-nomap: Difference between revisions

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[[OFP Command line switch]] -nomap forces OFP to avoid memory mapping for file access. While memory mapping is very efficient from performance point of view, it can quickly fill all available virtual space, causing various memory allocation errors or even driver crashes or freezes.
[[OFP Command line switch]] -nomap forces OFP to avoid memory mapping for file access. While memory mapping is very efficient from performance point of view, it can quickly fill all available virtual space, causing various memory allocation errors or even driver crashes or freezes.


This switch is especialy important for users with display adapters with large ammounts of VRAM (128MB or more), which reserve a lot of virtual address in the application address space for themselves.
This switch is especialy important for users with display adapters with large amounts of VRAM (128MB or more), which reserve a lot of virtual addresses in the application address space for themselves.

Revision as of 09:42, 15 April 2006


OFP Command line switch -nomap forces OFP to avoid memory mapping for file access. While memory mapping is very efficient from performance point of view, it can quickly fill all available virtual space, causing various memory allocation errors or even driver crashes or freezes.

This switch is especialy important for users with display adapters with large amounts of VRAM (128MB or more), which reserve a lot of virtual addresses in the application address space for themselves.