On 04/16/2015 06:22 AM, Mel Gorman wrote: > The patch "mm: Send a single IPI to TLB flush multiple pages when unmapping" > would batch 32 pages before sending an IPI. This patch increases the size of > the data structure to hold a pages worth of PFNs before sending an IPI. This > is a trade-off between memory usage and reducing IPIS sent. In the ideal > case where multiple processes are reading large mapped files, this patch > reduces interrupts/second from roughly 180K per second to 60K per second. > > Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>