Q: Shared Memory vs. Ramdisk?

[Byron Stanoszek]

Hi all,

I have an application on x86-64 that will require me sharing two memory
segments upwards of 10+ GB each among several processes. Would it be better
performance-wise to mmap in two files from a tmpfs filesystem, or, create two
large ramdisks (/dev/ram0 & /dev/ram1) and mmap those in?

I'm not concerned about swap, but rather just trying to avoid as much kernel
overhead as possible while accessing gobs of memory.

Thanks,
 -Byron

--
Byron Stanoszek                         Ph: (330) 644-3059
Systems Programmer                      Fax: (330) 644-8110
Commercial Timesharing Inc.             Email: byron@xxxxxxxxxxx
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