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> 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 > work? Perhaps you are thinking of something like IO-Lite? Has anyone in the linux world ever implemented IO-Lite? Sure would be interesting to have essentially zero-copy file operations.. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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