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QuoteRef: bonwJ6_1994




Topic:
initialization of data
Group:
memory management
Topic:
object-oriented objects
Topic:
memory management by free list
Group:
debugging
Topic:
heap memory management
Topic:
memory cache
Topic:
logging data and events
Topic:
security by audit trail

Reference

Bonwick, J., "The slab allocator: an object-caching kernel memory allocator", USENIX - Summer 1994 Technical Conference, June 1994. Google

Notes

Used by memcached

Quotations
abstract ;;Quote: the SunOS slab memory allocator retains the state of complex objects between uses; object-coloring for global cache utilization; space efficient and fast
87 ;;Quote: object cache is up to 5x faster; preserves the invariant portion of an object's initial state
89 ;;Quote: the slab allocator manages policy and memory while clients manage the object's name, size, alignment, and constructors
90 ;;Quote: the slab allocator has independent caches with per-cache locking, statistics, and no shared state
90 ;;Quote: the slab allocator allocates non-cached objects from 30 slabs of 8 bytes to 9K; larger requests allocated by the back-end page supplier
91 ;;Quote: a slab is one or more pages of contiguous memory divided into equal size chunks; reference count of allocated chucks
91 ;;Quote: the slab allocator is both fast and space-efficient; half the fragmentation of its nearest competitor; constant-time allocate and free
92 ;;Quote: for small to mid-size buffers, slab data, freelist links, and buffers on a single page
92+;;Quote: easier debugging if freelist links at the end of a buffer
92 ;;Quote: unlink the slab instead of unlinking each buffer; freed slabs may be returned to the system; keeps a 15-second working set of recently-used slabs
93 ;;Quote: for cache utilization and bus balance, each slab allocates buffers at slightly different offsets
96 ;;Quote: the slab allocator assists debugging with auditing, verfication, redzone checking, page-per-buffer mode, and leak detection
96 ;;Quote: in audit mode, the slab allocator records activity in a circular log; identifies owners of corrupted blocks

Related Topics up

Topic: initialization of data (45 items)
Group: memory management   (11 topics, 367 quotes)
Topic: object-oriented objects (39 items)
Topic: memory management by free list (25 items)
Group: debugging   (10 topics, 333 quotes)
Topic: heap memory management (33 items)
Topic: memory cache (29 items)
Topic: logging data and events (17 items)
Topic: security by audit trail (18 items)

Collected barberCB 3/08
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