copy_from_user() overhead

Murali Ravirala (
Fri, 28 Sep 2001 01:57:40 -0500 (CDT)


We are interested in finding out the overhead in kernel->user buffer copy and
vice-versa for disk reads and network writes resp. in copy_from_user() and
copy_to_user() calls. Are there any quantitative data available for this? We
plan to eliminate this overhead, if significant, in our integrated disk-read and
network-write architecture. Any pointers/references related to this type of


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