Lines Matching refs:scan

471 memory node local to where the task is running.  Every "scan delay" the task
472 scans the next "scan size" number of pages in its address space. When the
475 In combination, the "scan delay" and "scan size" determine the scan rate.
476 When "scan delay" decreases, the scan rate increases.  The scan delay and
477 hence the scan rate of every task is adaptive and depends on historical
478 behaviour. If pages are properly placed then the scan delay increases,
479 otherwise the scan delay decreases.  The "scan size" is not adaptive but
480 the higher the "scan size", the higher the scan rate.
482 Higher scan rates incur higher system overhead as page faults must be
483 trapped and potentially data must be migrated. However, the higher the scan
486 memory accesses. These sysctls control the thresholds for scan delays and
490 scan a tasks virtual memory. It effectively controls the maximum scanning
493 numa_balancing_scan_delay_ms is the starting "scan delay" used for a task
497 scan a tasks virtual memory. It effectively controls the minimum scanning
501 scanned for a given scan.