| arc.c (321562) | arc.c (321563) |
|---|---|
| 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 6325 unchanged lines hidden (view full) --- 6334 cv_init(&arc_reclaim_waiters_cv, NULL, CV_DEFAULT, NULL); 6335 6336 mutex_init(&arc_dnlc_evicts_lock, NULL, MUTEX_DEFAULT, NULL); 6337 cv_init(&arc_dnlc_evicts_cv, NULL, CV_DEFAULT, NULL); 6338 6339 /* Convert seconds to clock ticks */ 6340 arc_min_prefetch_lifespan = 1 * hz; 6341 | 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 6325 unchanged lines hidden (view full) --- 6334 cv_init(&arc_reclaim_waiters_cv, NULL, CV_DEFAULT, NULL); 6335 6336 mutex_init(&arc_dnlc_evicts_lock, NULL, MUTEX_DEFAULT, NULL); 6337 cv_init(&arc_dnlc_evicts_cv, NULL, CV_DEFAULT, NULL); 6338 6339 /* Convert seconds to clock ticks */ 6340 arc_min_prefetch_lifespan = 1 * hz; 6341 |
| 6342 /* Start out with 1/8 of all memory */ 6343 arc_c = allmem / 8; 6344 6345#ifdef illumos 6346#ifdef _KERNEL 6347 /* 6348 * On architectures where the physical memory can be larger 6349 * than the addressable space (intel in 32-bit mode), we may 6350 * need to limit the cache to 1/8 of VM size. 6351 */ 6352 arc_c = MIN(arc_c, vmem_size(heap_arena, VMEM_ALLOC | VMEM_FREE) / 8); 6353#endif 6354#endif /* illumos */ | |
| 6355 /* set min cache to 1/32 of all memory, or arc_abs_min, whichever is more */ 6356 arc_c_min = MAX(allmem / 32, arc_abs_min); 6357 /* set max to 5/8 of all memory, or all but 1GB, whichever is more */ 6358 if (allmem >= 1 << 30) 6359 arc_c_max = allmem - (1 << 30); 6360 else 6361 arc_c_max = arc_c_min; 6362 arc_c_max = MAX(allmem * 5 / 8, arc_c_max); --- 23 unchanged lines hidden (view full) --- 6386 6387 arc_c = arc_c_max; 6388 arc_p = (arc_c >> 1); 6389 arc_size = 0; 6390 6391 /* limit meta-data to 1/4 of the arc capacity */ 6392 arc_meta_limit = arc_c_max / 4; 6393 | 6342 /* set min cache to 1/32 of all memory, or arc_abs_min, whichever is more */ 6343 arc_c_min = MAX(allmem / 32, arc_abs_min); 6344 /* set max to 5/8 of all memory, or all but 1GB, whichever is more */ 6345 if (allmem >= 1 << 30) 6346 arc_c_max = allmem - (1 << 30); 6347 else 6348 arc_c_max = arc_c_min; 6349 arc_c_max = MAX(allmem * 5 / 8, arc_c_max); --- 23 unchanged lines hidden (view full) --- 6373 6374 arc_c = arc_c_max; 6375 arc_p = (arc_c >> 1); 6376 arc_size = 0; 6377 6378 /* limit meta-data to 1/4 of the arc capacity */ 6379 arc_meta_limit = arc_c_max / 4; 6380 |
| 6381#ifdef _KERNEL 6382 /* 6383 * Metadata is stored in the kernel's heap. Don't let us 6384 * use more than half the heap for the ARC. 6385 */ 6386 arc_meta_limit = MIN(arc_meta_limit, 6387 vmem_size(heap_arena, VMEM_ALLOC | VMEM_FREE) / 2); 6388#endif 6389 |
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| 6394 /* Allow the tunable to override if it is reasonable */ 6395 if (zfs_arc_meta_limit > 0 && zfs_arc_meta_limit <= arc_c_max) 6396 arc_meta_limit = zfs_arc_meta_limit; 6397 6398 if (arc_c_min < arc_meta_limit / 2 && zfs_arc_min == 0) 6399 arc_c_min = arc_meta_limit / 2; 6400 6401 if (zfs_arc_meta_min > 0) { --- 1335 unchanged lines hidden --- | 6390 /* Allow the tunable to override if it is reasonable */ 6391 if (zfs_arc_meta_limit > 0 && zfs_arc_meta_limit <= arc_c_max) 6392 arc_meta_limit = zfs_arc_meta_limit; 6393 6394 if (arc_c_min < arc_meta_limit / 2 && zfs_arc_min == 0) 6395 arc_c_min = arc_meta_limit / 2; 6396 6397 if (zfs_arc_meta_min > 0) { --- 1335 unchanged lines hidden --- |