On 01/22/2014 04:23 PM, Raghavendra K T wrote:
max_sane_readahead returns zero on the cpu having no local memory node. Fix that by returning a sanitized number of pages viz., minimum of (requested pages, 4k) Result: fadvise experiment with FADV_WILLNEED on a x240 machine with 1GB testfile 32GB* 4G RAM numa machine ( 12 iterations) yielded Kernel Avg Stddev base 7.2963 1.10 % patched 7.2972 1.18 % Reviewed-by: Jan Kara <jack@xxxxxxx> Signed-off-by: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx> ---
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