Maxim Dounin afb4aafc6e Core: slab allocator free pages defragmentation.
Large allocations from a slab pool result in free page blocks being fragmented,
eventually leading to a situation when no further allocation larger than a page
size are possible from the pool.  While this isn't a problem for nginx itself,
it is known to be bad for various 3rd party modules.  Fix is to merge adjacent
blocks of free pages in the ngx_slab_free_pages() function.

Prodded by Wandenberg Peixoto and Yichun Zhang.
2014-06-03 17:53:03 +04:00
2014-06-02 16:16:22 +04:00
2013-12-06 19:58:27 +04:00
2014-05-27 17:58:08 +04:00
2014-05-27 17:58:09 +04:00
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