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CONFIG_FUSION_MAX_SGE: Maximum number of scatter gather entries (16 - 128)

General informations

The Linux kernel configuration item CONFIG_FUSION_MAX_SGE has multiple definitions:

Maximum number of scatter gather entries (16 - 128) found in drivers/message/fusion/Kconfig

The configuration item CONFIG_FUSION_MAX_SGE:

Help text

This option allows you to specify the maximum number of scatter- gather entries per I/O. The driver default is 128, which matches SCSI_MAX_PHYS_SEGMENTS. However, it may decreased down to 16. Decreasing this parameter will reduce memory requirements on a per controller instance.

Maximum number of scatter gather entries found in drivers/message/fusion/Kconfig

The configuration item CONFIG_FUSION_MAX_SGE:

Help text

This option allows you to specify the maximum number of scatter- gather entries per I/O. The driver defaults to 40, a reasonable number for most systems. However, the user may increase this up to 128. Increasing this parameter will require significantly more memory on a per controller instance. Increasing the parameter is not necessary (or recommended) unless the user will be running large I/O's via the raw interface.

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