osfmk/vm/vm_pageout.c

147 #ifndef VM_PAGEOUT_BURST_ACTIVE_THROTTLE   /* maximum iterations of the active queue to move pages to inactive */
151 #ifndef VM_PAGEOUT_BURST_INACTIVE_THROTTLE  /* maximum iterations of the inactive queue w/o stealing/cleaning a page */
160 #define VM_PAGEOUT_INACTIVE_RELIEF 50	/* minimum number of pages to move to the inactive q */
209  *	To obtain a reasonable LRU approximation, the inactive queue
212  *	of active+inactive pages that should be inactive.
261  *	When we dequeue pages from the inactive list, they are
592 		if (!m->active && !m->inactive && !m->throttled && !m->private) {
869 	assert(!m->inactive && !m->active);
1270 	 *	Calculate the max number of referenced pages on the inactive
1282 	 *	to the inactive queue.  If we let the inactive queue get
1285 	 *	before we start taking them from the inactive queue.
1352 		 * Move pages from active to inactive if we're below the target
1354 		/* if we are trying to make clean, we need to make sure we actually have inactive - mj */
1384 			assert(m->active && !m->inactive);
1397 			 * we'll see a clean, non-referenced page when it eventually gets pulled out of the inactive queue
1448 		 * and the inactive queue
1494 				 * inactive target still not met... keep going
1671 		 *	1) No inactive pages - nothing to do.
1672 		 *	2) Loop control - no acceptable pages found on the inactive queue
1859 				 * we don't have any inactive pages other then
1939 			 * Try a clean-queue inactive page.
2064 			 * object are fairly typical on the inactive and active queues
2381 			 * The page we pulled off the inactive list has
2385 			 * inactive queue, so we limit the number of
2459 		 * to the end of the inactive queue
2495 				 *  c) Most of the pages in the inactive queue belong to this file.
2499 				 *  b) we're done with the active queue and moved on to the inactive queue
2504 				 * in an effort to cause a page from the active queue to 'age' to the inactive queue
2513 				 * that we can try to find clean pages in the active/inactive queues before
4827 			if ( (refmod_state & VM_MEM_REFERENCED) && dst_page->inactive ) {
4829 				 * page is on inactive list and referenced...
6434 							m->inactive = TRUE;
6612 		} else if (should_be_throttled == TRUE && !m->active && !m->inactive && !m->speculative && !m->throttled) {
6626 			} else if (!m->active && !m->inactive && !m->speculative) {
7127 							 * implementing an LRU on the inactive q
7131 						} else if (!m->active && !m->inactive && !m->speculative)