB, or 64 GB)4.

For optimal performance with ZFS, it's recommended to adjust the ZFS Adaptive Replacement Cache (ARC) size. You can set this kernel parameter in the /etc/system file:

 

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set zfs:zfs_arc_max=171798691840

This sets the maximum ARC size to approximately 160 GB (half of the 320 GB total memory)6. The value is in bytes, so 171798691840 represents 160 GB.

Additionally, for better system performance, you may want to consider the following kernel parameters:

 

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set autoup=86400 set doiflush=0 set dopageflush=0

These settings optimize the system's page flushing behavior and file system metadata syncs6.

Remember to reboot the system after making changes to the /etc/system file for the new parameters to take effect.